JP5040356B2 - Automatic performance device, playback system, distribution system, and program - Google Patents

Description

  The present invention relates to a technique for performing an automatic performance based on music data conforming to a standard such as MIDI (Musical Instrument Digital Interface) in synchronization with reproduction of audio data.

As a means for reproducing music, there is an apparatus that reads out audio data representing a sound waveform from a storage medium such as a compact disk and emits the sound. As another music playback means, there is an apparatus that reads music data in MIDI format (hereinafter referred to as MIDI data) from a storage medium such as a flexible disk, and drives a sound source according to the MIDI data to perform an automatic performance. is there. Recently, a combination of these music playback modes, that is, audio data stored in a storage medium such as a compact disk is read and played back, and further stored in a storage medium such as a flexible disk in synchronization with the playback. A technique of reading out MIDI data and performing an automatic performance has been proposed (see, for example, Patent Document 1).
JP 2003-271138 A

  The present invention has been made in view of such a background, and an object thereof is to provide a new mechanism for reproducing audio data and music data in synchronization.

In order to solve the above-described problems, an automatic performance device according to the present invention is specified by an audio identifier acquisition unit that acquires audio identifiers that specify audio data including performance sounds of a plurality of music pieces, and the acquired audio identifier. And a plurality of music data identifiers indicating storage positions of distribution devices in which music data for playing each of the music is stored, corresponding to the reproduction schedule of the performance sounds of the plurality of music included in the audio data. A plurality of pieces of music data are obtained from each of the storage positions indicated by a plurality of pieces of music data identifiers included in the obtained reproduction schedule information and reproduction schedule information acquisition means for acquiring the attached reproduction schedule information Music data acquisition means for storing music data acquired by the music data acquisition means From the music data acquisition means for acquiring the music data not stored in the memory means, and from the playback device that outputs the audio signal representing the playback sound of the audio data together with the elapsed time information from the start of playback, the audio signal and the progress Audio signal acquisition means for acquiring time information, and output of reproduction sound based on the audio signal acquired by the audio signal acquisition means, and acquisition of elapsed time information and reproduction schedule information acquired by the audio signal acquisition means Control means for outputting performance sounds based on the plurality of music data in synchronization with reproduction based on the audio signal in accordance with the reproduction schedule included in the reproduction schedule information acquired by the means. .

The automatic performance device according to the present invention includes an audio identifier acquisition unit that acquires an audio identifier that specifies audio data including performance sounds of a plurality of music pieces, and the audio data specified by the acquired audio identifier. Reproduction schedule information in which a reproduction schedule of performance sounds of the plurality of music pieces and a plurality of music data identifiers indicating storage positions of distribution devices in which music data for playing the music pieces are stored are associated with each other and reproduction schedule information acquiring means for acquiring, met music data acquiring means acquires a plurality of the music data from the storage position of each indicated by a plurality of the music data identifier included in the acquired reproduction schedule information Stored in the storage means for storing the music data acquired by the music data acquisition means. A music data acquisition means for acquiring music data have, from the reproducing apparatus for reproducing the audio data, and the elapsed time information acquiring means for acquiring elapsed time information from the reproduction start of the audio data, by the elapsed time information acquiring means According to the acquired elapsed time information and the reproduction schedule included in the reproduction schedule information acquired by the reproduction schedule information acquisition means, the performance sound based on the plurality of music data is output in synchronization with the reproduction of the audio data. And a control means.

  Preferably, the control means performs mute reproduction without outputting a reproduction sound based on the audio signal acquired by the audio signal acquisition means over a period in which a performance sound based on the music data is output. On the other hand, the playback sound may be output based on the audio signal acquired by the audio signal acquisition means over a period other than the period in which the performance sound based on the music data is output.

  Preferably, the audio identifier acquisition means sets a set of a data name given to the audio data and at least one of a data size of the audio data and a creation date and time of the audio data as the audio identifier. It is good to acquire from the apparatus which memorize | stores the said audio data. In addition, the audio identifier acquisition means uses, as the audio identifier, a set of a data name given to the audio data and at least one of the data size of the audio data or the creation date of the audio data as the audio identifier. You may acquire using either of the several channels which comprise the audio signal supplied from the apparatus which reproduces | regenerates audio data.

Preferably, the plurality of music data identifiers included in the reproduction schedule information are divided into a first group in which music data reuse is permitted and a second group in which music data reuse is not allowed. are, before Symbol control means, the said music data specified by the music data identifier belonging to the first group to output the performance sound is read out from the storage means, even the music data after the output of the performance sound Is stored in the storage means, while the music data specified by the music data identifier belonging to the second group is read from the storage means and a performance sound is output, and after the performance sound is output, The music data may be deleted from the storage means. In this case, it is preferable that the music data specified by the music data identifier belonging to the second group is not permitted to be reused by copyright. The storage means for storing the music data specified by the music data identifier belonging to the first group is a non-volatile storage means and specified by the music data identifier belonging to the second group. The storage means for storing the music data is preferably a volatile storage means.

  Preferably, the apparatus further comprises storage means for storing music data acquired by the music data acquisition means, wherein the music data acquisition means is included in the reproduction schedule information acquired by the reproduction schedule information acquisition means. Of the music data specified by the identifier, music data that is not stored in the storage means may be acquired.

The playback system according to the present invention is a playback system including a playback device and an automatic performance device, and the playback device stores the audio data from storage means for storing audio data including performance sounds of a plurality of music pieces. And a notification means for notifying the automatic performance device of an audio identifier for specifying the audio data, and the automatic performance device acquires the audio identifier notified from the reproduction device. An audio identifier acquisition means, a reproduction schedule of performance sounds of the plurality of songs included in the audio data specified by the acquired audio identifier, and song data for playing each of the songs are stored. preparative reproduction schedule information and music data identifier indicating the storage location of the distribution apparatus associated And reproduction schedule information acquisition means for, in a music data acquisition means for acquiring the music data from the storage position of each indicated by the music data identifier included in the acquired reproduction schedule information, the music data acquisition The music data acquisition means for acquiring the music data not stored in the storage means for storing the music data acquired by the means, and the reproduction of the audio data according to the reproduction schedule included in the acquired reproduction schedule information Control means for outputting a performance sound based on the music data.

  Preferably, the playback means of the playback device outputs an audio signal representing a playback sound of the audio data to the automatic performance device together with elapsed time information from the start of playback, and the automatic performance device is configured to output the playback device. Audio signal acquisition means for acquiring the audio data and the elapsed time information output from the controller, and the control means of the automatic performance device outputs a playback sound based on the audio signal acquired by the audio signal acquisition means In addition, the performance sound based on the music data may be output in synchronization with the reproduction based on the audio signal according to the elapsed time information acquired by the audio signal acquisition means and the reproduction schedule included in the reproduction schedule information.

  Preferably, the control means of the automatic performance device outputs a reproduction sound based on the audio signal acquired by the audio signal acquisition means over a period in which the performance sound based on the music data is output. While the mute reproduction is not performed, the reproduction sound may be output based on the audio signal acquired by the audio signal acquisition means over a period other than the period in which the performance sound based on the music data is output.

