JP7334317B2 - Karaoke switching device - Google Patents

Description

The present disclosure relates to a karaoke switching device capable of receiving audio signals from multiple source devices.

Conventionally, a karaoke switching device capable of receiving audio signals from a karaoke commander, which is one of the source devices, and source devices other than the karaoke commander, such as a personal computer, an optical disc player, or a mobile terminal, has been known (for example, patent References 1 to 3.) .

Here, the karaoke commander has a well-known configuration, and for example, receives and stores a wide variety of music data at any time via a network, and is permanently installed in a karaoke parlor, for example.

Also, the karaoke commander receives from the microphone receiver an audio signal based on the audio collected by the microphone, and superimposes the audio signal received from the microphone receiver on the audio signal based on the music data and sends it out.

The karaoke switching device receives an audio signal sent from the source device selected by the user, performs predetermined processing on the received audio signal, and sends the signal to the amplifier.

Further, the karaoke switching device includes, for example, a selection switch having a push button for each source device, and furthermore, in the input section for receiving the audio signal, the karaoke commander and various source devices other than the karaoke commander have output terminals. Has an outlet to be plugged into. The karaoke switching device enables transmission of an audio signal from one of the plurality of insertion ports to the output section according to which push button the user has pressed.

By the way, currently, source devices such as karaoke commanders transmit audio signals as analog signals. For this reason, the karaoke switching device is also provided with an analog terminal connector in the input section to receive an analog signal as an audio signal.
In recent years, there has been a demand for improved voice quality in karaoke, and karaoke switching devices are required to take some measures.

JP 2019-128410 A JP 2019-191316 A Japanese Patent Application Laid-Open No. 2020-042058

The present disclosure relates to a karaoke switching device, and an object thereof is to improve sound quality in karaoke.

The karaoke switching device of the present disclosure receives an audio signal from one source device selected from a plurality of source devices including a karaoke commander, which is one of the source devices, and source devices other than the karaoke commander. , performs predetermined processing on the received audio signal and sends it to the amplifier. Also, the karaoke switching device switches the source device that receives the audio signal according to a change in the selection of the plurality of source devices.

Also, the karaoke commander receives from the microphone receiver an audio signal based on the audio collected by the microphone, and superimposes the audio signal received from the microphone receiver on the audio signal based on the music data and sends it out.

The karaoke switching device has the following main input section, sub-input section, output section, and bypass input section .
First, the main input section has an HDMI terminal, an optical digital terminal, and a coaxial digital terminal as insertion openings for cable terminals used to receive audio signals from the karaoke commander, and receives audio signals from the karaoke commander. Receive signals ("HDMI" is a registered trademark of "HDM Licensing Administrator, Inc."). Next, the sub-input unit has a receptacle into which a sub-output terminal, which is an output end of an audio signal sent out from another source device, is inserted, and receives an audio signal from the other source device. The output then sends the audio signal towards the amplifier.

In addition, the bypass input section serves as an insertion port for the cable terminal used to receive the audio signal from the microphone receiver without passing through the karaoke commander. a bypass input having a port.

1 is an overall configuration diagram of a karaoke system; FIG. 2 is a configuration diagram showing transmission of audio signals in the karaoke switching device; FIG. FIG. 3 is a configuration diagram showing transmission of an image signal in the karaoke switching device;

Modes for carrying out the present disclosure are described in detail in the following examples.

[Configuration of Example]
A karaoke switching device 1 of an embodiment will be described with reference to FIGS. 1 to 3. FIG.
The karaoke switching device 1, as shown in FIG. 1, is incorporated in, for example, a karaoke system 100 installed in a karaoke parlor, and switches source devices in accordance with user selection (hereinafter referred to as karaoke switching device 1, karaoke The system 100 may be abbreviated as switching device 1 and system 100, respectively.).

Here, the source device is a device that supplies music data to the system 100, and the following karaoke commander 2 is representative. That is, the karaoke commander 2 is installed in a karaoke parlor, receives a wide variety of music data at any time via, for example, a network, and stores it in its own storage device (hereafter, karaoke commander 2 is abbreviated as commander 2). sometimes called.).

In addition to the commander 2, source devices include, for example, a personal computer 3, an optical disk player 4, a portable terminal 5, and the like. Source devices other than the commander 2 can store music data and supply the stored music data, although their original function is not for the purpose of enjoying karaoke.

Therefore, the switching device 1 is provided so as to be connectable not only to the commander 2 but also to the personal computer 3, the optical disk player 4 and the portable terminal 5, and according to the user's selection, music data can be supplied between these four source devices. It switches sources. Note that the mobile terminal 5 can be connected to the switching device 1 via the HDMI converter 6 .

Next, prior to detailed description of the switching device 1, the configuration of the entire system 100 will be described.
The system 100 includes, in addition to the switching device 1, a microphone receiver 7, an amplifier 8, and the commander 2 described above.
First, the microphone receiver 7 receives from the microphone 9 an audio signal synthesized based on the sounds collected by the microphone 9, and the amplifier 8 amplifies the received audio signal and outputs it to the speaker 10. is.

