JPH02260932A - Voice multiplex system - Google Patents
Voice multiplex systemInfo
- Publication number
- JPH02260932A JPH02260932A JP1082504A JP8250489A JPH02260932A JP H02260932 A JPH02260932 A JP H02260932A JP 1082504 A JP1082504 A JP 1082504A JP 8250489 A JP8250489 A JP 8250489A JP H02260932 A JPH02260932 A JP H02260932A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- signals
- synchronous
- audio
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 claims abstract description 29
- 230000005236 sound signal Effects 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
- Stereo-Broadcasting Methods (AREA)
Abstract
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、音声多重方式に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to an audio multiplexing system.
〈従来の技術〉
近年、いわゆるＡＶ機器には、サラウンドシステムを搭
載したものが増えている。しかしながら、従来のサラウ
ンドシステムは、４チャンネルの音声信号を２チャンネ
ルの音声信号に多重・してそれをデコーダで再生して臨
場感を高めるように構成されている。<Prior Art> In recent years, more and more so-called AV devices are equipped with surround systems. However, conventional surround systems are configured to multiplex four-channel audio signals into two-channel audio signals and reproduce the multiplexed signals using a decoder to enhance the sense of realism.
〈発明が解決しようとする課題〉
本発明は、４チャンネルの音声信号を多重して１チャン
ネルで伝送し、受信側で４チャンネルの音声信号の再生
が可能な音声多重方式を提供することを目的とする。<Problems to be Solved by the Invention> An object of the present invention is to provide an audio multiplexing method that multiplexes four channels of audio signals and transmits them in one channel, allowing the receiving side to reproduce the four channels of audio signals. shall be.
〈課題を解決するための手段〉
本発明では、上述の目的を達成するために、４チャンネ
ルの音声信号を、同期信号に同期させて順次切換えるこ
とにより時分割多重して音声多重信号とし、この音声多
重信号に前記同期信号を重畳して同期音声多重信号とし
て！チャンネルで伝送し、伝送された同期音声多重信号
を、同期信号と音声多重信号とに分離し、分離された同
期信号に同期させて音声多重信号を時分割復調して４チ
ャンネルの音声信号を再生するようにしている。<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention performs time-division multiplexing on four-channel audio signals by sequentially switching them in synchronization with a synchronization signal to produce an audio multiplexed signal. The synchronization signal is superimposed on the audio multiplex signal to produce a synchronous audio multiplex signal! The synchronous audio multiplexed signal transmitted through the channel is separated into a synchronous signal and an audio multiplexed signal, and the audio multiplexed signal is time-division demodulated in synchronization with the separated synchronous signal to reproduce the 4-channel audio signal. I try to do that.
〈作用〉
上記構成によれば、４チャンネルの音声信号を時分割多
重して１チャンネルで伝送し、４チャンネルの音声信号
を復調するようにしているので、疑似的に４チャンネル
の音声信号を再生する従来のサラウンドシステムに比べ
て迫力のある音場の再生が可能となる。<Operation> According to the above configuration, the 4-channel audio signals are time-division multiplexed and transmitted in 1 channel, and the 4-channel audio signals are demodulated, so that the 4-channel audio signals are reproduced in a pseudo manner. Compared to conventional surround systems, it is possible to reproduce a more powerful sound field.
〈実施例〉
以下、図面によって本発明の実施例について、詳細に説
明する。<Examples> Examples of the present invention will be described in detail below with reference to the drawings.
第１図は、本発明の音声多重方式の基本構成を示すブロ
ック図である。FIG. 1 is a block diagram showing the basic configuration of the audio multiplexing system of the present invention.
この音声多重方式では、４チャンネルの音声信号Ｌ（左
）、Ｒ（右） 、Ｂａ ｃ ｋ （後方） 、Ｕｐ （
上方）を、時分割多重回路１で切換同期信号発生回路２
の同期信号に同期したタイミングで順次スイッチングす
ることにより、時分割多重して音声多重信号とする。こ
のスイッチングの周期は、必要とする周波数範囲の上限
の値を、Ｗ（Ｈｚ）とすると、１／２Ｗ＋４＝ １／８
Ｗ（秒）以下に選択される。この音声多重信号は、同期
合成回路３で切換同期信号が重畳されて同期音声多重信
号とされてｌチャンネルの伝送路で送信される。In this audio multiplexing system, 4-channel audio signals L (left), R (right), Back (rear), Up (
(above) is switched by the time division multiplexing circuit 1.The synchronization signal generation circuit 2
By sequentially switching at timings synchronized with the synchronization signal of , time division multiplexing is performed to produce an audio multiplexed signal. The period of this switching is 1/2W+4=1/8, where W (Hz) is the upper limit of the required frequency range.