The distribution system according to the present invention is a distribution system including a playback device, an automatic performance device, and a distribution device, wherein the distribution device stores audio data including performance sounds of a plurality of music pieces. Storage means; second storage means for storing music data for playing the plurality of music pieces included in the audio data; and reproduction schedules of performance sounds of the plurality of music pieces included in the audio data, respectively Third storage means for storing reproduction schedule information associated with a plurality of music data identifiers specifying music data for playing the music, and audio data stored in the first storage means Is distributed to the playback device, and the music data stored in the third storage means and the reproduction schedule information stored in the third storage means are displayed in the automatic performance. Distribution means for delivering to the device, wherein the playback device stores audio data storage means for storing the audio data delivered from the delivery device, and playback means for reading out and playing back the audio data from the audio data storage means And notification means for notifying the automatic performance device of an audio identifier for specifying the audio data, wherein the automatic performance device is configured to acquire the audio identifier notified from the playback device; Reproduction schedule information acquisition means for acquiring reproduction schedule information including a reproduction schedule of performance sounds of the plurality of music pieces included in the audio data specified by the audio identifier, by distribution from the distribution device, and According to the music data identifier included in the reproduction schedule information Acquires music a data acquisition unit, the music data not stored in the storage means for storing music data obtained by the music data acquisition means for acquiring the distribution from the distribution device the music data specified Te Music data acquisition means for performing, and control means for outputting a performance sound based on the music data in synchronization with reproduction of the audio data in accordance with a reproduction schedule included in the acquired reproduction schedule information To do.

  Preferably, the distribution device determines in advance a user of the reproduction device or the automatic performance device in accordance with distributing the music data to the reproduction device or distributing the music data to the automatic performance device. It is preferable to include a billing means for performing processing for billing the given consideration.

  Preferably, the first distribution device including first storage means for storing the audio data and the second distribution device including second storage means for storing the music data are separate devices. Good.

Further, the program according to the present invention causes the computer to acquire audio identifiers for acquiring audio identifiers that specify audio data including performance sounds of a plurality of music pieces, and to the audio data specified by the acquired audio identifiers. A reproduction schedule in which a reproduction schedule of performance sounds of the plurality of music pieces included is associated with a plurality of music data identifiers indicating storage positions of distribution devices in which music data for playing the music pieces is stored. and reproduction schedule information obtaining means for obtaining information, by the music data acquisition means for acquiring a plurality of the music data from the storage position of each indicated by a plurality of the music data identifier included in the acquired reproduction schedule information A storage means for storing the music data acquired by the music data acquisition means A music data acquisition means for acquiring the music data not stored, the reproduction apparatus outputs along with the elapsed time information of an audio signal representing a reproduced sound of the audio data from the reproduction start, the audio signal and the elapsed time information An audio signal acquisition unit to acquire, and a reproduction sound is output based on the audio signal acquired by the audio signal acquisition unit, and the elapsed time information acquired by the audio signal acquisition unit and the reproduction schedule information acquisition unit In accordance with the playback schedule included in the playback schedule information, the program is made to function as control means for outputting performance sounds based on the plurality of music data in synchronization with playback based on the audio signal .

Further, the program according to the present invention causes the computer to acquire audio identifiers for acquiring audio identifiers that specify audio data including performance sounds of a plurality of music pieces, and to the audio data specified by the acquired audio identifiers. A reproduction schedule in which a reproduction schedule of performance sounds of the plurality of music pieces included is associated with a plurality of music data identifiers indicating storage positions of distribution devices in which music data for playing the music pieces is stored. and reproduction schedule information obtaining means for obtaining information, by the music data acquisition means for acquiring a plurality of the music data from the storage position of each indicated by a plurality of the music data identifier included in the acquired reproduction schedule information A storage means for storing the music data acquired by the music data acquisition means A music data acquisition means for acquiring the music data not stored, the reproducing apparatus for reproducing the audio data, and the elapsed time information acquiring means for acquiring elapsed time information from the reproduction start of the audio data, the elapsed time information According to the elapsed time information acquired by the acquisition means and the reproduction schedule included in the reproduction schedule information acquired by the reproduction schedule information acquisition means, the performance sound based on the plurality of music data in synchronization with the reproduction of the audio data Is a program for functioning as control means for outputting.

  According to the present invention, based on a reproduction schedule of performance sounds of a plurality of musical pieces included in audio data and a plurality of musical piece data for performing each of the musical pieces, reproduction and synchronization of audio data are performed according to the reproduction schedule. Thus, a performance based on the music data can be performed.

(1) Configuration of Embodiment FIG. 1 is a diagram illustrating an overall configuration of a music distribution system 100 according to the present embodiment.
The music distribution system 100 includes an audio reproduction device 10, an automatic performance device 20, and a data distribution device 30. The audio reproduction device 10 is a device that reproduces audio data and outputs a voice or an audio signal, and is a personal computer, for example. The automatic performance device 20 is a device that performs automatic performance based on MIDI data that is music data compliant with the MIDI standard, and is, for example, an automatic performance piano. The data distribution device 30 is a device that distributes audio data and MIDI data to the audio playback device 10 and the automatic performance device 20 via a network 40 constituted by various communication networks such as the Internet and a fixed telephone network. (World Wide Web) server device. The audio playback device 10, the automatic performance device 20, and the data distribution device 30 are connected to the network 40 by wire or wireless, respectively. In addition, the audio playback device 10 and the automatic performance device 20 can be connected to each other by wire or wirelessly, and these devices work together to function as a playback system that plays back music. Since audio data and MIDI data are handled as file format data, they are hereinafter referred to as an audio file and a MIDI file. In addition, performing an automatic performance based on a MIDI file is hereinafter referred to as reproducing a MIDI file as necessary.

(1-1) Configuration of Data Distribution Device 30 FIG.
The data distribution device 30 includes a control unit 31, a communication unit 32, and a storage unit 33. The control unit 31 includes, for example, an arithmetic device such as a CPU and various memories such as a ROM and a RAM. The arithmetic device reads out and executes the computer programs stored in these memories and storage units, thereby controlling each unit of the data distribution device 30. The communication unit 32 is connected to the network 40 and communicates with the audio playback device 10 and the automatic performance device 20 under the control of the control unit 31.

  The storage unit 33 is a large-capacity storage unit such as a hard disk. The storage unit 33 stores an audio file group distributed to the audio playback device 10, a MIDI file group distributed to the automatic performance device 20, and audio files and MIDI files to the audio playback device 10 and the automatic performance device 20. In addition to a distribution program in which a procedure for distribution is described, various screen data and the like are stored. Further, a program management table 33a and a program table 33b are stored in this storage unit. In the program management table 33a, information for specifying an audio file to be reproduced in the reproduction system is described. The program table 33b describes information related to the reproduction schedule of the MIDI file that is reproduced in synchronization with the audio file.