As described above, the commander 2 stores a wide variety of music data in its own storage device, receives audio signals from the microphone receiver 7, and selects music data selected by the user from the remote controller 11 operated by the user. receives a signal indicative of the song played. Then, the commander 2 selects one piece of music data from the stored music data according to the signal received from the remote controller 11, and superimposes an audio signal based on the selected music data on the audio signal received from the microphone receiver 7. do.

Furthermore, the sound emitted from the speaker 10 is given an echo, and the commander 2 superimposes an echo signal for giving an echo to the sound on the sound signal and then sends out the sound signal. That is, the commander 2, for example, synthesizes an echo signal according to the selected music data, superimposes the synthesized echo signal on the audio signal, and then sends out the audio signal. Although the commander 2 sends out the image signal together with the audio signal, the audio signal and the image signal are sent to the switching device 1 through separate cables 14A and 14B, respectively.

The audio signal sent from the commander 2 is sent to the amplifier 8 via the switching device 1 and emitted from the speaker 10 as sound. Also, the image signal sent from the commander 2 is sent to the monitor 15 via the switching device 1 .
The switching device 1 will be described in detail below.

The switching device 1 receives and receives an audio signal from one source device selected from among a plurality of source devices including a commander 2 as one of the source devices and other source devices other than the commander 2. The audio signal is subjected to predetermined processing and sent to the amplifier 8 . Also, the switching device 1 switches the source device that receives the audio signal according to a change in the selection of the plurality of source devices.

More specifically, the switching device 1 receives and receives audio signals from one source device selected by the user among four types of source devices, namely the commander 2, the personal computer 3, the optical disk player 4, and the portable terminal 5. The audio signal is subjected to predetermined processing and sent to the amplifier 8 . In addition, the switching device 1 switches the source device that receives the audio signal in accordance with a change in the user's selection of the four source devices.

The configuration of the switching device 1 will be specifically described below.
The switching device 1 is composed of a board on which various control devices, storage devices, etc. are provided, a press-type selection switch, a connector into which various input/output terminals are inserted, and the like. 17, an output unit 18, a selection unit 19, a switching unit 20, a superimposing unit 21, and the like.

First, the input unit 17 includes a plurality of connectors, and receives audio signals and image signals from the source device, the microphone receiver 7, and the like. The output unit 18 includes a plurality of connectors, and outputs audio signals to the amplifier 8 and image signals to the monitor 15 .

The selection unit 19 includes a plurality of selection switches, and is pressed when a user or the like selects a desired connector from among a plurality of connectors in the input unit 17 and the output unit 18. be. The switching unit 20 enables transmission of signals between the connectors of the input unit 17 and the output unit 18 selected by the selection unit 19 . It switches between which connector of the output unit 18 and which connector of the output unit 18 allows signal transmission.

Furthermore, the superimposing unit 21 superimposes various signals in the switching device 1 mainly when an audio signal is received from a source device other than the commander 2 .
The input section 17, the output section 18, the selection section 19, the switching section 20 and the superimposing section 21 will be described in further detail below.

First, the input section 17 has a main input section 23, a sub-input section 24 and a bypass input section 25 described below.
The main input section 23 is a section that receives audio signals and image signals sent from the commander 2, and has connectors 23A and 23B into which terminals 14At and 14Bt of cables 14A and 14B are inserted.

Here, the main input unit 23 has connectors 23Aa, 23Ab, 23Ac, and 23Ad into which an HDMI terminal, an optical digital terminal, a coaxial digital terminal, and an analog terminal can be inserted, respectively, as the connector 23A. Therefore, the switching device 1 can receive the audio signal from the commander 2 regardless of which of an HDMI cable, an optical digital cable, a coaxial digital cable, or an analog cable is used as the cable 14A.

For example, an HDMI terminal can be inserted into the connector 23B, and the switching device 1 adopts an HDMI cable as the cable 14B and connects it to the commander 2, whereby the image signal from the commander 2 is received. can receive

The sub-input section 24 is a section that receives audio signals and image signals sent out from source devices other than the commander 2 , that is, the personal computer 3 , the optical disk player 4 and the portable terminal 5 .
That is, the sub-input unit 24 has connectors 24A1 and 24B1 into which terminals 27A1t and 27B1t of cables 27A1 and 27B1 for receiving audio signals and image signals sent from the personal computer 3 are inserted.

Similarly, the sub-input unit 24 has connectors 24A2 and 24B2 into which terminals 27A2t and 27B2t of cables 27A2 and 27B2 for receiving audio signals and image signals sent from the optical disk player 4 are inserted. It has connectors 24A3 and 24B3 into which terminals 27A3t and 27B3t of cables 27A3 and 27B3 for receiving audio signals and image signals respectively sent out from are inserted.

Note that the connectors 24A1 to 24A3 can be inserted with, for example, analog terminals. The switching device 1 adopts an analog cable as each of the cables 27A1 to 27A3 to connect to the personal computer 3, the optical disk player 4 or the mobile terminal 5, so that the personal computer 3, the optical disk player 4 or the mobile terminal 5 can be individually connected. can receive audio signals.

