CN1212599A

CN1212599A - Apparatus for recording sound having function of recording stereophonic sound and method therefor

Info

Publication number: CN1212599A
Application number: CN98106670A
Authority: CN
Inventors: 鱼吉秀
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 1997-09-25
Filing date: 1998-04-20
Publication date: 1999-03-31
Also published as: JPH11113084A; GB9807450D0; KR19990026651A; GB2329747A

Abstract

An apparatus for recording sound having a function of recording stereophonic sound includes a sound input source, a sound localizing unit for splitting and modulating the sound input through the input source so that a stereophonic sound effect can be generated, and a recording unit for recording a stereophonic sound output from the sound localizing unit. Therefore, it is possible to hear stereophonic sound with a sound reproducing apparatus constituted of a two-speaker audio system without an additional apparatus by applying a sound localizing process to the sound recording apparatus.

Description

Audio recording apparatus and method thereof with stereo writing function

The present invention relates to have the audio recording apparatus of record stereo function, especially relate to a such audio recording apparatus with record stereo function, it might write down the voice signal of handling input by acoustic location and the voice signal on the SoundRec medium, the three-dimensional diffusion by sound signal source realizes stereophonic effect in the audio player of the audio system that comprises two loud speakers so that be implemented in, and the invention still further relates to the method relevant with this device.

Be different from special monaural sound to diffusion by the microphone record, the stereo sound effect of stereo generation is by the sound that writes down on more than two sound channels being regenerated and produce by carrying out three-dimensional diffusion for its sound source, thereby feels the direction and the distance of sound.Usually, stereo sound effect is to be realized by two sound channels in stereo recorder, a stereotape and a stereo radio broadcasting.Preferably use three or three above sound channels, thereby realize better stereophonic effect.

Cassette tape recorder and video camera have on the SoundRec medium record from nature, from the ability of the sound other SoundRec cleaning of medium or that send from the broadcasting station.Comprise that simultaneously being used for regenerative recording is referred to as tape cassette player or the television receiver that comprises that a left side and right loud speaker are exported at the SoundRec medium or from an audio player of two loudspeaker audio systems of the voice signal of broadcasting station emission.Particularly, stereo tape deck and stereo reproduction means resolve into the sound that will write down and will regenerate more than two passages and write down or this sound of regenerating.

The purpose of this invention is to provide a audio recording apparatus with record stereo function, by an acoustic location device is added to an audio recording apparatus and the SoundRec of locating sound wave on an audio recording apparatus, this device might be at the sound that is not having uppick on the common acoustic regenerating unit of attachment device to locate.

Another object of the present invention provides the above-mentioned stereosonic method of device recording of using.

In order to realize first purpose, the invention provides a kind of audio recording apparatus, comprise an audio input signal source; An acoustic location unit is used to decompose and modulate the sound of importing by input signal source, so that can produce stereophonic effect; With a record cell, be used to write down export from this acoustic location unit stereo.

In order to realize second purpose of the present invention, provide a kind of record stereosonic method, the step that comprises has, and decomposition and modulation are by the voice signal of input signal source input; And the voice signal that will decompose and modulate is recorded on the left side and right SoundRec passage of a SoundRec medium.

In the present invention, stereophonic signal is to be decomposed and to modulate according to the reference range between two loud speakers of a sound reproduction unit.

In conjunction with the drawings for the description of most preferred embodiment of the present invention, it is obvious that above-mentioned purpose of the present invention and advantage will become.

Fig. 1 illustrates the structure of the audio player that comprises two common loudspeaker audio systems;

Fig. 2 illustrates the audio player that comprises the twin loudspeaker audio system that has an acoustic location device;

Fig. 3 illustrates the detail drawing of the structure of the audio system part among Fig. 2;

Fig. 4 is the simple structure of an audio recording apparatus;

Fig. 5 illustrates an audio recording apparatus that has according to stereo writing function of the present invention;

Fig. 6 is another embodiment according to audio recording apparatus of the present invention;

Fig. 7 describes the stereosonic method of record according to the present invention.