(1-2) Data Structure Next, the contents of various data handled in this embodiment will be described.
FIG. 3 is a diagram showing the relationship between an audio file and a MIDI file.
The audio file is data obtained by digitizing a time-series audio waveform sampled based on a predetermined sampling frequency such as 44.1 (kHz). This audio file includes a large number of time codes representing the elapsed time from the beginning of the audio file (that is, the playback start point of the audio file) in addition to the actual data representing the sound waveform.

  The actual data of the audio file includes a music part representing the performance of the music, and a narration part inserted at the beginning of the audio file and between each music. For example, when the audio file shown in FIG. 3 is played back, the music 1 is first described in the first “narration 1”, and then the “music 1” is played back. Then, when the reproduction of “Song 1” is finished, the next “Narration 2” explains the composition 2 and the composition 3, then the “Song 2” is reproduced, and then the “Song 3” is reproduced. Will be. Similarly, “music 4” is reproduced after “narration 3”. Thus, what consists of multiple types of contents, such as a narration and a music, is called a "program" below. That is, as in a television program or a radio program, the entire plurality of contents arranged in time series are expressed as one “program” provided to the user.

  One audio file is associated with a plurality of MIDI files. One of a plurality of corresponding MIDI files is played back in synchronization with the playback of the audio file. In the example of FIG. 3, the MIDI file that is played back in synchronization with the music 1 of the audio file is the MIDI file 1 (music 1) for automatically playing the music 1. Similarly, a MIDI file 2 (song 2) is played back in synchronization with the music file 2 and a MIDI file 3 (song 3) is played back in sync with the music file 3 A MIDI file 4 (song 4) is reproduced in synchronization with the music piece 4 of the audio file.

Here, FIG. 4 is a diagram showing the structure of one MIDI file.
This MIDI file is also called SMF (Standard MIDI File), and is composed of a header chunk and a track chunk as shown in the upper part of FIG. The header chunk includes SMF attribute information such as chunk type. The track chunk includes MIDI data as an entity. As shown in the lower part of the figure, the track chunk includes an event for instructing performance control and the like, and a delta time indicating an occurrence time interval between a preceding event and a subsequent event. The event includes note-on / note-off information indicating that the sound should be generated or muted, note number information indicating the pitch of the sound to be generated, velocity information indicating the strength of the sound.

Next, FIG. 5 is a diagram showing an example of the above-described program management table 33a.
In the program management table 33a, a file identifier for identifying each audio file and a program identifier assigned to a program corresponding to each audio file are described in association with each other. The file identifier is represented by a set of the file name, data size, and creation date / time of the audio file. For example, the data size of the audio file with the file name “piano-fan.wab” is “41.5 (MB)”, and the creation date and time is “2006/1/25”. One audio file is uniquely specified by the set of the file name “piano-fan.wab”, the data size “41.5 (MB)”, and the creation date “2006/1/25”. The program identifier of the program represented by this audio file is “CID001”. The data distribution apparatus 30 searches the program management table 33a using the file identifier of the audio file as a key, and as a result, can identify the corresponding program identifier.

Next, FIG. 6 is a diagram showing the contents of the program table 33b specified by the above-mentioned program identifier “CID001”.
In the program table 33b, a program identifier, a reproduction schedule for reproducing each MIDI file in the program, a URL indicating a position where each MIDI file is stored, and a file name of each MIDI file are associated with each other. is described. The reproduction schedule includes a reproduction start time and a reproduction end time of the MIDI file starting from the reproduction start time of the program (audio file). In the figure, the file name of the MIDI file to be automatically played 1 minute and 16 seconds after the start of the program playback is “piano-fan001.mid”, and its URL is “http://www.abc.co.jp”. /CID001/piano-fan001.mid ".

(1-3) Configuration of Audio Playback Device 10 Next, the configuration of the audio playback device 10 will be described with reference to the block diagram of FIG.
The audio playback device 10 includes a control unit 11, a first communication unit 12, a second communication unit 13, a storage unit 14, an operation unit 15, a display unit 16, and a sound emission unit 17. The control unit 11 includes an arithmetic device such as a CPU and various memories such as a ROM and a RAM. The arithmetic device reads out and executes the computer programs stored in the memory and the storage unit, thereby controlling each unit of the audio reproduction device 10. The first communication unit 12 is connected to the network 40 and communicates with the data distribution device 30 under the control of the control unit 11. The second communication unit 13 is, for example, a USB interface or a wireless communication circuit, and communicates with the automatic performance device 20 via a wired or wireless connection. The operation unit 15 includes a keyboard, a mouse, and the like. The operation unit 15 receives a user operation and supplies a signal corresponding to the operation content to the control unit. The display unit 16 is, for example, a liquid crystal display device, and displays an interactive screen with the user and various types of information based on data provided from the control unit 11.

  The storage unit 14 is a large-capacity storage unit such as a hard disk, and stores an audio file downloaded from the data distribution device 30 in addition to a WWW browser program and an audio playback program. The audio file playback mode includes “single playback” in which the audio playback device 10 plays back the audio file alone and “synchronous playback” in which the audio file is played back in synchronization with the automatic performance by the automatic performance device 20. In the case of independent reproduction, sound based on the audio file is output from the sound emitting unit 17 having a speaker and an amplifier (not shown). On the other hand, in the case of synchronized playback, an audio signal generated based on the audio file is output from the second communication unit 13 to the automatic performance device 20 and is output as sound in the automatic performance device 20.

(1-4) Configuration of Automatic Performance Device 20 Next, the configuration of the automatic performance device 20 will be described with reference to the block diagram of FIG.
The automatic performance device 20 includes a controller 21, a storage unit 22, a first communication unit 23, a second communication unit 24, an operation unit 25, and a performance unit 26. The first communication unit 23 is connected to the network 40 and performs communication via the data distribution device 30 under the control of the controller 21. The second communication unit 24 is, for example, a USB interface or a wireless communication circuit, and communicates with the second communication unit 13 of the audio playback device 10. The controller 21 includes, for example, an arithmetic device such as a CPU and various memories such as a ROM and a RAM. The CPU 21 controls the entire automatic performance device 20 by executing various programs stored in the ROM and the storage unit. The controller 21 includes a timer unit 21a that measures time. The timer unit 21a includes an oscillation circuit (both not shown) including a crystal resonator and an amplifier, and appropriately divides a transmission signal output from the oscillation circuit to generate a timing control clock. The time is measured based on the generated clock.

  The storage unit 22 is a large-capacity storage unit such as a hard disk, for example, and stores a program guide and MIDI file downloaded via the first communication unit 23. The controller 21 reads the MIDI file stored in the storage unit 22 and sequentially supplies the events included in the file to the performance unit 26 at a timing. At this time, the controller 21 always synchronizes the time code supplied from the audio playback device 10 and the elapsed time from the start of playback of the audio file measured by the timer unit 21a. When the controller 21 supplies an event to the performance unit 26 based on the elapsed time specified by the time measuring unit 21a, the controller 21 waits for the time indicated by the delta time subsequent to the event and then waits for the next time. The operation of supplying an event is repeated. Thereby, it is possible to maintain the synchronization between the reproduction of the audio file and the reproduction of the MIDI file.