Further, the connectors 24B1 to 24B3 are capable of inserting, for example, HDMI terminals. The switching device 1 employs an HDMI cable as each of the cables 27B1 to 27B3 to connect the personal computer 3, the optical disk player 4, or the mobile terminal 5, so that the personal computer 3, the optical disk player 4, or the mobile terminal 5 can be individually connected. can receive image signals.
The audio signal received by the sub-input unit 24 is not superimposed with the audio signal synthesized by the microphone 9 or the echo signal.

The bypass input section 25 is a section that directly receives an audio signal from the microphone receiver 7 without passing through the commander 2, and is a connector into which a terminal 28t of a cable 28 for receiving an audio signal sent from the microphone receiver 7 is inserted. 29.

The bypass input unit 25 has connectors 29a, 29b, 29c, and 29d into which an HDMI terminal, an optical digital terminal, a coaxial digital terminal, and an analog terminal can be inserted. Therefore, the switching device 1 can receive the audio signal from the microphone receiver 7 regardless of which of an HDMI cable, an optical digital cable, a coaxial digital cable, or an analog cable is used as the cable 28 .

The output unit 18 is a portion that outputs an audio signal to the amplifier 8 and an image signal to the monitor 15. A cable 30A for transmitting the audio signal received by the amplifier 8 and the image signal received by the monitor 15, It has connectors 18A and 18B into which terminals 30At and 30Bt of 30B are inserted.

Here, the output unit 18 has connectors 18Aa, 18Ab, 18Ac, and 18Ad into which an HDMI terminal, an optical digital terminal, a coaxial digital terminal, and an analog terminal can be inserted, respectively, as the connector 18A. Therefore, the switching device 1 can send an audio signal to the amplifier 8 regardless of which of an HDMI cable, an optical digital cable, a coaxial digital cable, or an analog cable is used as the cable 30A.

For example, an HDMI terminal can be inserted into the connector 18B, and the switching device 1 adopts an HDMI cable as the cable 30B and connects it to the monitor 15 so that the image signal can be sent to the monitor 15. can be sent out.

The selection unit 19 has a plurality of selection switches and is pressed when the user selects a desired connector from among the plurality of connectors in the input unit 17 and the output unit 18 . Here, the selection switches included in the selection unit 19 are the following first switch 19A, second switch 19B, third switch 19C and fourth switch 19D.

First, the first switch 19A is used when the user selects one of the four types of source equipment, ie, the commander 2, the personal computer 3, the optical disk player 4, and the mobile terminal 5, as the music data supply source. It is something to do. The first switch 19A has four push buttons, for example, and these four push buttons correspond to the commander 2, the personal computer 3, the optical disk player 4, and the portable terminal 5, respectively.

In other words, pushing the first button 19A1 out of the four push buttons corresponds to selecting the connectors 23A and 23B in the main input section 23. FIG. Further, pressing the second button 19A2 corresponds to selecting the connectors 24A1 and 24B1 in the sub-input section 24. FIG. Further, pressing the third button 19A3 corresponds to selecting the connectors 24A2 and 24B2 in the sub-input section 24. FIG. Further, pressing the fourth button 19A4 corresponds to selecting the connectors 24A3 and 24B3 in the sub-input section 24. FIG.

Next, the second switch 19B is used, for example, when an operator who builds the system 100 selects one of HDMI cable, optical digital cable, coaxial digital cable, and analog cable as the cable 14A. It is a thing. Also, the second switch 19B has, for example, four push buttons, and these four push buttons correspond to HDMI cables, optical digital cables, coaxial digital cables, and analog cables, respectively.

In other words, pushing the first button 19B1 out of the four push buttons corresponds to selecting the connector 23Aa in the main input section 23. FIG. Further, pressing the second button 19B2 corresponds to selecting the connector 23Ab in the main input section 23. FIG. Further, pressing the third button 19B3 corresponds to selecting the connector 23Ac in the main input section 23. FIG. Further, pressing the fourth button 19B4 corresponds to selecting the connector 23Ad in the main input section 23. FIG.

Also, the third switch 19C is used, for example, when an operator who builds the system 100 selects one of the HDMI cable, the optical digital cable, the coaxial digital cable, and the analog cable as the cable 30A. is. Also, the third switch 19C has, for example, four push buttons, and these four push buttons correspond to HDMI cables, optical digital cables, coaxial digital cables, and analog cables, respectively.

In other words, pushing the first button 19C1 out of the four push buttons corresponds to selecting the connector 18Aa in the output section 18. FIG. Further, pressing the second button 19C2 corresponds to selecting the connector 18Ab in the output section 18. FIG. Further, pressing the third button 19C3 corresponds to selecting the connector 18Ac in the output section 18. FIG. Further, pressing the fourth button 19C4 corresponds to selecting the connector 18Ad in the output section 18. FIG.

Furthermore, the fourth switch 19D is used, for example, when an operator who builds the system 100 selects one of the HDMI cable, optical digital cable, coaxial digital cable, and analog cable as the cable 28. is. Also, the fourth switch 19D has, for example, four push buttons, and these four push buttons correspond to HDMI cables, optical digital cables, coaxial digital cables, and analog cables, respectively.

In other words, pushing the first button 19D1 out of the four push buttons corresponds to selecting the connector 29a in the bypass input section 25. FIG. Further, pressing the second button 19D2 corresponds to selecting the connector 29b in the bypass input section 25. FIG. Further, pressing the third button 19D3 corresponds to selecting the connector 29c in the bypass input section 25. FIG. Further, pressing the fourth button 19D4 corresponds to selecting the connector 29d in the bypass input section 25. FIG.

