JPS63158958A - Volce remote conference device - Google Patents

Abstract

PURPOSE:To improve the reality of a conference, by transmitting voice after mixing the position information of the microphone of a speaker when it is transmitted, and outputting the voice from the speaker corresponding to a position by detecting the position in formation of the speaker at the time of reproducing the voice at an opponent side. CONSTITUTION:The microphones M1, M2, M3,...Mn, are propared for every attendant in plural conferences, and the speakers SP1, SP2, SP3,...SPn corresponding to the positions of the microphones M1, M2, M3,...Mn, respectively are arranged in a conference room at the opponent side. When the voice is transmitted, the position information of the microphone of the speaker is set at a position information setting part 10, and after mixing at a mixing part 15, it is transmitted. When it is reproduced at the opponent side, the position information of the speaker is detected at a position information detecting part 17, and the voice is outputted from the speaker whose position corresponds. In such way, it is possible to heighten the reality of the conference.

Description

[Detailed Description of the Invention] [Summary] In an audio teleconferencing device, each of a plurality of conference participants is provided with a microphone, and the other party's conference room is provided with speakers corresponding to positions corresponding to the positions of the respective microphones. The speaker's voice is heard on the other party's side from a speaker located at a position corresponding to the speaker's microphone, thereby enhancing the sense of realism.

[Industrial application field]

The present invention relates to an improvement in an audio teleconferencing device for transmitting audio for holding a conference between remote points in an audio teleconferencing system.

An audio teleconferencing system is a system that connects geographically separated conference rooms with communication lines and allows conferences to be held by transmitting audio and handwritten text and graphic information using, for example, an electronic blackboard. be.

In this case, the central device is an audio teleconferencing device that transmits audio, and it is desirable that the audio teleconferencing device be able to conduct a realistic conference.

[Prior art and problems to be solved by the invention] In conventional audio teleconferencing devices, the voices of multiple conference participants are mixed and transmitted, and the other party drives one or two speakers at the same time to transmit the audio. was reproducing.

Therefore, the positional relationship of conference participants in each other's conference rooms is not known,
There is a problem with the lack of realism.

[Means for solving the problem] The problem described above is that, as shown in the principle diagram of FIG. 1, microphones M1, M2, . M3゜...Mn, and each microphone M1 is placed in the other party's conference room.
．． M2. M3. ...Speakers SPI, SP2 . . . corresponding to the positions corresponding to the positions of Mn, respectively. SP3.・
...When installing the SPn and transmitting audio, the location information of the speaker's microphone is set in the location information setting section 16, mixed and transmitted in the mixing section 15, and when reproduced on the other party's side, the utterance is This problem is solved by the audio teleconferencing device of the present invention, which detects the location information of the person using the location information detection unit 17 and outputs audio from the speaker corresponding to the location.

[Effect]

According to the present invention, in the other party's conference room, the sound is emitted from the speaker at the position corresponding to the speaker's position, so the positional relationship of each speaker becomes clear and the sense of realism in the meeting can be enhanced. I can do it.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 2 is a block diagram of the main parts of the transmitting side of the embodiment of the present invention,
FIG. 3 is a block diagram of the main parts of the receiving side of the embodiment of the present invention,
Figure 4 shows speakers in an example conference room.

FIG. 5 is a diagram showing the positions of microphones and speakers. FIG. 5 is a diagram showing the position code of the microphone of an example of a speaker.

In this embodiment, as shown in FIG. 4, there are four conference participants, each of whom is provided with microphones M1 to M4, and the other party's conference room is equipped with microphones M1 to M4 at positions corresponding to the positions of the microphones M1 to M4. As shown in FIG. 4, the speakers SP1 to SP4
This is an example when .

In FIG. 2, the voice signals from the microphones M1 to M4 are amplified while the position of the speaker is detected by the position detection amplifiers 1a to 1d, mixed by the voice mixing section 3, and mixed by the mixing section 3. In step 4, location information is also mixed and sent to the other party.