  The performance unit 26 outputs a performance sound according to the event extracted from the MIDI file, and also outputs a performance sound based on a string according to a key operation by the user. The former is called “automatic performance” and the latter is called “manual performance”. The performance unit 26 includes a drive mechanism 26a, a key sensor 26b, a pedal sensor 26c, a piano electronic circuit 26d, a piano sound source 26e, a mixer 26f, an amplifier 26g, and a speaker 26h. In addition to a plurality of keys and a plurality of pedals, the drive mechanism 26a has a drive solenoid group provided corresponding to each key. The key sensor 26b and the pedal sensor 26c are configured for performing a manual performance, and are provided corresponding to each of a plurality of keys and pedals. The key sensor 26b and the pedal sensor 26c detect the strength and depth when the key and the pedal are pressed, and correspond to the key number or pedal number for identifying the detected key or pedal, velocity information (key pressing strength, etc.) The detection result including the data) is supplied to the piano electronic circuit 26d.

  When performing an automatic performance, the piano electronic circuit 26d receives an event from the controller 21 and supplies the event to the piano sound source 26e. The piano sound source 26e generates an audio signal for outputting a performance sound instructed by the event. The piano electronic circuit 26d performs energization control on the drive solenoid group provided in the drive mechanism 26a according to the event received from the controller 21. Specifically, when the piano electronic circuit 26d receives a note-on (key depression) event for a certain performance sound from the controller 21, the piano electronic circuit 26d sends a drive current to the solenoid corresponding to the key of the performance sound, A magnetic force necessary for pressing is generated by a solenoid. On the other hand, when a note-off (key release) event is received for a certain performance sound, the piano electronic circuit 26d sends a drive current to the solenoid corresponding to the key of the performance sound, and the magnetic force necessary to release the key. Is generated by a solenoid.

  In addition, when performing a manual performance, the piano electronic circuit 26d generates an event based on the detection results supplied from the key sensor 26b and the pedal sensor 26c. For example, an event instructing performance control such as “sound a note (note number) with a strength of 10 (velocity) (note on)” is generated, and the event is supplied to the piano sound source 26e. The piano sound source 26e generates an audio signal for outputting the instructed performance sound according to this event.

  The audio signal generated by the piano sound source 26e as described above is output to the mixer 26f. The mixer 26f mixes the audio signal output from the piano sound source 26e with other audio signals as necessary, and outputs the result to the amplifier 26g. This signal is amplified by the amplifier 26g and output as a performance sound from the speaker 26h.

(2) Operation of Embodiment Next, the operation of the embodiment will be described.
(2-1) Operation until Acquiring Audio File First, the operation until the audio playback device 10 acquires an audio file from the data distribution device 30 will be described with reference to the sequence of FIG.
In FIG. 9, first, the user uses the operation unit 15 of the audio playback device 10 to activate a WWW browser program and perform an operation of designating a predetermined URL. This URL is a URL indicating the storage location of the audio file list screen data stored in the data distribution device 30. The control unit 11 of the audio playback device 10 accepts this operation (step S1), and transmits a request including the URL (HTTP request) from the first communication unit 12 (step S2). On the other hand, the control unit 31 of the data distribution device 30 constantly executes the distribution program described above, and when the communication unit 32 receives the request, it reads out audio file list screen data from the storage unit 33 (step S3). This is transmitted as an HTTP response to the audio playback device 10 (step S4).

  When the list screen data is received by the first communication unit 12, the control unit 11 of the audio playback device 10 interprets this content and displays it on the display unit 16 (step S 5). FIG. 10 shows this display example, and the character strings “1 Piano Fan!”, “2 Piano Check No. 1” and “3 Piano Check No. 2” in the figure are the titles of the respective programs (audio files). The description of the contents of each program is described below the character string. The user can select a desired program with reference to this description. These character strings are associated with URLs indicating the storage locations of the respective audio files by means of HTML (Hyper Text Markup Language) anchor tags. For example, when the user performs an operation of designating a character string “1 piano fan!” And instructing download, the control unit 11 of the audio playback device 10 accepts this operation (step S6) and is associated with the character string. A request (HTTP request) including the received URL is transmitted from the first communication unit 12 (step S7).

When the communication unit 32 of the data distribution device 30 receives this request, the control unit 31 reads an audio file from the storage unit 33 based on the URL (step S8), and uses this as an HTTP response from the communication unit 32 as an audio playback device. 10 (step S9). When receiving the audio file by the first communication unit 12, the control unit 11 of the audio playback device 10 stores the audio file in the storage unit 14 (step S10).
This completes the audio file download.

(2-2) Single Playback Operation by Audio Playback Device 10 Next, single playback of an audio file by the audio playback device 10 will be described.
When the user operates the operation unit 15 of the audio playback device 10 to give an instruction to play an audio file, the control unit 11 of the audio playback device 10 accepts the operation and starts an audio playback program. With reference to the audio file stored in the storage unit 14, a screen as shown in FIG. 11 is displayed on the display unit 16. On this screen, a list of titles of audio files (programs) stored in the storage unit 14 is written, such as “1 Piano Fan!”, “2 Piano Concertos No. 1”, “3 Best Piano”. . On this screen, a soft button labeled “single” is an operator that instructs independent playback, and a soft button labeled “synchronized” is an operator that instructs synchronized playback.

  When the user operates the operation unit 15 to select, for example, “single piano fan!” “Single” with the pointer, the control unit 11 accepts the operation and reads the designated audio file from the storage unit 14. An audio signal is generated and sequentially supplied to the sound emitting unit 17. The sound emission part 17 outputs the reproduction sound according to an audio signal from a speaker. If this “1 piano fan!” Is the audio file shown in FIG. 3, for example, “Narration 1”, “Song 1”, “Narration 2”, “Song 2”, “Song 3”, “Narration” The sound is reproduced in the order of “3” and “Song 4”.

(2-3) Synchronous Playback Operation by Audio Playback Device 10 and Automatic Performance Device 20 Next, an operation in which the audio playback device 10 and the automatic performance device 20 perform synchronous playback will be described with reference to the sequence of FIG.
In FIG. 12, the user connects the audio playback device 10 and the automatic performance device 20 so that they can communicate with each other by wire or wirelessly (step S11). Then, when the user operates the operation unit 15 of the audio reproduction device 10 to give an instruction to reproduce the audio file, the control unit 11 of the audio reproduction device 10 accepts the operation (step S12), and the audio is reproduced. The reproduction program is started and the screen shown in FIG.

  Here, when the user operates the operation unit 15 and designates “synchronization” of, for example, “1 piano fan!”, The control unit 11 accepts the operation, and the file identifier of the designated audio file, that is, the file name “piano”. -fan.wab ", data size" 41.5 (MB) ", and creation date and time" 2006/1/25 "are read from the file management table (FAT) and the automatic performance device 20 is read from the second communication unit 13. (Step S13).