The switching unit 20 is mainly concerned with the transmission of audio signals, and enables the transmission of audio signals from any connector in the input unit 17 to any connector in the output unit 18 according to selection by the user or the like in the selection unit 19. It is the one that decides. The switching unit 20 has electronic switches that switch connections in accordance with the state of pressing of each of the first to fourth switches 19A to 19D. These switches are provided on a substrate, for example. there is

Hereinafter, in the switching section 20, the switching switch corresponding to the first switch 19A may be referred to as the first switching section 20A. Similarly, changeover switches corresponding to the second, third, and fourth switches 19B, 19C, and 19D may be called second, third, and fourth switching units 20B, 20C, and 20D, respectively.

First, the first switching unit 20A determines which of the four types of connectors, ie, the connector 23A of the main input unit 23 and the connectors 24A1, 24A2, and 24A3 of the sub-input unit 24, from which the audio signal can be transmitted to the output unit 18. Also, it is determined from which of the four types of connectors 23B of the main input section 23 and the connectors 24B1, 24B2 and 24B3 of the sub-input section 24 the image signal can be transmitted to the output section 18. FIG.

That is, the first switching unit 20A can transmit the audio signal and the image signal received from any of the four types of source devices, namely the commander 2, the personal computer 3, the optical disc player 4, and the portable terminal 5, to the output unit 18. Decide whether to

Specifically, the first switching unit 20A is connected to a second switching unit 20B described later and individual superimposing units 21s1, 21s2, and 21s3 in the superimposing unit 21 described later on the input side for receiving audio signals. , and is connected to a third switching unit 20C, which will be described later, on the output side.

Here, as will be described later, when the first switching section 20A enables the transmission of the audio signal from the connector 23A to the output section 18, the second switching section 20B switches between the connectors 23Aa, 23Ab, 23Ac, and 23Ad. It determines from which connector the audio signal can be transmitted to the output section 18 . Further, the third switching section 20C determines from which of the connectors 18Aa, 18Ab, 18Ac, and 18Ad of the output section 18 the audio signal is to be sent to the amplifier 8. FIG.

Furthermore, the superimposing unit 21 superimposes the audio signal received by the sub-input unit 24 on the audio signal received by the bypass input unit 25. The individual superimposing units 21s1, 21s2, and 21s3 receive The audio signals received by the connectors 24A1, 24A2, and 24A3 of the sub-input unit 24 are superimposed on the audio signals received.

Then, the first switching section 20A enables transmission of the audio signal from the second switching section 20B to the third switching section 20C when the first button 19A1 of the first switch 19A is pressed. That is, when the first button 19A1 of the first switch 19A is pressed, the first switching section 20A enables transmission of the audio signal from any one of the connectors 23Aa, 23Ab, 23Ac, and 23Ad to the output section 18. That is, the first switching section 20A makes it possible to transmit the audio signal received from the commander 2 to the output section 18 when the first button 19A1 of the first switch 19A is pressed.

Further, the first switching section 20A enables transmission of an audio signal from the individual superimposing section 21s1 to the third switching section 20C when the second button 19A2 is pushed. That is, when the second button 19A2 of the first switch 19A is pressed, the first switching section 20A enables transmission of the audio signal from the connector 24A1 to the output section 18. FIG. In other words, the first switching section 20A makes it possible to transmit the audio signal received from the personal computer 3 to the output section 18 when the second button 19A2 of the first switch 19A is pressed.

Further, the first switching section 20A enables transmission of an audio signal from the individual superimposing section 21s2 to the third switching section 20C when the third button 19A3 is pressed. That is, when the third button 19A3 of the first switch 19A is pressed, the first switching section 20A enables transmission of the audio signal from the connector 24A2 to the output section 18. FIG. That is, the first switching section 20A makes it possible to transmit the audio signal received from the optical disk player 4 to the output section 18 when the third button 19A3 of the first switch 19A is pressed.

Further, the first switching section 20A enables transmission of the audio signal from the individual superimposing section 21s3 to the third switching section 20C when the fourth button 19A4 is pushed. That is, when the fourth button 19A4 of the first switch 19A is pressed, the first switching section 20A enables transmission of the audio signal from the connector 24A3 to the output section 18. FIG. That is, the first switching unit 20A enables transmission of the audio signal received from the portable terminal 5 to the output unit 18 when the fourth button 19A4 is pushed in the first switch 19A.

Regarding the reception of the image signal, the first switching section 20A is interlocked with the state of depression of the first to fourth buttons 19A1 to 19A4 of the first switch 19A, similarly to the reception of the audio signal. That is, the first switching section 20A enables transmission of the image signal from the connector 23B of the main input section 23 to the connector 18B of the output section 18 when the first button 19A1 of the first switch 19A is pushed. That is, the first switching section 20A enables the image signal received from the commander 2 to be transmitted to the output section 18 when the first button 19A1 of the first switch 19A is pressed.