W (seconds) or less is selected. This audio multiplex signal is superimposed with a switching synchronization signal in the synchronization synthesis circuit 3 to form a synchronous audio multiplex signal, which is transmitted over an l-channel transmission path.
受信側では、この同期音声多重信号を同期分離回路４で
音声多重信号と同期信号とに分離する。On the receiving side, the synchronous audio multiplex signal is separated into an audio multiplex signal and a synchronization signal by a synchronous separation circuit 4.
音声多重信号は、時分割復調回路５で同期切換信号復調
回路６の制御によって同期信号に同期したタイミングで
順次スイッチングされて時分割復調され、さらに、積分
回路７〜ＩＯで平滑化されて４チャンネルの音声信号り
、Ｒ，Ｂａ ｃ ｋ 、Ｕｐとして出力されるようにな
っている。The audio multiplexed signal is sequentially switched and time-division demodulated by the time-division demodulation circuit 5 at a timing synchronized with the synchronization signal under the control of the synchronization switching signal demodulation circuit 6, and is further smoothed by the integration circuits 7 to IO to form four channels. The audio signals are output as R, Back, and Up.
第２図は、本発明の音声多重方式をテレビジョン放送に
適用した場合のブロック図である。FIG. 2 is a block diagram when the audio multiplexing system of the present invention is applied to television broadcasting.
先ず、送信側においては、４つのマイクロフォン１１〜
１４からの４チャンネルの音声信号しく左）、Ｒ（右）
、Ｂａ ｃ ｋ （後方） 、Ｕｐ （上方）を、時
分割多重回路１５で、例えば、１５．７５ｋＨ２の同期
信号に同期したタイミングで順次切換えることにより、
音声多重信号とし、この音声多重信号に切換同期信号発
生回路１６からの同期信号を同期合成回路Ｉ７で合成し
て同期音声多重信号とする。以後は、従来のテレビジョ
ン放送と同様に、ＦＭ変！ＩＭＩ器１８でＦＭ変調され
、変調器１９で変調された映像信号とグイプレクサー２
０で混合されて送信アンテナ２１からテレビジョン電波
として放射される。First, on the transmitting side, four microphones 11 to
4-channel audio signal from 14 (left), R (right)
, Back (backward), and Up (upward) are sequentially switched by the time division multiplexing circuit 15 at a timing synchronized with, for example, a 15.75kHz synchronization signal.
A synchronous audio multiplex signal is generated, and a synchronous signal from the switching synchronous signal generation circuit 16 is synthesized with the audio multiplex signal by a synchronous synthesis circuit I7 to obtain a synchronous audio multiplex signal. From then on, like conventional television broadcasting, FM Hen! The video signal that is FM modulated by the IMI device 18 and modulated by the modulator 19 and the guiplexer 2
0 and is radiated from the transmitting antenna 21 as television radio waves.
受信側では、このテレビジョン電波を受信し、テレビジ
ジン受像機２２の各声検波出力、すなわち、同期音声多
重信号を、音声多重復調用のアダプタ２３に与える。こ
のアダプタ２３の同期分離回路２４に人力された同期音
声多重信号は、同期信号と音声多重信号とに分離される
。同期分離回路２４からの音声多重信号は、時分割復調
回路２５で同期切換信号復調回路２６の制御によって同
期信号に同期したタイミングで順次スイッチングされて
時分割復調され、さらに、各積分回路２７〜３０でそれ
ぞれ平滑化されてアンプ３１〜３４を介して各スピーカ
３５〜３８から音声としてそれぞれ出力される。On the receiving side, this television radio wave is received, and each voice detection output of the TV signal receiver 22, that is, a synchronous audio multiplex signal, is provided to an adapter 23 for audio multiplex demodulation. The synchronous audio multiplex signal input to the synchronous separation circuit 24 of this adapter 23 is separated into a synchronous signal and an audio multiplex signal. The audio multiplexed signal from the synchronization separation circuit 24 is sequentially switched and time-division demodulated by the time-division demodulation circuit 25 at a timing synchronized with the synchronization signal under the control of the synchronization switching signal demodulation circuit 26, and is then time-division demodulated by the time-division demodulation circuit 25. The signals are smoothed and output as audio from the speakers 35 to 38 via the amplifiers 31 to 34, respectively.
このように４チャンネルの音声信号を時分割多重して１
チャンネルで伝送し、受信側では同期信号に同期させて
時分割復調して４チャンネルの音声信号を再生するよう
にしているので、２チャンネルの音声信号を受信して疑
似的に４チャンネルの音声信号を再生する従来のサラウ
ンドテレビに比べて迫力のある臨場感を得ることができ
る。In this way, four channels of audio signals are time-division multiplexed and one
On the receiving side, the 4-channel audio signal is reproduced by time-division demodulation in synchronization with the synchronization signal, so when the 2-channel audio signal is received, the 4-channel audio signal is reproduced. You can get a more powerful sense of reality compared to conventional surround TV that plays back.
