JPH0514990A - Voice processing unit - Google Patents

Abstract

PURPOSE:To prevent howling with simple configuration by delaying a sound signal produced from a microphone at the recording of the voice signal and supplying the delayed signal to a speaker. CONSTITUTION:In the case of recording a voice signal generated from a sound source 10, a changeover switch 5 is thrown to the position of a terminal (b) by the control of a system controller. A voice signal inputted to a microphone 1 is fed to a recording and reproducing section 4 and a delay circuit 3 via an input amplifier 2. The recording and reproducing section 4 records the voice signal onto a recording medium such as a magnetic tape. On the other hand, the circuit 3 delays the voice signal and gives it to an output amplifier 6 via the changeover switch 5. Since the sound generated from a speaker 8 is deviated from the sound from a sound source 10, no howling is generated and monitored. Furthermore, the switch 5 is thrown to the position of a terminal (a) at the reproducing by the recording and, reproducing section 4 and the signal is monitored without any delay.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voice processing device for processing voice.

[0002]

2. Description of the Related Art Conventionally, as a device for processing voice,
A voice signal is formed by converting the voice into an electric signal by a microphone or the like, and the formed voice signal is recorded on a magnetic tape as a recording medium by a tape recorder or the like,
There is an audio signal recording / reproducing apparatus which reproduces an audio signal recorded on the magnetic tape and outputs the reproduced audio signal from a speaker or the like.

[0003]

In the conventional audio signal recording / reproducing apparatus, while collecting sound with a microphone,
When a sound signal corresponding to the collected sound is supplied to the speaker device etc. from the output terminal for monitor etc. and output again as sound, the microphone collects the sound generated by the speaker device. If this happens, an oscillating (howling) phenomenon will occur, and it will not be possible to collect the sound originally intended to be collected by the microphone due to the generation of the oscillating sound. There was a risk of damage.

It is an object of the present invention to provide a voice processing device capable of preventing the howling phenomenon from occurring with a simple structure.

[0005]

A voice processing apparatus of the present invention collects a voice generated from a sound source, converts the collected voice into an electric signal, and outputs the electric signal. A voice generating means for generating a voice corresponding to the output electric signal, and a voice generating means for generating a voice corresponding to the electric signal output from the voice generating means, when the voice generating means generates a voice. Delaying means for delaying the generated electric signal and supplying it to the sound generating means.

[0006]

With the above structure, the howling phenomenon can be prevented from occurring.

[0007]

EXAMPLES The present invention will be described below with reference to examples of the present invention.

FIG. 1 is a diagram showing a schematic configuration of an audio signal recording / reproducing apparatus to which the present invention is applied, as an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a microphone that collects voice, converts it into an electric signal (that is, voice signal), and outputs the microphone. Reference numeral 2 denotes an input amplifier that amplifies and outputs the voice signal output from the microphone 1. Reference numeral 3 denotes a delay circuit which delays and outputs the audio signal amplified by the input amplifier 2, and 4 records the audio signal amplified by the input amplifier 2 on a recording medium such as a magnetic tape, and the recording medium. A recording / reproducing unit for reproducing and outputting the audio signal recorded in
Is a selector switch for selectively outputting the audio signal output from the delay circuit 3 and the audio signal output from the recording / reproducing unit 4, and 6 is an amplifier for amplifying the audio signal output from the selector switch 5, and outputting the amplified audio signal. An output amplifier for outputting the audio signal amplified by the output amplifier 6 to the outside, and 8 for connecting the audio signal output from the output amplifier 6 to the output terminal 7. A speaker device that generates a voice corresponding to the input voice signal by inputting through 9 is a system controller that controls the operation of the device, and 10 is a sound source that the microphone 1 collects.

In FIG. 1, when recording the voice generated from the sound source 10, the system controller 9 gives an instruction to the changeover switch 5, and the changeover switch 5
Is connected to the b terminal side in the figure.

The sound generated from the sound source 10 is input to the microphone 1, converted into a sound signal in the microphone 1, and amplified by the input amplifier 2 to a level required for the recording / reproducing section 4 in the next stage. Is output.

The audio signal output from the input amplifier 2 is supplied to the recording / reproducing unit 4 and the delay circuit 3, and the audio signal supplied to the recording / reproducing unit 4 is recorded on a recording medium such as a magnetic tape. The audio signal supplied to the delay circuit 3 is delayed and then supplied to the b terminal of the changeover switch 5, and the changeover switch connected to the b terminal side in the figure according to the instruction from the system controller 9 as described above. 5
Is supplied to the output amplifier 4 through the output amplifier 4, amplified by the output amplifier 6, and output from the output terminal 5 to the outside.

Then, in order to monitor the sound collected by the microphone 1 during recording, a speaker device 8 is connected to the output terminal 7, and a sound signal inputted in the speaker device 8 is converted into sound. When generated, the phase of the sound generated by the speaker device 8 collected by the microphone 1 is deviated from the phase of the sound generated by the sound source 10 by being delayed by the delay circuit 3. Therefore, the howling phenomenon does not occur, and at the time of recording, the sound corresponding to the sound signal collected by the microphone 1 is monitored by the speaker device without the deterioration of the recorded sound signal and the damage of the speaker device. Will be able to.

The system controller 9 is used for reproducing the audio signal recorded on the recording medium in the recording / reproducing unit 4 and monitoring it by the speaker device 8.
Instructs the changeover switch 5 to connect to the a terminal side in the figure, and the reproduction signal output from the recording / reproducing unit 4 is input to the output amplifier 6 without being delayed by the delay circuit 3 and the output terminal Is supplied to the speaker device 8 via 7,
The speaker device 8 can monitor the audio signal reproduced in the recording / reproducing unit 4 by being converted into the sound in the speaker device 8 and being generated.

As described above, in the present embodiment, the voice signal generated by the microphone at the time of recording the voice signal is delayed by the delay circuit and supplied to the speaker device so that the voice collected by the microphone is output. Even when the sound is monitored by the speaker device, the howling phenomenon is prevented from occurring, and the sound corresponding to the sound signal picked up by the microphone 1 is output to the speaker without deterioration of the recorded sound signal or damage to the speaker device. The audio signal output from the recording / reproducing unit 4 is not delayed by the delay circuit 3 when the audio signal recorded on the recording medium in the recording / reproducing unit 4 is reproduced. The unit 4 is a device for simultaneously recording and reproducing audio and images, such as a video tape recorder. Also in the case, not that the deviation between the image and the sound is generated.

[0016]

As described above, according to the present invention, it is possible to provide a voice processing device capable of preventing the occurrence of the howling phenomenon with a simple structure.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an audio signal recording / reproducing apparatus to which the present invention is applied, as an embodiment of the present invention.

[Explanation of symbols]

 1 Microphone 2 Input Amplifier 3 Delay Circuit 4 Recording / Playback Section 5 Changeover Switch 6 Output Amplifier 7 Output Terminal 8 Speaker Device 9 System Controller 10 Sound Source

Claims (1)

Claim: What is claimed is: 1. A conversion unit that collects sound generated from a sound source, converts the collected sound into an electric signal, and outputs the electric signal, and an electric signal output from the conversion unit. A voice generating unit for generating a corresponding voice, and when a voice corresponding to the electric signal output from the voice generating unit is generated by the voice generating unit, the electric signal generated by the converting unit is A voice processing device, comprising: a delay means for delaying and supplying to the voice generating means.