Also, the first switching unit 20A enables transmission of the image signal from the connector 24B1 to the connector 18B when the second button 19A2 is pushed. That is, the first switching section 20A makes it possible to transmit the image signal received from the personal computer 3 to the output section 18 when the second button 19A2 of the first switch 19A is pressed.

Further, the first switching section 20A enables transmission of the image signal from the connector 24B2 to the connector 18B when the third button 19A3 is pushed. That is, the first switching section 20A enables the image signal received from the optical disk player 4 to be transmitted to the output section 18 when the third button 19A3 of the first switch 19A is pressed.

Further, the first switching section 20A enables transmission of image signals from the connector 24B3 to the connector 18B when the fourth button 19A4 is pushed. That is, the first switching section 20A enables the image signal received from the mobile terminal 5 to be transmitted to the output section 18 when the fourth button 19A4 of the first switch 19A is pressed.

Next, the second switching section 20B determines from which of the connectors 23Aa, 23Ab, 23Ac, and 23Ad the transmission of the audio signal to the output section 18 is enabled. That is, the second switching unit 20B determines through which type of cable, such as an HDMI cable, an optical digital cable, a coaxial digital cable, or an analog cable, the audio signal is received from the commander 2 and transmitted to the output unit 18 as the cable 14A. .
Specifically, the second switching section 20B is connected to the connectors 23Aa, 23Ab, 23Ac, and 23Ad on the input side, and is connected to the first switching section 20A on the output side.

The second switching section 20B enables transmission of the audio signal from the connector 23Aa to the first switching section 20A when the first button 19B1 of the second switch 19B is pushed. That is, when the first button 19B1 of the second switch 19B is pushed, the second switching section 20B outputs the audio signal from the connector 23Aa to the output section 18 on condition that the first button 19A1 of the first switch 19A is pushed. enable transmission.

Further, the second switching section 20B enables transmission of an audio signal from the connector 23Ab to the first switching section 20A when the second button 19B2 of the second switch 19B is pushed. That is, when the second button 19B2 of the second switch 19B is pushed, the second switching section 20B outputs an audio signal from the connector 23Ab to the output section 18 on condition that the first button 19A1 of the first switch 19A is pushed. enable transmission.

Further, the second switching section 20B enables transmission of an audio signal from the connector 23Ac to the first switching section 20A when the third button 19B3 of the second switch 19B is pushed. That is, when the third button 19B3 of the second switch 19B is pushed, the second switching section 20B outputs the audio signal from the connector 23Ac to the output section 18 on condition that the first button 19A1 of the first switch 19A is pushed. enable transmission.

Further, the second switching section 20B enables transmission of an audio signal from the connector 23Ad to the first switching section 20A when the fourth button 19B4 of the second switch 19B is pushed. That is, when the fourth button 19B4 of the second switch 19B is pushed, the second switching section 20B outputs the audio signal from the connector 23Ad to the output section 18 on condition that the first button 19A1 of the first switch 19A is pushed. enable transmission.

In addition, the third switching unit 20C determines from which of the connectors 18Aa, 18Ab, 18Ac, and 18Ad the audio signal is to be sent to the amplifier 8. FIG. In other words, the third switching unit 20C determines through which type of cable, the HDMI cable, the optical digital cable, the coaxial digital cable, or the analog cable, the audio signal is to be sent to the amplifier 8 as the cable 30A.
Specifically, the third switching section 20C is connected to the first switching section 20A on the input side, and is connected to the connectors 18Aa, 18Ab, 18Ac, and 18Ad on the output side.

The third switching section 20C enables transmission of the audio signal from the first switching section 20A to the connector 18Aa when the first button 19C1 of the third switch 19C is pressed. That is, when the first button 19C1 of the third switch 19C is pushed, the third switching section 20C enables transmission of the audio signal from the connector determined by the first and second switching sections 20A and 20B to the connector 18Aa. As a result, the audio signal can be sent to the amplifier 8 from the connector 18Aa.

Further, the third switching section 20C enables transmission of an audio signal from the first switching section 20A to the connector 18Ab when the second button 19C2 of the third switch 19C is pushed. That is, when the second button 19C2 of the third switch 19C is pushed, the third switching section 20C enables transmission of the audio signal from the connector determined by the first and second switching sections 20A and 20B to the connector 18Ab. As a result, the audio signal can be sent to the amplifier 8 from the connector 18Ab.

Further, the third switching section 20C enables transmission of an audio signal from the first switching section 20A to the connector 18Ac when the third button 19C3 of the third switch 19C is pressed. That is, when the third button 19C3 of the third switch 19C is pressed, the third switching section 20C enables transmission of the audio signal from the connector determined by the first and second switching sections 20A and 20B to the connector 18Ac. As a result, the audio signal can be sent to the amplifier 8 from the connector 18Ac.

Further, the third switching section 20C enables transmission of the audio signal from the first switching section 20A to the connector 18Ad when the fourth button 19C4 is pushed in the third switch 19C. That is, when the fourth button 19C4 of the third switch 19C is pushed, the third switching section 20C enables transmission of the audio signal from the connector determined by the first and second switching sections 20A and 20B to the connector 18Ad. As a result, the audio signal can be sent to the amplifier 8 from the connector 18Ad.

