JPS6214197A - Automatically accompanying apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic accompaniment device, and in particular to an automatic accompaniment device that automatically switches a recording medium (recording tape, record 2 or lower recording tape) so that a model voice is not outputted by microphone input. This invention relates to an automatic accompaniment device that performs.

[Conventional technology]

Recently, in automatic accompaniment devices, so-called karaoke devices,
There is something called audio multiplexing that allows you to practice while listening to model voices by professional singers.

[Problem that the invention seeks to solve]

By the way, with the conventional automatic accompaniment device as described above, when practicing, you operate a changeover switch on the main body of the device to listen to the accompaniment and a model voice, and then operate the changeover switch again to change the output from the microphone to the speaker. The practice is to listen to the audio of your own performance and practice. However, there is a problem in that the changeover switch must be operated each time, making the operation complicated.

The present invention was made to solve the above problems, and an object of the present invention is to provide an automatic accompaniment device that automatically turns off the input of a model voice from a recording medium to a speaker.

[Means for solving problems]

The automatic accompaniment device according to the present invention is provided with automatic switching means that is activated by the output of the microphone input terminal and turns off input from the audio input terminal to the speaker.

[Effect]

In this invention, when the singer receives an output from the L microphone, an automatic switching device is created. The model voice from the recording medium that is input from the audio input terminal no longer comes out from the speaker, and only the performance voice from the microphone and the accompaniment from the recording medium are heard from the speaker.

〔Example〕

Fig. 1 is a circuit diagram showing an embodiment of the present invention, and 1 is an input signal from a recording device in which the automatic accompaniment device Casio PR (hereinafter simply referred to as accompaniment) and audio are input separately. 2 is a karaoke input circuit into which only accompaniment is input; 3 is an accompaniment input terminal; 4 is a professional audio input circuit into which only songs by professional singers are input; 5 is an audio input terminal;
6 is a monitor terminal of the professional audio input circuit 4; 7 is a microphone input circuit for inputting signals from the microphone used by the singer; 8 is a microphone input terminal; 9 is a close-up of the monitor terminal 6; 10.11 is the An amplifier of the microphone input circuit 7, 12 is a relay connected to the output side of the amplifier 1, and a relay 13 is connected to the professional audio input circuit 4. ,R,,R2,R,.

R4, R5, R are the karaoke input circuit 2. A resistor is connected to the professional audio input circuit 4, 14 is an amplifier for the karaoke input circuit 2, 15 is an amplifier for the professional audio input circuit 4, and 16.17 is an output terminal for the signal output from the up 14.15. So, the speaker is connected, 18 is @
An echo generator connected to the output side of the amplifier 10 of the microphone input circuit 7, the output side of which is connected to the resistors R3 and R4.
The first is input to amplifier 14.15 through.

19 is a strength indicator connected to the professional audio input circuit 4 and the microphone input circuit 7;
, rectifiers 21 and 24, and indicating portions 22 and 25. 26 is a pitch indicator connected to the professional audio input circuit 4 and microphone input circuit 7, which includes limit amplifiers 27, 31, frequency discriminators 28, 32, rectifier 29,
33, and an instruction section 30, 34. As the frequency discriminator 28.32, for example, a limit amplifier 27°3
Apply the output from 1 to a resistor via a capacitor, and use one that causes the voltage generated across this resistor to vary depending on the frequency. Therefore, the output of the rectifiers 29 and 33 becomes a voltage whose magnitude depends on the frequency. 35 is a differential amplifier connected to the output side of the rectifier 21.24 of the strength indicator circuit 19, 36 is a Schmitt circuit connected to the differential amplifier 35, and 37 is the rectifier 129, 33 of the pitch indicator circuit 26. A differential amplifier connected to the output side, 38 a Schmitt circuit connected to the differential amplifier 37, 39 an ear circuit connected to each Schmitt circuit'#I36, 38, 4o the output of the OR circuit 39 It is a score display connected to the side.

Next, let me explain how it works.

In the automatic accompaniment apparatus constructed as described above, when the apparatus is put into operation, a signal from the recording tape is applied to the tone generator circuit 1. Here, the accompaniment is applied to the karaoke input circuit 2 from the accompaniment input terminal 3, and the audio is applied to the professional audio input circuit 4 from the audio input terminal 5.