  When receiving the file identifier from the second communication unit 24, the controller 21 of the automatic performance device 20 transmits the file identifier from the first communication unit 23 to the data distribution device 30 (step S14). When the control unit 31 of the data distribution apparatus 30 receives the file identifier by the communication unit 32, the control unit 31 searches the program management table 33a shown in FIG. 5 for a record that matches the file identifier, and describes the record specified by the search. The designated program identifier “CID001” is specified (step S15). Then, the control unit 31 reads the program table 33b (see FIG. 6) corresponding to the program identifier “CID001” from the storage unit 33 (step S16), and transmits it from the communication unit 32 to the automatic performance device 20 (step S17). .

  When the controller 21 of the automatic performance device 20 receives the program table 33b by the first communication unit 23, the MIDI file of the file name is stored in the storage unit 33 using the file name described in the program table 33b as a key. It is determined whether it has been performed (step S18). Here, “piano-fan001.mid”, “piano-fan002.mid”, “piano-fan003.mid”, “piano-fan004.mid” among the file names described in FIG. -fan001.mid "and" piano-fan004.mid "are not stored in the storage unit 33. In this case, the controller 21 issues a request (HTTP request) including a URL (http://www.abc.co.jp/midi/piano-fan001.mid) corresponding to the file name “piano-fan001.mid”. 1 is transmitted from the communication unit 23 (step S19). This URL is a URL indicating the storage location of the MIDI file “piano-fan001.mid” stored in the data distribution apparatus 30.

  When the control unit 31 of the data distribution device 30 receives the request through the communication unit 32, the control unit 31 reads the MIDI file “piano-fan001.mid” from the storage unit 33 with reference to the URL, and uses the MIDI file “piano-fan001.mid” as an HTTP response. (Step S20). Similarly, the controller 21 of the automatic musical instrument 20 includes a URL (http://www.abc.co.jp/midi/piano-fan004.mid) corresponding to another file name “piano-fan001.mid”. A request (HTTP request) is transmitted to the data distribution device 30. When the communication unit 32 receives the request, the control unit 31 of the data distribution device 30 reads the MIDI file “piano-fan004.mid” from the storage unit 33 and transmits it to the automatic performance device 20 as an HTTP response.

  The controller 21 of the automatic musical instrument 20 receives the MIDI file transmitted as described above by the first communication unit 23 and stores it in the storage unit 22 (step S21). When it is completed, the controller 21 transmits a notification that the download is completed from the second communication unit 24 to the audio playback device 10 (step S22). When the notification is received by the second communication unit 13, the control unit 11 of the audio playback device 10 displays a screen as shown in FIG. 13 on the display unit 16. When the user instructs to perform playback by operating the operation unit 15, the control unit 11 accepts this operation, and transmits a playback start notification from the second communication unit 13 to the automatic performance device 20 (step S23). The controller 21 of the automatic performance device 20 receives this reproduction start notification through the second communication unit 24.

  Thereafter, both the audio playback device 10 and the automatic performance device 20 shift to synchronous playback processing. (Steps S24 and S25). That is, the control unit 11 of the audio playback device 10 reads an audio file from the storage unit 14, generates an audio signal based on the read audio file, and generates the audio signal together with the time code via the second communication unit 13. Are sequentially supplied (step S26). On the other hand, the controller 21 of the automatic performance device 20 executes processing according to the flowchart shown in FIG.

  In FIG. 14, the controller 21 indicates the elapsed time from the reception of the audio file reproduction start notification from the audio reproduction device 10 as the reproduction start time of the MIDI file described in the program table 33b (here, “1” in FIG. 6). It is determined whether or not it has reached "16 minutes" (step S101). Until the playback start time is reached (step S101; No), the controller 21 supplies the audio signal received by the second communication unit 24 to the mixer 26f (step S102). The mixer 26f outputs the audio signal supplied from the controller 21 to the amplifier 26g, and the amplifier 26g amplifies it and outputs it as a reproduced sound from the speaker 26h. The processes in steps S101 and S102 are repeated until the MIDI file playback start time is reached. As a result, for example, “Narration 1” of the audio file shown in FIG.

  When the elapsed time from the start of playback of the audio file reaches 1 minute 16 seconds, the controller 21 determines that the playback start time has been reached (step S101; Yes), and receives the audio signal received by the second communication unit 24. The so-called mute reproduction is performed without supplying to the mixer 26f. At the same time, the controller 21 reads the MIDI file “piano-fan001.mid” whose playback start time has arrived in the program table 33b from the storage unit 22, extracts events from the file, and sequentially supplies them to the piano electronic circuit 26d. (Step S103). The piano electronic circuit 26d transfers this event to the piano sound source 26e, and the piano sound source 26e generates an audio signal that represents the sound instructed by the event with the performance sound of the piano. This audio signal is output to the mixer 26f, and the mixer 26f outputs it to the amplifier 26g. The amplifier 26g amplifies it and outputs it as a performance sound from the speaker 26h. At this time, the piano electronic circuit 26d supplies a drive signal to the drive mechanism based on the event supplied from the controller 21, and causes the keys and pedals to be driven by the drive mechanism to perform automatic performance. May be.

  The processing in step S103 is repeated over a period up to the reproduction end time described in the program table 33b (here, “5 minutes 48 seconds” in FIG. 6) (step S104; No). As described above, the reproduction sound of “Song 1” based on the audio file is not emitted, but instead, the performance sound of “Song 1” is emitted from the speaker 26 h of the automatic performance device 20. That is, since the automatic performance of the music 1 starts after the narration 1 of the human voice, the user can enjoy the music performance with a live feeling.

When the reproduction end time described in the program table 33b is reached (step S104; Yes), the process of the controller 21 returns to step S101. Then, the above-described processing is repeated for the MIDI file “piano-fan002.mid” to be reproduced next.
Through the above processing, “Narration 1” is first played, then “Song 1” is automatically played, then “Narration 2” is played, then “Song 2” and “ "Song 3" is automatically played sequentially, then "Narration 3" is played, and then "Song 4" is automatically played.

  When the playback of the audio file is completed (step S27 in FIG. 12), the control unit 11 of the audio playback device 10 transmits a playback end notification to that effect from the second communication unit 13 to the automatic performance device 20 (step S28). When the controller 21 of the automatic musical instrument 20 receives the reproduction end notification, the process shown in FIG. 14 is ended (step S29).

  According to the above-described embodiment, a plurality of pieces of music included in the audio file can be automatically played in a state in which the reproduction of the audio file is kept synchronized. Therefore, for the user, while enjoying the reproduction of the audio file, the user can also enjoy the music performance with a live feeling according to the reproduction schedule, and can feel an unprecedented interest.

(3) Modifications The embodiment described above may be modified as follows.
(3-1) Modification 1
In the embodiment, the automatic performance device 20 acquires the file identifier of the audio file from the audio playback device 10, and then acquires the program table 33b from the data distribution device 30 by designating the file identifier. The necessary MIDI file was acquired based on the URL described in Table 33b. According to this method, by referring to the program table 33b, the automatic performance device 20 can first identify all the MIDI files that are the targets of automatic performance, so only the MIDI files that are not stored by itself are downloaded. And no unnecessary download processing occurs.

