JPH056479U - Voice switching device for karaoke device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a karaoke device of a voice multiplex system, a singer's voice can be uttered or withdrawn without performing any operation. [Configuration] When only an accompaniment music signal is input to the left channel input terminal 1, and when an accompaniment music signal and a vocal signal which is a singer's voice are input to the right channel input terminal 2, A microphone input terminal 6 for mixing to the left and right channels is provided, and a mute circuit 4 or VCA25 triggered by a signal voltage input to the microphone input terminal 6 is provided in the right channel circuit.
Was set up. As a result, when a signal is input to the microphone input terminal 6, the singer's voice disappears.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  INDUSTRIAL APPLICABILITY The present invention is applicable to a voice switching device for a karaoke device, which can be applied to a voice multiplexing system. It is related.

[0002]

[Prior art]

  Laser sources or music sources used in karaoke machines In addition to VHD format video discs, CDs, cassette tapes, and There are various types such as log records. Of these, except for analog records Is called an audio multiplex system, and one of the left and right channels is mu Music signal and vocal signal are recorded, and music is recorded on the other channel. In some cases, only the back signal is recorded. Use such a music source To enjoy karaoke while playing Select a channel and play the sound from the speaker, and while listening to the lyrics card, The voice will be sung as an accompaniment. When you don't remember a song Select the channel where the signal and vocal signal are recorded and listen to the singer's song. I will remember well.

[0003]

[Problems to be solved by the device]

  The above music source is called audio multiplex system, and Since the singer's song is recorded only on the It is a convenient thing that can be turned on and off. That is, turn off the voice of the singer Sing with a microphone in a standing state, and sing the voice of the singer in the part where you forget the lyrics or melody It should be taken out. However, this operation is provided on the main body of the karaoke machine. Since it will be done by switching the switch, it is difficult to operate while actually singing. Yes, it means that the function of the time is not fully utilized.

[0004]   The present invention has been made in view of this point, and the person who actually sings sings it while Let's provide a device that can automatically put in and out the voice of a singer without operating a switch It is what

[0005]

[Means for Solving the Problems]

  The present invention provides one of the left and right channels as a means for solving the above problems. Music and vocal signals are input from one channel and the other channel is input. Karaoke device of voice multiplex system where only music signal is input from the channel In addition, a microphone input terminal for mixing to the left and right channels is provided, and The music signal and the vocal signal are input to the circuit of the channel, A configuration with a mute circuit triggered by the signal voltage input to the input terminal It was done. Also, instead of the mute circuit, the signal input to the microphone input terminal Provided with voltage control amplifier whose gain is negatively controlled by voltage It has a different structure.

[0006]

[Action]

  With this structure, you can forget the lyrics or melody while singing. When the noise disappears, the mute circuit or voltage control The singer's voice, which was stopped by the pump operation, will appear, so the song will continue. become. When I sing the song again until I understand the lyrics, the mute circuit Since it acts to mute your voice, you can enjoy karaoke in the same state as before. .

[0007]

【Example】

  An embodiment of the present invention will be described below with reference to FIG. 1 is the input for the left channel 2 is an input terminal for the right channel. Input terminal for left channel Only the music signal (accompaniment music signal) is input to 1 and the input for the right channel The power terminal 2 has a music signal for accompaniment music and a vocal signal that is the singing voice of the singer. A composite signal is input. Input terminal 1 is one input of mixing amplifier 3 as it is. The input terminal 2 is connected to the terminal 3a, and the input terminal 2 is connected through the resistor 5 of the mute circuit 4 to the mixing circuit. It is connected to the other input terminal 3b of the pump 3. The mixing amplifier 3 has one more There is an input end 3c, and a microphone input terminal 6 is connected to this input end 3c via a microphone amplifier 7. It is connected. The output terminal 3d of the mixing amplifier 3 is connected to the output terminal 8. .

[0008]   The mute circuit 4 will be described. 9 is an amplifier for auto mute, and the input side is It is connected to the output side of the equalizer 7 and outputs a part of the output signal of the microphone amplifier 7. It amplifies to a constant level voltage. On the output side of the auto mute amplifier 9 Through the capacitor 10 and the resistor 11, the diodes 12, 13 and the capacitor 14, the resistor 15 is connected to regulate the AC voltage that is the output signal of the auto mute amplifier 9. The flow is smooth. The output side of diode 13 is connected via resistor 16 The base of the short transistor 17 is connected. The mute transistor 17 The inductor is connected to the connection point between the resistor 5 and the mixing amplifier 3, Is grounded.

[0009]   In this circuit configured in this way, the audio multiplex method is applied to the left and right input terminals 1 and 2. Type music source player is connected to the output terminal 8 via an amplifier. Connect the marker. When a video disc, a CD, etc. are installed in the player and operated, If there is no input to the microphone input terminal 6, the signals input to the left and right input terminals 1 and 2 are It is mixed by the mixing amplifier 3, amplified, and emitted from the speaker.