Next, the signal applied to the karaoke input circuit 2 passes through the resistor R0, is amplified by the amplifier 14 by 11G, and is output from the output terminal 16 to operate the speaker.

Further, the signal applied to the professional audio input circuit 4 is transmitted to the switch 13. The signal is amplified by the amplifier 15 through the resistor R2, and output from the output terminal 17 to operate the speaker.

Also, the output signal from the microphone used by the singer is applied to the microphone input circuit 7 from the microphone input terminal 8, and after being amplified by the amplifier 1o, it is applied to the echo generator 18.
Apply an echo and pass through resistor RR3) R4 to up 14,
15 and output from output terminals 16 and 17 to operate the speaker.

At the same time, the signal amplified by the amplifier 10 is branched, enters the amplifier 11, is amplified, operates the relay 12, turns off the switch 13, and prevents the output of the ground sound from the output terminal 17.

A part of the signal from the input terminal 5 of the professional audio is Sui, Sochi 1
3, the signal from the microphone input terminal 8 is amplified by an amplifier 10 and then input to a strength indicator 19 and a pitch indicator 26.

Then, in the strength indicator 19, the respective average values are transmitted through amplifiers 20, 23 and rectifiers 21, 24 to the indicator 22,
25 is displayed for comparison.

In the pitch indicator 26, the limit amplifier 27.31
, the frequency discriminators 28, 32, and the rectifier 29.degree. 33, and the average values corresponding to the respective frequencies are displayed for comparison on the indicating section 30.34.

The outputs of the rectifiers 21 and 24 of the strength indicator 19 are input to a differential amplifier 35, and are input to an OR circuit 39 through a Schmitt circuit $36.

On the other hand, the outputs of the rectifiers 29 and 33 of the audio indicator 26 are input to a differential amplifier 37, and a Schmitt circuit 38
The signal is input to the OR circuit 39 via the .

Then, the signal from OR time: 1839 is sent to the score display section 40.
is input.

FIG. 2 shows an example of the pitch indicator 26.
It is designed to be displayed on a CRT. Zunawachi,
19A1. On the tCRT screen, 19B shows the correct pitch based on the model voice, and 19C is a bar indicator that does not indicate the strength of the singer's voice input from the microphone.

FIG. 3 shows an example of the pitch indicator 26.
26A1. The screen of tCRT, 28B is 5 marks, 2
6C shows the correct pitch according to the model voice, and 26D shows the performance voice by the singer.

Incidentally, the strength indicator 19 and the pitch indicator 26 can be displayed simultaneously on the screen of one CRT, each can be swung by a meta-pointer, or various other indicators can be used.

When using it, the singer holds the microphone in one hand and sings along with the accompaniment from the speaker, and from the time the microphone outputs the sample audio from the recording tape, it no longer comes out from the speaker, and only the accompaniment and the singer's voice are heard from the speaker. flows from The strength and weakness of the notes and the pitch are displayed in comparison on the strength indicator 19 and the pitch indicator 26, so that the singer can immediately know what is wrong with his or her singing style. When the song ends, 1 point will be deducted on the score display section 40.
It is displayed as a score subtracted from 00 points.

You can get a rough idea of your singing ability from this score.

〔Effect of the invention〕

As explained above, in this invention, the input of the output from the audio input terminal to the speaker is turned off by the automatic switching means activated by the output of the microphone input terminal. There is an advantage that when the operation of inputting the performance sound from the microphone is repeated, there is no need to manually operate the changeover switch each time.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, and FIG.
FIG. 3 is a circuit diagram showing an example of a strength indicator in the embodiment of FIG. 1, and FIG. 3 is a diagram showing an example of a pitch indicator. In the figure, 3 is an accompaniment input terminal, 5 is an audio input terminal, 8 is a microphone input terminal, 10, 11, 14, 15 is an amplifier,
12 is a relay, 13 is its contact, and 16.17 is an output terminal.

Claims (1)

[Claims] It has an accompaniment input terminal for inputting accompaniment from a recording medium, an audio input terminal for inputting model audio from the recording medium, and a microphone input terminal for inputting performance audio from a microphone, and from each of the input terminals. The automatic accompaniment device amplifies the input of the audio signal using an amplifier and inputs the amplified signal to the speaker, the automatic accompaniment device including automatic switching means that is activated by the output of the microphone input terminal and turns off the input of the output from the audio input terminal to the speaker. An automatic accompaniment device characterized by: