JPH05100690A - Audio reproducing device - Google Patents

Abstract

PURPOSE:To obtain an audio reproducing device capable of attaching a reverberation on the singing signal of a singer. CONSTITUTION:This device is provided with an arithmetic part 5 which takes out a differential signal between right and left channels from the analog sound reproduction circuit 2 of a laser disk, a sound multiple balance control potentiometer 4 which varies the output level of the arithmetic part 5, an adder 6 which adds the output signal of the arithmetic part 5 on digital sound reproducing output, and switches 12, 13, and 14 which input the output signal of the potentiometer 4 to a reverberation circuit 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound reproducing device effective for use in a laser disk device or the like.

[0002]

2. Description of the Related Art In recent years, the spread of sound reproducing devices has been remarkable. As a sound source for the sound reproducing device, there are a recording tape, a laser disk, a CD and the like. Among them, there is a voice multiplex system for singing practice. In general, recording tapes and audio multiplex discs of CDs,
The singer's voice signal is recorded in the right channel, and the accompaniment signal is recorded in the left channel. In a laser disk, a stereo accompaniment signal is usually recorded in digital sound, a signal obtained by mixing an accompaniment signal and a singer's singing voice signal is recorded in the right channel of analog sound, and only an accompaniment signal is recorded in the left channel.

By the way, using this audio multiplex system,
Voice multiple balance function and voice changer function are realized. The voice multiple balance function is intended to be useful for singing practice by changing the mixing ratio of the singer's singing signal and accompaniment signal. With the voice changer function, when you sing with a microphone, the singer's singing signal automatically disappears and only the accompaniment signal becomes, and when you stop singing, the singer's singing signal automatically comes out, when singing,
If you can't sing because you're stuck, it's possible for you to enjoy such things as the singer's singing helps you, or you can sing as if you are duet with the singer.

A conventional sound reproducing device will be described below. FIG. 2 is a block diagram of a conventional sound reproducing device having a voice multiplexing function. In FIG. 2, 1 is a digital audio reproduction circuit, 2 is an analog audio reproduction circuit, 3 is a digital-analog switching circuit, 4 is a sound multi-balance control potentiometer, 5 is an arithmetic unit for extracting a difference signal between the right channel and the left channel, and 6 is Adder, 7 is a microphone amplifier circuit,
8 is an echo circuit, 9 is a microphone mixing circuit, 10 to 1
3 is an electronic switch for signal switching, and 15 is a microphone voice detection circuit.

In the sound device composed of the above-mentioned constituent elements, when the sound multi-balance function is used, the digital / analog switching circuit 3 is switched to the digital side, and the analog voice reproducing circuit 2 is operated by the arithmetic unit 5 to the right. Extract the difference signal between the channel and the left channel. A signal in which an accompaniment signal and a singer singing signal are mixed is recorded in the right channel of the analog sound of the laser disk, and only the accompaniment signal is recorded in the left channel. Only the signal can be taken out. The level of this singer singing signal is varied by the multi-tone balance control potentiometer 4, and its output is added by the adder 6.
It is added to the output of the digital audio reproduction circuit 1. The switch 10 is switched to the A side when stereophony is realized, and to the B side otherwise. In the case of a laser disc on which digital voice is not recorded, a CD multi-tone disc, etc., it is used by switching to the B side. The switch 11 is switched between the laser disk tone poly and the CD tone poly. This is because, as described above, the recording format of the singer's song is different between the laser disc sound polyphony and the CD sound polyphony. The output of the switch 11 is only the singer singing signal with the accompaniment signal canceled. The switch 13 is used when selecting the polyphonic function. When the polyphonic function is used, it is switched to the A side and the other is switched to the B side. The switch 12 is switched to the A side when using the voice change function.

On the other hand, the signal input from the microphone is amplified through the microphone amplifier 7, and its output is directly input to the microphone mixing circuit 9 and the echo circuit 8
, And the output of the echo circuit 8 is input to the microphone mixing circuit 9. The microphone mixing circuit 9 mixes the accompaniment signal, the microphone signal, and the echo signal added to the song. Further, the microphone voice detection circuit 15 detects the input signal from the microphone and outputs the presence / absence information of the microphone signal. This information signal is used as a switch change signal for voice change. Voice change can be realized by turning on / off the switch 13 depending on the presence / absence of a microphone signal.

[0007]

However, in the above-mentioned conventional configuration, when singing by utilizing the polyphonic function,
The singing voice sung by my microphone is echoed and sounds comfortable, but the vocal signal of the singer does not echo, and there is a problem that there is a feeling of strangeness especially when I duet using the voice changer function. I had.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a sound reproducing apparatus capable of applying the same echo not only to one's own singing voice but also to the singing signal of a singer.

[0009]

In order to achieve this object, the present invention provides a calculating means for extracting a difference signal between a right channel and a left channel from an analog audio reproduction output of a laser disk player, and varying the level of the difference signal. The multi-tone balance control potentiometer, adding means for adding the output signal of the potentiometer to the performance signal, and means for inputting the output signal of the potentiometer to the echo circuit are provided.

[0010]

In this configuration, the singer singing signal is extracted,
The output level can be changed and added to the digital audio reproduction output, and also input to the echo circuit so that the echo can be added to the singer's singing signal.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are designated by the same reference numerals.

In FIG. 1, 1 is a digital audio reproduction circuit, 2 is an analog audio reproduction circuit, 3 is a digital-analog switching circuit, 4 is a multi-tone balance control potentiometer, and 5 is an arithmetic unit for extracting a difference signal between the right channel and the left channel. , 6 is an adder, 7 is a microphone amplifier circuit, 8 is an echo circuit, 9 is a microphone mixing circuit, 10 to 14 are signal switching electronic switches, 15 is a microphone voice detection circuit, 1
6 is a buffer. The mutual relationship and operation of each of the above components will be described. When the switch 14 is on the A side, the function is exactly the same as that of the conventional example, and the description thereof is omitted.

When the switch 14 is switched to the B side, the singer's singing signal (not including the accompaniment signal) which is the output signal of the switch 13 is input to the echo circuit 8 via the switch 14. The echo circuit 8 adds an echo, and the microphone mixing circuit 9 mixes it with a performance signal and outputs it.

As described above, according to this embodiment, it is possible to extract only the singer's singing signal and add an echo equivalent to the microphone sound.

[0015]

As is apparent from the above embodiments, according to the present invention, the calculating means for extracting the difference signal between the right channel and the left channel from the analog audio reproduction output of the laser disk player and the level of the difference signal are varied. A multi-tone balance control potentiometer, an adding means for adding the output signal of the potentiometer to the digital audio reproduction output,
Since a means for inputting the output signal of the potentiometer to the echo circuit is provided, an echo is added to the singer's singing signal in the same way as his or her own voice, and the same echo is applied when a duet is made with the singer using the voice changer function. Therefore, it is possible to provide a sound reproducing device that is costly and has a sense of unity.

[Brief description of drawings]

FIG. 1 is a block diagram of a sound reproducing device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional sound reproducing device.

[Explanation of symbols]

 4 multi-tone balance control potentiometer 6 adder 8 echo circuit 14 switch

Claims (1)

[Claims] 1. A device having a digital audio reproduction function, an analog audio reproduction function, a microphone mixing function, and an echo function, and an arithmetic means for extracting a difference signal between a right channel and a left channel from an analog audio reproduction output. An audio multiplex balance control potentiometer for varying the level of the difference signal, an adding means for adding an output signal of the potentiometer to a digital audio reproduction output, and an input means for inputting the output signal of the potentiometer to an echo circuit. Sound reproduction device.