JPH04238384A - Electronic music playback device with practice function - Google Patents

Abstract

PURPOSE:To offer the electronic music reproducing device through which a singer can know whether he or she is singing a song correctly and makes a suitably practice of singing by detecting the intervals of performance and a voice or time deviation and outputting a singing voice at a correct interval and timing which are stored when deviation is generated. CONSTITUTION:When a music selection command is inputted from an operation part 2, an input/output control part 1 outputs the singing voice of the singer from a singing voice output control part 12 to a speaker 10 if the song sung by the singer deviates after a performance control part 7 starts the performance. Then the singing voice of the singer is outputted unless the song sung by the singer deviates or after the deviation is corrected.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music reproducing apparatus for business or home use having performance data for playing music and singing voice data for outputting singing voices on a recording medium.

0002

2. Description of the Related Art Electronic music reproducing devices, especially karaoke devices, mix reproduced musical tone information and singer's voice information input from a microphone and output the mixture from a speaker. Even if the pitch, speed, etc. were different from the reproduced music, the singer could not tell which part matched with the electronic music performance and which part differed from the electronic music performance.

0003

[Problems to be Solved by the Invention] As described above, conventional electronic music playback devices do not have a function to specify even if the played performance sound and the singer's voice are out of sync. People who sing don't know if they are singing correctly or well. The present invention solves the above-mentioned problems by detecting the pitch or time difference between the performance and the voice, and outputting the singing voice at the correct pitch and timing when the discrepancy occurs. To provide an electronic music reproducing device which allows a singer to know whether or not he or she is singing correctly and is suitable for practicing singing.

0004

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a storage section that stores performance data, singing voice data, and lyrics timing data for singing support, and an audio input that inputs the singer's voice. an electronic music playback device that outputs both the playback sound of performance data and the audio data input from the audio input unit, the performance data stored in the storage unit and the audio data input from the audio input unit. The apparatus includes a detecting means for detecting a time or pitch deviation from the audio data, and a singing voice output means for outputting the singing voice data when the detecting means detects the deviation.

[0005]

[Operation] According to the above structure, the detection means compares the performance data stored in the storage section and the singer's voice data inputted from the voice input section, and detects a time or pitch deviation between them. When this deviation is detected, the singing voice output means outputs the singing voice data at the correct pitch and timing recorded in the storage section.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electronic music reproducing apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 shows the overall configuration of an electronic music playback device according to this embodiment. The input/output control unit 1 is in charge of overall control of the electronic music playback device, and is
It has built-in PU22, RAM23, ROM24, etc. This input/output control section 1 has a function as a detection means of the present invention for detecting a discrepancy between performance data and audio data, as will be described later.

The following devices are connected to this input/output control section 1. The operation section 2 is made up of operation keys, etc., and is used to select a desired performance piece and input the information to the input/output control section 1, and the storage section 3 is a storage medium that stores at least musical tone information. As shown in the figure, the storage unit 3 stores performance data B, lyric timing data C, singing voice data D, and lyric sentences E in correspondence with the song title A. This performance data B is, for example, a MIDI (Musical
Instrument Digital Int
erface) standard, and its information consists of at least the scale, sound intensity, sound length, and timbre. Further, this storage section 3 stores background video data F in addition to musical tone information. This background video data F has no correspondence with the song title A and will be described later on the display section 5.
On the other hand, the performance data B is output asynchronously and allows endless video output.

The video control section 4 inputs the background video data F stored in the storage section 3 via the input/output control section 1, and controls the display of the video F on the display section 5. The lyric sentence output control unit 6 is
The lyric sentence E stored in the storage section 3 is inputted via the input/output control section 1, and display control is performed on the display section 5. The performance control section 7 inputs the performance data B stored in the storage section 6 via the input/output control section 1, and inputs the performance data B stored in the storage section 6 to a synthesizer 8 as a performance device.
Control the performance. The performance control section 7 is capable of adjusting and controlling the reproduction timing and reproduction speed of the performance data, and is also configured to receive lyric timing data C stored in the storage section 3. Singing voice output control section 12
inputs the singing voice data D stored in the storage section 3 via the input/output control section 1 and outputs it to the amplifier 9.

[0009] Furthermore, an amplifier 9 is provided after the synthesizer 8.
is provided to amplify the output of the synthesizer 8 and output it to the speaker 10 at the subsequent stage. Further, a microphone 11 is connected to the amplifier 9 as an audio input means for inputting audio. The amplifier 9 mixes and amplifies the audio information from the microphone 11 and the musical tone information from the synthesizer 8, and outputs the mixed signal to the speaker 10. Furthermore, microphone 1
The audio information from 1 is also input to the input/output control section 1. The audio information input to the input/output control unit 1 is used to detect a time lag between the audio information and the performance data B. Here, if the person singing is out of tune or speed, the input/output control section 1 outputs the singing voice data D from the storage section 3, sends it to the singing voice output control section 12, amplifies the output at the amplifier 9, and outputs the singing voice data D from the storage section 3 to the speaker 10. The singing voice of the singer is output.