  On the other hand, when the automatic performance device 20 acquires the file identifier of the audio file from the audio playback device 10, next, the file identifier is designated and the program table 33b and the MIDI file described in the program table 33b are specified. You may make it acquire from the data delivery apparatus 30 at once. That is, when the controller 21 of the automatic performance device 20 receives the file identifier of the audio file from the audio playback device 10 by the second communication unit, the controller 21 transmits the file identifier from the first communication unit 23 to the data distribution device 30. When receiving the file identifier by the communication unit 32, the control unit 31 of the data distribution device 30 searches for a record that matches the file identifier, and specifies the program identifier “CID001” described in the record specified by the search. Then, the control unit 31 reads all the program table 33 b corresponding to the program identifier “CID001” and the MIDI file described in the program table 33 b from the storage unit 33, and transmits it from the communication unit 32 to the automatic performance device 20. . When the controller 21 of the automatic performance device 20 receives the program table 33b and the MIDI file by the first communication unit 23, the controller 21 stores them in the storage unit 22. In this way, it is possible to download the program guide and the MIDI file at once.

(3-2) Modification 2
In the embodiment, one data distribution device 30 stores all of the audio file, the program table 33b, and the MIDI file, and distributes these in response to a request from the audio playback device 10 or the automatic performance device 20. .
On the other hand, the data distribution device 30 that stores the audio file, the program guide 33b, and the MIDI file may be separate devices. FIG. 15 is a diagram illustrating an example of the entire system according to this modification. As shown in the figure, the data distribution device 30a stores an audio file and a program table, and the data distribution device 30b stores some of the plurality of MIDI files described in the program table. The data distribution device 30c stores the remaining MIDI files among the plurality of MIDI files described in the program guide. The user of the audio playback device 10 causes the audio playback device 10 to access the data distribution device 30a, and acquires an audio file and a program guide. In the program guide, URLs of a plurality of MIDI files are respectively described, and the automatic performance device 20 acquires the MIDI files from the data delivery device 30b and the data delivery device 30c based on the URLs described in the program guide. To do. For service providers who provide audio files and MIDI files, it is not easy to prepare all of a huge number of files by themselves. However, as described above, each file is shared by a plurality of service providers. If they are prepared, they can utilize each other's files and provide various music to the user. In particular, since an audio file and a MIDI file have different file creation methods, their data structures, or file usage purposes, it is convenient for each service provider to prepare and provide them separately.

  In the above-mentioned program table, the URL of the MIDI file is described. However, when there is only one data distribution apparatus as in the embodiment, this URL is not necessarily required, and the file name of the MIDI file is not necessarily required. If there is, the location of the MIDI file can be specified. On the other hand, when the MIDI file is distributed and stored in a plurality of data distribution apparatuses, it is convenient that the URL is described in the program guide.

  In addition, a playback system including the audio playback device 10 and the automatic performance device 20 may be configured as one device, or a plurality of devices may have functions separated.

(3-3) Modification 3
Further, as shown in FIG. 15, the data distribution devices 30a, 30b, and 30c are connected to the payment system 50, and the user of the audio playback device 10 or the automatic performance device 20 is charged for the value of the audio file or MIDI file. May be. The payment system 50 is a system including various financial networks and financial institutions such as a JBA (National Bank Association) network 40 and a CAFIS (Credit And Finance Information System) network (not shown). The data distribution apparatuses 30a, 30b, and 30c perform a charging process for charging the user of the audio playback apparatus 10 and the automatic performance apparatus 20 for the value of the audio file or the MIDI file, and perform a payment process on the payment system 50. Request. In response to this request, payment processing by the payment system 50 is executed.

The details of this billing process are as follows.
The storage unit 33 of the data distribution apparatus 30 stores an audio file or MIDI file and its price data in association with each other. The storage unit 33 stores information related to the users of the audio playback device 10 and the automatic performance device 20 based on prior notifications from the respective users. The information regarding this user is, for example, name, address, date of birth, user identifier, bank account, credit card number, and the like. When the download of the audio file or the MIDI file is completed, the control unit 31 of the data distribution device 30 specifies the price data associated with the file and specifies the user identifier assigned to the user who acquired the file. To do. Since the price data is stored in the storage unit in association with the file as described above, it is used. The user identifier of the user who has downloaded the file is requested to input the user identifier in the login process when the audio playback device 10 or the automatic performance device 20 accesses the data distribution device 30, and the control unit receives the user identifier. 31 should just memorize | store. And the control part 31 notifies the specified price data to the payment system 50 with a user identifier, a bank account, or a credit card number, and requests payment processing. Up to here is the charging process for the control unit to charge the file price. In response to this notification, the payment system 50 performs a payment process such as withdrawing the notified amount from the notified bank account or withdrawing based on the notified credit card number.

(3-4) Modification 4
In the embodiment, since the MIDI file is downloaded to the automatic performance device 20 and the MIDI file is reproduced and stored in the storage unit 22, the MIDI file can be reused (reproduced a plurality of times). .
On the other hand, each MIDI file may be divided into one that is reproduced in the download format as described above and one that is reproduced in a so-called stream format. Stream playback is a method of buffering the acquired MIDI file in a volatile storage means such as a RAM, and sequentially reading and playing it. After that playback, the MIDI file is erased from the storage means. It is a form. In other words, this is a playback mode that cannot be reused.

  For example, a form in which a MIDI file of a music subject to copyright is reproduced in a stream format, and a MIDI file of a music not subject to copyright is reproduced in a download format. In addition, as described in the third modification, if the price of the MIDI file is charged, when the low price is paid for the MIDI file of the same music piece, the reproduction is performed in the stream format, and the high price is paid. For example, a form of reproduction in a download format is also conceivable.

Download format playback and stream format playback are implemented as follows.
The MIDI file group stored in the storage unit 33 of the data distribution device 30 is divided into a first group in which the reuse of the MIDI file is permitted and a second group in which the reuse of the MIDI file is not permitted. . For example, in a program guide, a MIDI file belonging to a first group is described in association with a flag indicating the first group, and a second file is assigned to a MIDI file belonging to the second group. The meaning flags are described in association with each other.
When acquiring the program guide, the controller 21 of the automatic performance device 20 changes the acquisition and playback mode of the MIDI file according to the type of flag described in the program guide. Specifically, for the MIDI file associated with the flag of the first group, the controller 21 acquires the MIDI file from the data distribution device 30 and stores it in the storage unit 22 immediately after acquiring the program guide. Keep it. Then, when the playback start time described in the program guide arrives, the controller 21 reads the MIDI file from the storage unit 22, and sequentially supplies each event to the piano electronic circuit 26d in synchronization with the playback of the audio file. On the other hand, for the MIDI file associated with the flag of the second group, the controller 21 acquires the MIDI file from the data distribution device 30 when a predetermined period before the reproduction start time indicated in the program guide is reached. Then, the data is temporarily stored in the RAM in the controller 21, sequentially read out in synchronization with the reproduction of the audio file, and supplied to the electronic piano circuit. Then, the controller 21 erases the MIDI file stored in the RAM after the reading or reproduction.
Thereby, the reuse of the MIDI file can be restricted.