Further, the fourth switching section 20D determines which of the connectors 29a, 29b, 29c, and 29d is enabled to transmit the audio signal to the superimposing section 21. FIG. In other words, the fourth switching unit 20D selects through which type of cable 28, the HDMI cable, the optical digital cable, the coaxial digital cable, or the analog cable, the audio signal is received from the microphone receiver 7 and transmitted to the output unit 18. decide.
Specifically, the fourth switching section 20D is connected to the connectors 29a, 29b, 29c, and 29d on the input side, and is connected to the superimposing section 21 described later on the output side.

The fourth switching section 20D enables transmission of an audio signal from the connector 29a to the superimposing section 21 when the first button 19D1 of the fourth switch 19D is pushed. Further, the fourth switching section 20D enables transmission of an audio signal from the connector 29b to the superimposing section 21 when the second button 19D2 of the fourth switch 19D is pushed.

Further, the fourth switching section 20D enables transmission of an audio signal from the connector 29c to the superimposing section 21 when the third button 19D3 of the fourth switch 19D is pushed. Furthermore, the fourth switching section 20D enables transmission of the audio signal from the connector 29d to the superimposing section 21 when the fourth button 19D4 of the fourth switch 19D is pushed.

The superimposing unit 21 superimposes the audio signal received by the sub-input unit 24 and the echo signal on the audio signal received by the bypass input unit 25, that is, the audio signal synthesized by the microphone 9 and not passed through the commander 2. It has the following first overlapping section 32 and second overlapping section 33 .
First, the first superimposing unit 32 superimposes an echo signal on the audio signal received by the bypass input unit 25 . Note that the echo signal is obtained, for example, based on data stored in a storage device.

The second superimposing unit 33 superimposes the audio signal received by the sub-input unit 24 on the audio signal on which the echo signal is superimposed by the first superimposing unit 32 . That is, the second superimposing unit 33 superimposes the audio signal based on the music data received from the source device other than the commander 2 on the audio signal on which the echo signal is superimposed. Here, the second superimposing section 33 has the individual superimposing sections 21s1, 21s2, and 21s3 described above. The individual superimposing units 21s1, 21s2, and 21s3 respectively superimpose the audio signals received from the personal computer 3, the optical disc player 4, and the mobile terminal 5 on the audio signals on which the echo signals are superimposed.

With the above configuration, any of HDMI cables, optical digital cables, coaxial digital cables, and analog cables can be used for receiving audio signals from the commander 2 to the switching device 1 .
That is, when an HDMI cable is used, by inserting the terminal of the HDMI cable into the connector 23Aa and pressing the first button 19B1 of the second switch 19B, the audio signal can be transferred from the commander 2 to the switching device 1 via the HDMI cable. be possible.

When an optical digital cable is used, by inserting the terminal of the optical digital cable into the connector 23Ab and pressing the second button 19B2 on the second switch 19B, the audio signal is transmitted from the commander 2 to the switching device 1 by the optical digital cable. can be delivered.
When a coaxial digital cable is used, by inserting the terminal of the coaxial digital cable into the connector 23Ac and pressing the third button 19B3 on the second switch 19B, the audio signal is sent from the commander 2 to the switching device 1 via the coaxial digital cable. can be delivered.

Furthermore, when an analog cable is used, by inserting the terminal of the analog cable into the connector 23Ad and pressing the fourth button 19B4 of the second switch 19B, the audio signal can be transferred from the commander 2 to the switching device 1 by the analog cable. be possible.
The audio signals received by the switching device 1 from the commander 2 at the connectors 23Aa, 23Ab, 23Ac, and 23Ad are the audio signals received from the microphone receiver 7 in the commander 2, the audio signals based on the music data, and the echo signals. It is given.

Also, for transmission of the audio signal from the switching device 1 to the amplifier 8, any cable such as an HDMI cable, an optical digital cable, a coaxial digital cable, or an analog cable can be employed.
That is, when an HDMI cable is used, by inserting the terminal of the HDMI cable into the connector 18Aa and pressing the first button 19C1 of the third switch 19C, the audio signal can be transferred from the switching device 1 to the amplifier 8 via the HDMI cable. be possible.

When an optical digital cable is used, by inserting the terminal of the optical digital cable into the connector 18Ab and pressing the second button 19C2 of the third switch 19C, the audio signal is output from the switching device 1 to the amplifier 8 via the optical digital cable. can be delivered.
When a coaxial digital cable is used, by inserting the terminal of the coaxial digital cable into the connector 18Ac and pushing the third button 19C3 on the third switch 19C, the audio signal is output from the switching device 1 to the amplifier 8 via the coaxial digital cable. can be delivered.

Furthermore, when an analog cable is used, by inserting the terminal of the analog cable into the connector 18Ad and pressing the fourth button 19C4 of the third switch 19C, the audio signal can be transferred from the switching device 1 to the amplifier 8 via the analog cable. be possible.

Furthermore, for transmission and reception of audio signals between the microphone receiver 7 and the switching device 1, any one of an HDMI cable, an optical digital cable, a coaxial digital cable, and an analog cable can be used.
That is, when an HDMI cable is used, by inserting the terminal of the HDMI cable into the connector 29a and pressing the first button 19D1 of the fourth switch 19D, the audio signal is transferred from the microphone receiver 7 to the switching device 1 by the HDMI cable. becomes possible.