Next, the input/output control unit 1 having the function as the detection means of the present invention described above will be explained using FIG. 2. In the figure, a log converter 20 inputs the sound pressure level signal of the audio information from the microphone 11 and log-compresses it. A differentiating circuit 21 inputting the output of this log converter 20 differentiates the log compressed signal to generate a PCM having a pulse-like waveform at the sound pressure change point.
Output as data. Note that this PCM data is output as a pulse having a certain width on the time axis in order to enable cross-correlation to be described later. The log converter 20 converts the input signal into a corresponding compressed signal by referring to a table according to the root mean square value of the PCM data of the input signal, and the differentiator 21 converts each digital signal by using a high-pass filter or the like. This can be realized using a signal processing processor (DSP) or the like.

[0011] A CPU that inputs the output of the differentiating circuit 21.
Reference numeral 22 analyzes the time lag between audio information and music information. This CPU 22 has a first memory 2 and a second memory 2.
3 and 24 are connected to each other. first memory 23
functions as a working memory, and first stores the output from the differentiating circuit 21 via the CPU 22. On the other hand, the second memory 24 stores reference data for the CPU 22 to perform cross-correlation. This reference data is created by passing exemplary data indicating the strength and weakness of the song through a log converter 20 and a differentiation circuit 21, and is recorded as information on the time axis. As this reference data, it is preferable that it is a characteristic part of the strength and weakness of the song, and it is not necessarily necessary for each measure, but every two measures,
Alternatively, only feature points can be stored as reference data.

Next, the operation of this embodiment will be explained. When a music selection command is input to the operation unit 2, the input/output control unit 1
searches for the selected song title A among the data inside the storage unit 3, and reads out performance data B, lyric timing data C, singing voice data D, and lyric sentence E data corresponding to the searched song title. . Furthermore, the background video data E is displayed on the display section 5 via the readout video control section 4 regardless of the song title A. Of the data read out from the storage section 3, the lyric sentence E is inputted to the lyric output control section 6 via the input/output control section 1, and is displayed on the display section 5 while being superimposed on the background image.

On the other hand, the performance data B and lyrics timing data C are outputted to the performance control section 7 via the input/output control section 1. The performance control unit 7 is in charge of overall control of the music reproduction device based on the lyric timing data C, and controls the output timing of the lyric sentence E, and outputs the performance data B to the synthesizer 8. The sound signal generated by the synthesizer 8 is output to the speaker 10 via the amplifier 9, and is reproduced and output as a musical performance. The singing voice data D is output to the singing voice output control section 12 via the input/output control section 1. In this singing voice output control section 12, based on the pitch or time difference information between the performance and the voice,
Singing voice data D is output to amplifier 9. The singer's voice is input to the amplifier 9 as audio information via the microphone 11,
This audio information is mixed with performance information by an amplifier 9 and output from a speaker 10. For some singers, the pitch may be off, or the speed of the performance and the speed of the singing may become mismatched, resulting in a significant difference between the performance and the voice. When the input/output control section 1 detects this deviation, it controls the singing voice output control section 12 to output the singing voice data D to the amplifier 9. As a result, the singing voice data D is output from the speaker 10.

FIG. 3 is a flowchart of the above-mentioned operation, which will be explained below. The input/output control section 1 includes an operation section 2
When a song selection command is input from (step 1, hereinafter referred to as S1), the performance control section 7 starts playing (S2), and when the singer's song is out of alignment (YES at S3), the singing voice output control section 1
2 outputs the singer's singing voice to the speaker 10 (S4). Then, when the singer's singing is not misaligned or when the misalignment has been corrected (NO in S3), the singer's singing voice is output (S5).

It should be noted that the present invention is not limited to the embodiments described in detail above, and various changes can be made without departing from the spirit thereof. For example, when detecting a pitch or time difference between a performance and a voice, it is preferable to store characteristic reference data in advance, but the method is not limited to this method.
It is also possible to use the feature points of the performance data B stored in the storage section 3 as reference data.

[0016]

[Effects of the Invention] As described above, according to the present invention, the pitch or time difference between the performance and the voice is detected, and when the discrepancy occurs, the singing voice is output at the correct pitch and timing recorded. By doing so, the singer can know whether he or she is singing correctly and can practice singing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an electronic music playback device according to an embodiment of the present invention.

FIG. 2 is a block configuration diagram of an input/output control section of the apparatus.

FIG. 3 is a flowchart showing the operation of this device.

[Explanation of symbols]

1 Input/output control section 3. Storage section 7 Performance control section 8 Synthesizer 9 Amplifier 10 Speaker 11. Microphone 12 Singing voice output control section

Claims (1)

[Claims] 1. A storage unit that stores performance data, singing voice data, and lyrics timing data for song support, and an audio input unit that inputs the singer's voice, and includes a reproduction sound of the performance data and the audio input unit. In an electronic music playback device that also outputs audio data input from the storage unit, a detection unit detects a time or pitch deviation between the performance data stored in the storage unit and the audio data input from the audio input unit. and singing voice output means for outputting the singing voice data when a deviation is detected by the detection means.