The position of the speaker is detected by the position detection amplifiers 1a to 1d in the following manner.

For example, if there is an input from the speaker to microphone M1,
Since the output level of the position detection amplifier 1a exceeds the silent level, it is detected that there is an input from the microphone M1, and the position of the speaker is detected as the position corresponding to the microphone M1.

This position detection information is input to the code converter 2, which encodes the position according to the input signals to the microphones M1 to M4, and sends a signal to the tone switch 5.

This encoding is as shown in FIG. 5 (since there are four microphones, a 3-bit position code is determined, and when there is no input to microphones M1 to M4, 0.0. 0, when there is an input to microphone M1, it is 0.0.1, and when there is input to microphone M2, it is 0.
, 1.0, and when there is an input to microphone M3, it is 0,
1.1, and when there is an input to microphone M4, it is 1.0
．． 0, and 1 when there is input to two or more microphones.
．． 1.1.

The tone switching unit 5 includes three tone generating units f1 that generate tones of different single frequencies within the audio frequency band.
Tones from the tone generators 6a, f2)-tone generators 5b and f3 tone generators 6C are input, and corresponding to the 3-bit code sent from the code converter 2, for example, 0.0 When it is 0, no tone is sent, when it is 0.0.1, the tone of fl is sent, when it is 0.1.0, the tone of f2 is sent, and when it is 1.1.1, the tone of f1, f2. , f3 tones are sent to the mixing section 4.

In the mixing section 4, the audio signal from the microphone and the tone from the tone switching section 5 are mixed and transmitted to the other party.

On the other side, the amplifier 7 shown in FIG.
b, 9c, and are sent to the variable gain amplifiers 11a to lid, and branching filters 9a, 8b detect the presence or absence of toes yf1, f2°f3.

The tone signal that has passed through the branching filters 8a, 8b, and 8c is sent to the output amplifier gain control section 10.

The output amplifier gain control section 10 decodes the position information of the microphone sending the audio signal using the sent tone signal, increases the gain of the variable gain amplifier corresponding to this position from 0, and controls the gain of the variable gain amplifier. Outputs audio from the speaker connected to.

However, if there are multiple speakers, all speakers SP1 to SP
Audio is output from P4.

In this way, on the other party's side, the speaker's voice is output from the speaker corresponding to the speaker's position, so the sense of realism in the conference can be enhanced.

〔Effect of the invention〕

As explained in detail above, according to the present invention, the other party can:
Since the speaker's voice is output from the speaker corresponding to the speaker's position, it has the effect of increasing the sense of presence in the meeting.

[Brief explanation of the drawing]

FIG. 1 is a diagram of the principle of the present invention. FIG. 2 is a block diagram of the main parts on the transmitting side of an embodiment of the present invention. FIG. 3 is a block diagram of the main parts of the receiving side of the embodiment of the present invention. The figure shows a speaker and a microphone in an example conference room. FIG. 5 is a diagram showing the position of the speaker. FIG. 5 is a diagram showing the position code of the speaker's microphone as an example. In the figure, 1a to 1d are position detection amplifiers, 2 is a code conversion section, 3 is an audio mixing section, 4.15 is a mixing section, 5 is a tone switching section, 6a to 6c are tone generating sections, 8a to 8C are demultiplexing sections filter; 9a to 9c are tone removal filters; 10 is an output amplifier gain control section; 11a-1id is a variable gain amplifier; 16 is a position information setting section; 17 is a position information detection section; M1 to Mn are microphones; SP1 to SPn are Shows the speaker. #17F-Sent #! Kakeru f11 mouth

Claims (1)

[Claims] In an audio remote conference device that transmits audio for holding a conference between remote points, microphones (M1, M2, M3, . . .
...Mn), and the other party's conference room has speakers (SP1, SP2) corresponding to the positions of the respective microphones (M1, M2, M3, ...Mn).
, SP3, . An audio teleconferencing device characterized in that when reproducing on the other party's side, position information of the speaker is detected by a position information detection section (17), and audio is output from a speaker corresponding to the position.