When an optical digital cable is used, by inserting the terminal of the optical digital cable into the connector 29b and pressing the second button 19D2 of the fourth switch 19D, the sound from the microphone receiver 7 to the switching device 1 is transmitted through the optical digital cable. Signals can be passed.
When a coaxial digital cable is used, inserting the terminal of the coaxial digital cable into the connector 29c and pressing the third button 19D3 on the fourth switch 19D will cause the audio from the microphone receiver 7 to the switching device 1 to be transmitted via the coaxial digital cable. Signals can be passed.

Furthermore, when an analog cable is used, by inserting the terminal of the analog cable into the connector 29d and pressing the fourth button 19D4 on the fourth switch 19D, the audio signal is transferred from the microphone receiver 7 to the switching device 1 by the analog cable. becomes possible.

[Effect of Example]
According to the switching device 1 of the embodiment, the main input unit 23 has connectors 23Aa and 23Ab into which an HDMI terminal, an optical digital terminal, and a coaxial digital terminal can be respectively inserted as the connector 23A for receiving the audio signal from the commander 2. , 23Ac. In addition, the second switching section 20B determines from which of the connectors 23Aa, 23Ab, and 23Ac the audio signal can be transmitted to the output section 18 according to the selection made by the second switch 19B.

As a result, the main input unit 23 can receive a digital signal as an audio signal, so the switching device 1 can receive a high-quality audio signal from the commander 2 . In addition, the main input unit 23 can be connected to any of HDMI, optical digital and coaxial digital terminals. A cable can also be used.
As described above, the quality of voice in karaoke can be improved.

Further, according to the switching device 1, the main input section 23 has a connector 23Ad into which an analog terminal can be inserted, in addition to the connectors 23Aa, 23Ab, and 23Ac as the connector 23A for receiving the audio signal from the commander 2. FIG. In addition, the second switching section 20B determines from which of the connectors 23Aa, 23Ab, 23Ac, and 23Ad the audio signal can be transmitted to the output section 18 according to the selection of the second switch 19B.

Accordingly, since the main input unit 23 can also receive an analog signal as an audio signal, the switching device 1 can receive an audio signal from the commander 2 even if the commander 2 sends an analog signal as an audio signal. can be done. Therefore, the versatility of the switching device 1 can be enhanced.

According to the switching device 1, the output unit 18 includes connectors 18Aa, 18Ab, and 18Ac into which an HDMI terminal, an optical digital terminal, and a coaxial digital terminal can be inserted, respectively, as the connector 18A for sending out audio signals to the amplifier 8. have Further, the third switching section 20C selects which connector among the connectors 18Aa, 18Ab, and 18Ac according to the selection by the third switch 19C, and the audio signal is sent from the connector determined by the first and second switching sections 20A and 20B. Decide whether to allow transmission.

As a result, the output unit 18 can output a digital signal as an audio signal, so the switching device 1 can output a high-quality audio signal to the amplifier 8 . In addition, since any one of the HDMI terminal, optical digital terminal, and coaxial digital terminal can be inserted into the output unit 18, the amplifier 8 can receive any of HDMI, optical digital, and coaxial digital cables as a cable for receiving digital signals. can also be adopted.
As described above, the quality of voice in karaoke can be further improved.

Further, according to the switching device 1, the output section 18 has a connector 18Ad into which an analog terminal can be inserted, in addition to the connectors 18Aa, 18Ab, and 18Ac, as the connector 18A for sending out the audio signal to the amplifier 8. FIG. Further, the third switching section 20C selects which connector among the connectors 18Aa, 18Ab, 18Ac, and 18Ad according to the selection by the third switch 19C, and selects the audio from the connector determined by the first and second switching sections 20A and 20B. Decide whether to allow signal transmission.

As a result, the output unit 18 can also output an analog signal as an audio signal, so the switching device 1 can output an audio signal to the amplifier 8 even if the amplifier 8 receives an analog signal as an audio signal. can. Therefore, the versatility of the switching device 1 can be further enhanced.

Further, according to the switching device 1, the bypass input unit 25 has an HDMI terminal, an optical digital terminal, and a coaxial digital terminal as connectors 29 for receiving audio signals directly from the microphone receiver 7 without going through the commander 2. connectors 29a, 29b, and 29c into which the connectors can be inserted. Further, the fourth switching section 20D determines from which of the connectors 29a, 29b, and 29c the audio signal can be transmitted to the superimposing section 21 according to the selection made by the fourth switch 19D.

As a result, the bypass input unit 25 can receive a digital signal as an audio signal, so the switching device 1 can receive a high-quality audio signal from the microphone receiver 7 . In addition, the bypass input unit 25 can be connected to any of HDMI, optical digital, and coaxial digital terminals. can also be used.
As described above, the quality of voice in karaoke can be further improved.

According to the karaoke switching device 1, the bypass input unit 25 includes a connector 29d into which an analog terminal can be inserted, in addition to the connectors 29a, 29b, and 29c as the connector 29 for receiving the audio signal from the microphone receiver 7. have. Further, the fourth switching section 20D determines from which of the connectors 29a, 29b, 29c, and 29d the audio signal can be transmitted to the superimposing section 21 according to the selection made by the fourth switch 19D.