上述の実施例では、テレビジョン放送に適用した場合に
ついて説明したけれども、本発明はテレビジョン放送に
限るものではなく、例えば、４チャンネルの音声信号を
上述のように多重してモノラルとして録音したテープを
、上述の音声多重復調用のアダプタ２３を備えた再生装
置で再生するこにより、容易に臨場感のあるサラウンド
効果を楽しむことができる。Although the above-mentioned embodiment describes a case in which it is applied to television broadcasting, the present invention is not limited to television broadcasting. For example, the present invention is not limited to television broadcasting. By playing back with a playback device equipped with the above-mentioned audio multiplex demodulation adapter 23, it is possible to easily enjoy a realistic surround effect.
〈発明の効果〉
以上のように本発明によれば、４チャンネルの音声信号
を時分割多重して１チャンネルで伝送し、受信側では、
同期信号に同期させて音声多重信号を時分割復調して４
チャンネルの音声信号を再生するようにしているので、
２チャンネルの音声信号から疑似的に４チャンネルの音
声信号を再生する従来のサラウンドシステムに比べて迫
力のある音場の再生が可能となる。<Effects of the Invention> As described above, according to the present invention, four channels of audio signals are time-division multiplexed and transmitted in one channel, and on the receiving side,
The audio multiplexed signal is time-division demodulated in synchronization with the synchronization signal.
Since I am trying to play the audio signal of the channel,
It is possible to reproduce a more powerful sound field than with conventional surround systems that reproduce pseudo-four-channel audio signals from two-channel audio signals.
第１図は本発明の基本構成を示すブロック図、第２図は
本発明をテレビジョン放送に適用した場合のブロック図
である。
１、！５・・・時分割多重回路、４．２４・・・同期分
離回路、５．２５・・・時分割復調回路。FIG. 1 is a block diagram showing the basic configuration of the present invention, and FIG. 2 is a block diagram when the present invention is applied to television broadcasting. 1,! 5... Time division multiplex circuit, 4.24... Synchronization separation circuit, 5.25... Time division demodulation circuit.
Claims (1)
て順次切換えることにより時分割多重して音声多重信号
とし、この音声多重信号に前記同期信号を重畳して同期
音声多重信号として１チャンネルで伝送し、伝送された
同期音声多重信号を、同期信号と音声多重信号とに分離
し、分離された同期信号に同期させて音声多重信号を時
分割復調して４チャンネルの音声信号を再生することを
特徴とする音声多重方式。(1) Four channels of audio signals are time-division multiplexed by sequentially switching them in synchronization with a synchronization signal to produce an audio multiplexed signal, and the synchronization signal is superimposed on this audio multiplexed signal to form a synchronous audio multiplexed signal in one channel. The transmitted synchronous audio multiplexed signal is separated into a synchronous signal and an audio multiplexed signal, and the audio multiplexed signal is time-division demodulated in synchronization with the separated synchronous signal to reproduce a four-channel audio signal. An audio multiplexing system featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1082504A JPH02260932A (en) | 1989-03-31 | 1989-03-31 | Voice multiplex system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1082504A JPH02260932A (en) | 1989-03-31 | 1989-03-31 | Voice multiplex system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02260932A true JPH02260932A (en) | 1990-10-23 |
Family
ID=13776332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1082504A Pending JPH02260932A (en) | 1989-03-31 | 1989-03-31 | Voice multiplex system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02260932A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0576165A (en) * | 1991-09-11 | 1993-03-26 | Hitachi Ltd | Gate pulse transmission system |
| EP0836365A3 (en) * | 1996-10-11 | 2003-01-22 | Victor Company of Japan, Ltd. | System for processing audio surround signal |
| JP2008288910A (en) * | 2007-05-18 | 2008-11-27 | Sony Corp | Sound pickup device |
| JP2016126108A (en) * | 2014-12-26 | 2016-07-11 | 株式会社デンソー | Audio controller |
-
1989
- 1989-03-31 JP JP1082504A patent/JPH02260932A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0576165A (en) * | 1991-09-11 | 1993-03-26 | Hitachi Ltd | Gate pulse transmission system |
| EP0836365A3 (en) * | 1996-10-11 | 2003-01-22 | Victor Company of Japan, Ltd. | System for processing audio surround signal |
| JP2008288910A (en) * | 2007-05-18 | 2008-11-27 | Sony Corp | Sound pickup device |
| JP2016126108A (en) * | 2014-12-26 | 2016-07-11 | 株式会社デンソー | Audio controller |
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