With reference to the structure of the audio player that comprises two common loudspeaker audio systems shown in the figure 1, this audio player comprises audio system unit 10, left speaker 12 and right loud speaker 14.The audio recording apparatus and the audio player that wherein have two loudspeaker audio systems can be combined into the configuration shown in the table 1.That is, be used for audio player that playback record outputs to it at the sound on the SoundRec medium and being used for loud speaker, as shown in the following table 1 by combined with the audio recording apparatus that is used for stereophonic signal is recorded on the SoundRec medium.

[table 1]

	Tape deck	Regenerating unit
	Tape deck	Regenerating unit	Example 1	VCR	Television set
Example 2	Video camera	Television set	Example 1	VCR	Television set
Example 2	Video camera	Television set	Example 3	CD player	Television set
Example 4	CD player	The twin loudspeaker audio system	Example 3	CD player	Television set
Example 4	CD player	The twin loudspeaker audio system	Example 5	CD player	The twin loudspeaker audio system

The audio player that is included in for example television set of two loudspeaker audio systems shown in Fig. 1 is by combined with the audio recording apparatus that for example resembles video camera, this video camera utilizes two input units, be microphone, the sound from the outside is recorded on the recording medium as stereo.In other words, the audio recording apparatus resemble the video camera is connected to the audio player that for example resembles television set by coaxial cable or cable.Regenerated by for example audio player by the voice signal of TV signal sound recordings by video camera resemble the television set.

Being used for the audio recording apparatus that resembles video camera with stereo record, to write down stereo on the SoundRec medium be to adopt two microphones.But, can not be with stereophonic signal regeneration the becoming stereophonic effect that is recorded on the SoundRec medium by the audio player that the television set that resembles the twin loudspeaker audio system is constructed like this.This is because the stereosonic decomposition effect in recording process is not remarkable, and can not provide the decomposition effect because the distance of separating of two loud speakers of audio player is narrow from the stereophonic reproduction of SoundRec medium.

So,, an acoustic location device is attached on the audio player that comprises two loudspeaker audio systems in order to address this problem.Be installed in acoustic location device in the audio player that comprises two loudspeaker audio systems being recorded in the stereo decomposition of benchmark on the SoundRec medium, produce a three dimensional sound effect, modulate this voice signal so that have the sensation of the three-dimensional on distance and direction and this voice signal is outputed to a loud speaker.This acoustic location device modulates is stereo from the benchmark of recording medium regeneration, just looks like to be three-dimensional stereo so that make the user sound.In other words, the distance between two loud speakers that are contained in the audio player is the width of the imagination.

The Dolby of the realization stereophonic effect that adopts in practice ^TMThe surround sound technology structurally has four surround channels, that regeneration is used for is preceding, two passages of a left side and right loud speaker, be used for central authorities loud speaker central passage and be used for the passage of the loud speaker of rear signal.In the present invention, the acoustic location technology is used to audio recording apparatus, provides three-dimensional stereophonic effect so that allow in the audio player of the audio system that comprises two loud speakers.

So, thereby even because the acoustic location device is added to the audio player that for example resembles television set and makes the user that widens of mirror image distance between two loud speakers adopt and comprise that the audio player of two loudspeaker audio systems also can hear stereo by separation and modulation and regenerative recording at the stereophonic signal on the SoundRec medium.As shown in Figure 2.

Fig. 2 shows the additional audio player that comprises two loudspeaker audio systems that the sound wave positioner is arranged.

Comprise an audio system unit 20, left speaker 22 and right loud speaker 24 in the audio player shown in Fig. 2.Reference symbol 22 wherein ' and the 24 ' virtual loud speaker of expression, between the distance that has can obtain imagining distance by increasing the acoustic location device.