As a result, the bypass input unit 25 can also receive an analog signal as an audio signal, so even if the microphone receiver 7 sends out an analog signal as an audio signal, the switching device 1 can receive the audio signal from the microphone receiver 7. can receive. Therefore, the versatility of the switching device 1 can be further enhanced.

Further, according to the switching device 1, the superimposing section 21 includes first and second superimposing sections 32 and 33 described below.
First, the first superimposing unit 32 superimposes an echo signal on the audio signal received by the bypass input unit 25 . The second superimposing unit 33 superimposes the audio signal received by the sub-input unit 24 on the audio signal on which the echo signal is superimposed by the first superimposing unit 32 . Then, the first switching unit 20A transmits the audio signal via the second superimposing unit 33 to the output unit 18 when enabling transmission of signals from the connectors 24A1, 24A2, and 24A3 of the sub-input unit 24 to the output unit 18. enable you to

As a result, the output unit 18 can output to the amplifier 8 an audio signal obtained by superimposing an echo signal on an audio signal received from a source device other than the commander 2 .
Therefore, according to the switching device 1, echoes can be enjoyed even when singing songs stored in other source devices.

[Modification]
The aspect of the switching device 1 is not limited to the embodiment, and various modifications can be considered. For example, according to the switching device 1 of the embodiment, the sub-input unit 24 can receive audio signals and image signals sent from the personal computer 3, the optical disk player 4, and the portable terminal 5, which are source devices other than the commander 2. However, it may be possible to receive audio signals and image signals sent out from one or two of the personal computer 3, the optical disk player 4 and the portable terminal 5. FIG.

1 Switching Device (Karaoke Switching Device) 2 Commander (Karaoke Commander) 3 Personal Computer (Other Source Device) 4 Optical Disk Player (Other Source Device) 5 Mobile Terminal (Other Source Device) 7 Microphone Receiver 8 Amplifier 9 Microphone 10 Speaker 14A Cable 14At Terminal 18 Output Part 20A First Switching Part (Switching Part) 23 Main Input Part 23A, 23Aa, 23Ab, 23Ac, 23Ad Connector (Inlet) 24 Sub Input Part 24A, 24A1, 24A2, 24A3 Connector (Inlet) ) 25 Bypass input section 27A1, 27A2, 27A3 Cable 27A1t, 27A2t, 27A3t Terminal 32 First overlapping section 33 Second overlapping section

Claims (4)

An audio signal is received from one source device selected from among a plurality of source devices including a karaoke commander, which is one of the source devices, and other source devices other than this karaoke commander, and a predetermined audio signal is received and sent to the amplifier,
In a karaoke switching device that switches source devices that receive audio signals according to a change in selection of the plurality of source devices,
The karaoke commander receives an audio signal based on the audio collected by the microphone from the microphone receiver, superimposes the audio signal received from the microphone receiver on the audio signal based on the music data, and sends it out,
The karaoke switching device is
A main input for receiving an audio signal from the karaoke commander, having an HDMI terminal, an optical digital terminal, and a coaxial digital terminal as cable terminal insertion openings used for receiving the audio signal from the karaoke commander. Department and
a sub-input unit having at least one cable terminal receptacle for receiving an audio signal from the other source device, the sub-input unit receiving the audio signal from the other source device;
an output unit that sends out an audio signal toward the amplifier;
A bypass input unit having an HDMI terminal, an optical digital terminal, and a coaxial digital terminal as insertion points for cable terminals used for receiving audio signals from the microphone receiver without passing through the karaoke commander. A karaoke switching device comprising: In the karaoke switching device according to claim 1,
a first switching unit that determines from which source device among the karaoke commander and the other source devices to enable transmission of an audio signal to the output unit;
When the first switching section enables the transmission of audio signals from the karaoke commander to the output section, the HDMI terminal and the optical digital terminal in the main input section are selected according to the selection of a predetermined push button type selection switch. and a second switching unit that determines from which of the receptacles of each of the coaxial digital terminals from which the audio signal can be transmitted to the output unit,
The karaoke switching device, wherein the other source device is one or more of a personal computer, an optical disc player, and a portable terminal. In the karaoke switching device according to claim 2,
a first superimposing unit that superimposes an echo signal for adding an echo to the sound emitted from the speaker on the audio signal received by the bypass input unit;
a second superimposing unit that superimposes the audio signal received by the sub-input unit on the audio signal on which the echo signal is superimposed in the first superimposing unit;
The first switching section enables the transmission of the audio signal via the second superimposing section to the output section when the transmission of the audio signal from the other source device to the output section is enabled. A karaoke switching device characterized by: In the karaoke switching device according to claim 3,
The sub-input unit is capable of receiving audio signals from multiple types of the other source devices,
The socket of the sub-input unit is provided for each type of the other source device,
The second superimposing unit has, for each type of the other source device, an individual superimposing unit that superimposes the audio signal received from each type of the other source device on the audio signal on which the echo signal is superimposed. death,
The first switching section enables the transmission of the audio signal from the receptacle of the sub-input section to the output section. A karaoke switching device, characterized in that it decides whether or not to enable transmission of an audio signal to a part.

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