(3-5) Modification 5
In the embodiment, the audio playback device 10 and the automatic performance device 20 each have a function of performing communication via the network 40. However, the present invention is not limited to this, and either one has the communication function, and the other has the function. A file may be downloaded via the network 40 using one communication function. For example, when only the audio playback device 10 has a communication function via the network 40, when the automatic performance device 20 tries to acquire a program guide or a MIDI file, the audio playback device 10 requests the automatic performance device 20. Is transmitted by the second communication unit 13 and transferred from the first communication unit 12 to the data distribution device 30. When the first communication unit 12 of the audio playback device 10 receives the program table and MIDI file transmitted in response to the request, the second communication unit 13 transfers them to the automatic performance device 20.

(3-6) Modification 6
The method of synchronizing the reproduction based on the audio file and the automatic performance based on the MIDI file is not limited to that described in the embodiment, and any method may be used. For example, a method as disclosed in Japanese Patent Application Laid-Open No. 2003-271138 or Japanese Patent Application Laid-Open No. 2006-47761 may be used. The former method detects the peak time of the audio signal, generates an event for time management at the peak time, and synchronizes based on the event and the time measurement result by the time measuring means.

The latter method uses one of a plurality of channels constituting an audio signal supplied from the audio playback device 10 to the automatic performance device 20 as a synchronization channel. Specifically, the following method is used. It is. When the audio file is played back, the control unit 11 of the audio playback device 10 generates an LTC in which audio data is included in the channel (L) and time information and a file identifier are included in the channel (R). The LTC is a time code compliant with SMTPE (Society of Motion Picture and Television Engineers) and includes time information and a file identifier. The controller 21 of the automatic performance device 20 synchronizes the reproduction of the audio file and the MIDI file based on the time information included in the LTC and the time measurement result by the time measuring unit 21a.
As described above, when a certain channel of the audio signal is used, a necessary instruction can be given only by transmitting the audio signal from the audio reproduction device 10 to the automatic performance device 20.

(3-7) Modification 7
In the embodiment, a set of a file name, a data size, and a creation date / time is used as the file identifier. However, only one of the data size and the creation date / time may be used. The term “creation date” includes the update date. The file identifier may be any identifier that can identify an audio file, and various identifiers such as a sequentially assigned number can be used.

(3-8) Modification 8
In the embodiment, the reproduction based on the audio file at the time of the synchronous reproduction is the mute reproduction that does not output the sound. However, this is not necessarily the case, and it may be the normal reproduction that outputs the sound. In this case, the reproduction of music by the audio playback device 10 and the automatic performance of music by the automatic performance device 20 are simultaneously output as sounds.

  Further, at the time of synchronous playback, the playback sound based on the audio file is output from the speaker 26h of the automatic performance device 20, but this is not necessarily the case and may be output from the sound emitting unit 17 of the audio playback device 10. The sound may be output from both the speaker 26 h of the automatic performance device 20 and the sound emitting unit 17 of the audio playback device 10. When outputting from the sound emitting unit 17 of the audio playback device 10, the audio playback device 10 does not need to output an audio signal to the automatic performance device 20, but needs to output a time code for synchronized playback with a MIDI file. There is. The controller 21 of the automatic performance device 20 performs automatic performance based on the MIDI file according to the time code, the time measurement result of the time measuring unit 21a, and the reproduction schedule.

(3-9) Modification 9
In the embodiment, the audio file, the program guide, and the MIDI file are downloaded via the network 40. However, at least one of them is not via the network 40, but a compact disc, a flexible disc, an MD, You may make it provide to the audio reproduction apparatus 10 and the automatic performance apparatus 20 with various recording media, such as an audio tape and a record. That is, the audio file, program guide, and MIDI file acquisition form by the audio playback device 10 and the automatic performance device 20 is not limited to the network 40.

(3-10) Modification 10
In the embodiment, when the automatic performance apparatus acquires the program guide, the MIDI file necessary for automatic performance is downloaded immediately. However, the present invention is not limited to this. For example, when a program guide is acquired, playback of an audio file may be started immediately, and during the playback, the MIDI file may be acquired before the playback start time of the first MIDI file. The second and subsequent playback MIDI files only need to be acquired before each playback start time.
Further, the contents of the audio file and the MIDI file are not limited to those illustrated in FIG. 3, and the contents are arbitrary. Narration is not essential in the audio file, and it may be an audio file consisting only of music.

(3-11) Modification 11
In the embodiment, a personal computer is exemplified as the audio playback device 10, but any audio communication device 10 may be used as long as it is equipped with a communication function via the network 40 and a function for exchanging data with the automatic performance device 20. For example, a mobile phone, a PHS (Personal Handyphone System), a PDA (Personal Digital Assistance), a portable music player, or the like may be used. The programs executed by the control unit 11, the control unit 31, and the controller 21 described above are a magnetic tape, a magnetic disk, a flexible disk, an optical recording medium, a magneto-optical recording medium, a compact disk, a DVD (Digital Versatile Disk), a RAM, and the like. It can be provided in a state of being recorded on the recording medium. That is, the present invention can be realized as a program.

It is a block diagram which shows the structure of the delivery system in this embodiment. It is a block diagram which shows the structure of the data delivery apparatus in the embodiment. It is a figure explaining the correspondence of the audio file and MIDI file in the embodiment. It is a figure which shows the structure of the MIDI file in the same embodiment. It is a figure which shows an example of the program management table in the embodiment. It is a figure which shows an example of the program table in the same embodiment. It is a block diagram which shows the structure of the audio reproduction apparatus in the embodiment. It is a block diagram which shows the structure of the automatic performance apparatus in the same embodiment. It is a sequence diagram explaining an operation example in the same embodiment. It is a figure which shows the example of a screen displayed on the audio reproduction apparatus in the embodiment. It is a figure which shows the example of a screen displayed on the audio reproduction apparatus in the embodiment. It is a sequence diagram explaining an operation example in the same embodiment. It is a figure which shows the example of a screen displayed on the audio reproduction apparatus in the embodiment. It is a flowchart explaining operation | movement of the controller of the automatic performance apparatus in the embodiment. It is a block diagram which shows the structure of the delivery system in a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Audio reproduction apparatus, 20 ... Automatic performance apparatus, 30 ... Data distribution apparatus, 21 ... Controller, 22 ... Memory | storage part, 23 ... 1st communication part, 24 ... 2nd communication part, 26 ... Performance part, 26d ... Piano electronic circuit.