[0010]   A microphone is connected to the microphone input terminal 6 to send a signal (karaoke user's song Voice), the signal is mixed by the mixing amplifier 3 and sent to the speaker. A part of the ginger is rectified and smoothed by being amplified to a constant voltage by the auto mute amplifier 9. Since it is added to the base of the mute transistor 17, this mute transistor Triggering the switch 17 to turn it on and inputting it to the input terminal 2 for the right channel. Erase the gic and vocal signals. Therefore, input terminal 1 from the speaker The music signal input to and the singing voice that enters the microphone are radiated.

[0011]   If the singer forgets the lyrics or melody and stops speaking, the mute time Since the path 4 does not work, it is input to the left and right input terminals 1 and 2 from the speaker. The signal is emitted. While the karaoke user was listening to the singer's voice, he thought about the lyrics, etc. When you sing and sing it again, the mute circuit 4 operates, so the right channel input The music signal and vocal signal entering the input terminal 2 disappear.

[0012]   FIG. 2 shows another embodiment of the present invention. In this circuit, the left channel Input terminal 1 for channel and input terminal 2 for right channel are input to mixing amplifier 18. The output terminal is connected to the resistor 5 of the mute circuit 4. The other part Does not change. In this circuit, the mixing amplifier 18 is the right channel. From the sum of the music signal and vocal signal input to the left channel Only the vocal signal is selected because it acts to subtract the music signal (find the difference). Since it is ejected and enters the mute circuit 4, efficient control can be performed. Become.

[0013]   FIG. 3 shows another embodiment of the present invention. In this circuit, In addition to the circuit of 1, the transistor 18 that operates simultaneously with the mute transistor 17 is installed. The base of the transistor 18 is connected to the cathode side of the diode 13 via the resistor 19. The collector of this transistor 18 is connected to the It is connected to the child 21 and the emitter is grounded. And the collector is separated via resistor 22 Is connected to the base of the transistor 23. The input for the left channel in this circuit A resistor 24 is connected between the terminal 1 and the mixing amplifier 3, The collector of 23 is connected to the connection point between this resistor 24 and the mixing amplifier 3, Tta is grounded.

[0014]   In this circuit, when there is a signal input from the microphone input terminal 6, it mutes When the signal on the input terminal 2 side is erased by turning on the transistor 17, the transition Star 19 is turned on at the same time. When this transistor 19 is off, the transistor 23 Off, if transistor 19 is off, transistor 23 is on, so the microphone input terminal When there is no signal input to 6, the signal on the input terminal 2 side passes, and when there is an input, it On the contrary to the above, only the signal on the input terminal 1 side passes.

[0015]   The circuits described above all use a mute circuit. Can be realized without using a mute circuit. Figure 4 shows an example Instead of the mute circuit, the signal voltage input to the microphone input terminal is negative. Voltage control amplifier (hereinafter VCA That is) 25 is provided. VCA25 is applied to the control end 25a Since the amplification degree changes in proportion to the voltage, the inverter 26 is provided. Other The same parts as those in FIG. 1 are designated by the same reference numerals.

[0016]   In this embodiment, when a signal is input to the microphone input terminal 6, the VCA 25 Amplification degree decreases. As a result, the singer's voice, which had been heard until then, can no longer be heard It Conversely, as long as you sing in karaoke, you will not hear the singer's voice.

[0017]

[Effect of device]

  The present invention is a voice switching device for a karaoke device configured as described above. Therefore, people singing in karaoke and other You can use the audio multiplex music source without Becomes

[Brief description of drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention.

FIG. 2 is a circuit diagram of another embodiment of the present invention.

FIG. 3 is a circuit diagram of another embodiment of the present invention.

FIG. 4 is a circuit diagram of still another embodiment of the present invention.

[Explanation of symbols]

1 input terminal 2 input terminals 3 mixing amplifier 4 Mute circuit 6 Microphone input terminal 8 output terminals 9 Auto mute amplifier 17 Mute transistor 19 transistor 23 transistor 25 VCA

Claims (2)

[Scope of utility model registration request] 1. A music signal and a vocal signal are input from one of the left and right channels,
In a voice multiplexing karaoke device in which only the music signal is input from the other channel, a microphone input terminal for mixing the left and right channels is provided, and the microphone is connected to the circuit of the channel into which the music signal and the vocal signal are input. A voice switching device for a karaoke device, comprising a mute circuit triggered by a signal voltage input to an input terminal. 2. A music signal and a vocal signal are input from one of the left and right channels,
In a voice multiplexing karaoke device in which only the music signal is input from the other channel, a microphone input terminal for mixing the left and right channels is provided, and the microphone is connected to the circuit of the channel into which the music signal and the vocal signal are input. A voice switching device for a karaoke device, which is provided with a voltage control amplifier in which a gain is controlled in a negative direction by a signal voltage input to an input terminal.