The CONSTRUCTED SPECIFICATION of the audio system unit 20 in Fig. 3 presentation graphs 2.Audio system unit 20 comprises and being used for being recorded in the regeneration unit 32 that a voice signal on the SoundRec medium 30 is regenerated, one be used for by decompose and be modulated at regeneration unit 32 regeneration sound and by virtual loud speaker 22 ' and 24 ' between produce and produce an acoustic location unit 34 of stereophonic effect, an and amplifier 36 that is used for the voice signals of 34 outputs from the acoustic location unit are amplified and the voice signal that amplifies is outputed to

loud speaker

22 and 24 apart from effect.

The audio player that comprises two loudspeaker audio systems shown in Fig. 2 can produce a stereophonic effect by decomposing and being modulated at the stereo benchmark that writes down on the SoundRec medium 30, so the distance between two loud speakers is widened on mirror image ground by additional this acoustic location device.

But, because additional acoustic location device 34 must append to this audio player, so need and in regeneration, make the quality of sound descend for the additional expense of hardware.

So when being necessary to increase additional acoustic location device, must carefully select to add to this acoustic location device on the device.

It is more extensive to consider that the audio player ratio that comprises two loudspeaker audio systems is used to write down stereosonic audio recording apparatus, and to be added to audio player more effective so be added to the audio recording apparatus ratio for the acoustic location device.This is owing to be used for regenerative recording and can hear stereo when not adding additional device at the common audio player of the voice signal on the SoundRec medium common, because comprise the audio recording apparatus of this acoustic location device decomposes and modulation will be recorded sound and it recorded on the SoundRec medium, so that in the process of regeneration, can produce a stereophonic effect.So, need a kind of technology that the acoustic location device is added to the tape deck that audio recording apparatus maybe is used for this acoustic location device to produce recently.

Fig. 4 shows the simple structure of audio recording apparatus.

Audio recording apparatus among Fig. 4 comprises a record cell 42, is used for the voice signal through two

microphone

40a and 40b input is recorded in a recording medium.

But, as mentioned above, because the distance between two loud speakers of the audio player of two loudspeaker audio system formations is short, so the voice signal that is recorded on the SoundRec medium can not produce stereophonic effect.

Fig. 5 shows the audio recording apparatus that has the record stereo function according to of the present invention.

The device with the stereosonic function of record shown in Fig. 5 comprises a left side and right microphone 50a and 50b; An acoustic location unit 52 is used for the stereophonic signal by a left side and right microphone 50a and 50b input is decomposed, modulates and exports; And a SoundRec unit 54, be used for the voice signal of handling in the acoustic location unit is recorded in the SoundRec medium.

Fig. 6 shows audio recording apparatus according to another embodiment of the invention.This audio recording apparatus comprises an acoustic location unit 62, voice signal (L and R) from a regenerating unit 60 outputs of the audio system unit 62 that comprises two loud speakers is decomposed and modulates, with a SoundRec unit 64, be used for the voice signals (L ' and R ') of 62 outputs from the acoustic location unit are recorded the SoundRec medium.

Fig. 7 describe one according to of the present invention for the stereo method that writes down.

By two microphone input stereo audios (step S70).

Be decomposed and modulate (step S72) by microphone input stereo.

At this, comprise that the audio player of two loudspeaker audio systems decomposes and modulation for stereophonic signal according to the reference range between two loud speakers.

The voice signal that is decomposed and modulates is recorded on the left side of SoundRec medium and the right SoundRec passage (S74).

In the audio recording apparatus with record stereo function according to the present invention, might utilize the audio player that has two loudspeaker audio systems to listen to stereo and acoustic location handled the device that is used for this audio recording apparatus and not have to add.

Claims

1. audio recording apparatus comprises:

An audio input signal source;

An acoustic location unit is used to decompose and modulate the sound of importing by input signal source, so that can produce stereophonic effect; With

A record cell is used to write down export from this acoustic location unit stereo.

2. one kind is write down stereosonic method, and the step that comprises has:

Decomposition and modulation are by the voice signal of input signal source input; And

The voice signal that decomposes and modulate is recorded on the left side and right recording channel of a SoundRec medium.

3. according to the method for claim 2, wherein, stereophonic signal is to be decomposed and to modulate according to the reference range between two loud speakers of a sound reproduction unit.