Claims (7)

An audio identifier acquisition means for acquiring an audio identifier for specifying audio data including performance sounds of a plurality of music pieces;
A reproduction schedule of performance sounds of the plurality of pieces of music included in the audio data specified by the acquired audio identifier, and a storage position of a distribution device in which music data for playing each of the pieces of music are stored Reproduction schedule information acquisition means for acquiring reproduction schedule information associated with a plurality of music data identifiers shown ;
A acquired the regeneration predetermined music data acquisition means for acquiring a plurality of the music data from the storage position of each indicated by a plurality of the music data identifier included in the information, acquired by the music data acquisition means Music data acquisition means for acquiring music data not stored in the storage means for storing the music data ,
Audio signal acquisition means for acquiring the audio signal and the elapsed time information from a playback device that outputs an audio signal representing the playback sound of the audio data together with the elapsed time information from the start of playback;
The reproduction sound is output based on the audio signal acquired by the audio signal acquisition unit, and is included in the elapsed time information acquired by the audio signal acquisition unit and the reproduction schedule information acquired by the reproduction schedule information acquisition unit. And a control means for outputting performance sounds based on the plurality of music data in synchronization with the playback based on the audio signal in accordance with the playback schedule. An audio identifier acquisition means for acquiring an audio identifier for specifying audio data including performance sounds of a plurality of music pieces;
A reproduction schedule of performance sounds of the plurality of pieces of music included in the audio data specified by the acquired audio identifier, and a storage position of a distribution device in which music data for playing each of the pieces of music are stored Reproduction schedule information acquisition means for acquiring reproduction schedule information associated with a plurality of music data identifiers shown ;
A acquired the regeneration predetermined music data acquisition means for acquiring a plurality of the music data from the storage position of each indicated by a plurality of the music data identifier included in the information, acquired by the music data acquisition means Music data acquisition means for acquiring music data not stored in the storage means for storing the music data ,
Elapsed time information acquisition means for acquiring elapsed time information from the playback start of the audio data from a playback device for playing back the audio data;
According to the elapsed time information acquired by the elapsed time information acquisition means and the playback schedule included in the playback schedule information acquired by the playback schedule information acquisition means, the music data is synchronized with the playback of the audio data. An automatic performance device comprising: a control means for outputting a performance sound based thereon. A plurality of the music data identifier included in the prior Symbol reproduction schedule information includes a first group of re-use of the music data is permitted, which is divided into a second group that is not allowed reuse of the music data,
Before Symbol control means,
The music data specified by the music data identifier belonging to the first group is read from the storage means and a performance sound is output, and the music data is stored in the storage means even after the performance sound is output. While
The music data specified by the music data identifier belonging to the second group is read from the storage means and a performance sound is output, and after the performance sound is output, the music data is deleted from the storage means. The automatic performance device according to claim 1 or 2 . A reproducing system comprising a playback device and the automatic performance device,
The playback device
Reproduction means for reading out and reproducing the audio data from storage means for storing audio data including performance sounds of a plurality of music pieces;
Notification means for notifying the automatic performance device of an audio identifier that identifies the audio data;
The automatic performance device is
Audio identifier acquisition means for acquiring the audio identifier notified from the playback device;
A reproduction schedule of performance sounds of the plurality of pieces of music included in the audio data specified by the acquired audio identifier, and a storage position of a distribution device in which music data for playing each piece of music are stored Reproduction schedule information acquisition means for acquiring reproduction schedule information associated with the music data identifier to be shown ;
A music data acquisition means for acquiring the music data from the storage location indicated by the music data identifier included in the acquired reproduction schedule information each, the music data obtained by the music data acquisition means Music data acquisition means for acquiring music data not stored in the storage means for storing ;
A playback system comprising: control means for outputting a performance sound based on the music data in synchronism with playback of the audio data in accordance with a playback schedule included in the acquired playback schedule information. A distribution system and a distribution device and the playback device and the automatic performance apparatus,
The distribution device includes:
First storage means for storing audio data including performance sounds of a plurality of music pieces;
Second storage means for storing song data for playing the plurality of songs included in the audio data;
A reproduction schedule information in which a reproduction schedule of performance sounds of the plurality of music pieces included in the audio data and a plurality of music data identifiers specifying music data for playing each of the music pieces is associated is stored. Three storage means;
The audio data stored in the first storage means is distributed to the playback device, and the music data stored in the second storage means and the reproduction schedule information stored in the third storage means are received. Distribution means for distributing to the automatic performance device,
The playback device
Audio data storage means for storing the audio data distributed from the distribution device;
Reproduction means for reading out and reproducing the audio data from the audio data storage means;
Notification means for notifying the automatic performance device of an audio identifier that identifies the audio data;
The automatic performance device is
Audio identifier acquisition means for acquiring the audio identifier notified from the playback device;
Reproduction schedule information acquisition means for acquiring reproduction schedule information including a reproduction schedule of performance sounds of the plurality of music pieces included in the audio data specified by the acquired audio identifier by distribution from the distribution device;
Music data acquisition means for acquiring the music data specified by the music data identifier included in the acquired reproduction schedule information by distribution from the distribution device , wherein the music data acquired by the music data acquisition means Music data acquisition means for acquiring music data not stored in the storage means for storing ;
A distribution system comprising: control means for outputting a performance sound based on the music data in synchronization with reproduction of the audio data in accordance with a reproduction schedule included in the acquired reproduction schedule information. The computer,
An audio identifier acquisition means for acquiring an audio identifier for specifying audio data including performance sounds of a plurality of music pieces;
A reproduction schedule of performance sounds of the plurality of pieces of music included in the audio data specified by the acquired audio identifier, and a storage position of a distribution device in which music data for playing each of the pieces of music are stored Reproduction schedule information acquisition means for acquiring reproduction schedule information associated with a plurality of music data identifiers shown ;
A acquired the regeneration predetermined music data acquisition means for acquiring a plurality of the music data from the storage position of each indicated by a plurality of the music data identifier included in the information, acquired by the music data acquisition means Music data acquisition means for acquiring music data not stored in the storage means for storing the music data ,
Audio signal acquisition means for acquiring the audio signal and the elapsed time information from a playback device that outputs an audio signal representing the playback sound of the audio data together with the elapsed time information from the start of playback;
The reproduction sound is output based on the audio signal acquired by the audio signal acquisition unit, and is included in the elapsed time information acquired by the audio signal acquisition unit and the reproduction schedule information acquired by the reproduction schedule information acquisition unit. A program for functioning as control means for outputting performance sounds based on the plurality of music data in synchronization with playback based on the audio signal in accordance with the playback schedule. The computer,
An audio identifier acquisition means for acquiring an audio identifier for specifying audio data including performance sounds of a plurality of music pieces;
A reproduction schedule of performance sounds of the plurality of pieces of music included in the audio data specified by the acquired audio identifier, and a storage position of a distribution device in which music data for playing each of the pieces of music are stored Reproduction schedule information acquisition means for acquiring reproduction schedule information associated with a plurality of music data identifiers shown ;
A acquired the regeneration predetermined music data acquisition means for acquiring a plurality of the music data from the storage position of each indicated by a plurality of the music data identifier included in the information, acquired by the music data acquisition means Music data acquisition means for acquiring music data not stored in the storage means for storing the music data ,
Elapsed time information acquisition means for acquiring elapsed time information from the playback start of the audio data from a playback device for playing back the audio data;
According to the elapsed time information acquired by the elapsed time information acquisition means and the playback schedule included in the playback schedule information acquired by the playback schedule information acquisition means, the music data is synchronized with the playback of the audio data. A program for functioning as a control means for outputting a performance sound based on this.

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