JPH0346452A - Voice conference equipment - Google Patents
Voice conference equipmentInfo
- Publication number
- JPH0346452A JPH0346452A JP18025589A JP18025589A JPH0346452A JP H0346452 A JPH0346452 A JP H0346452A JP 18025589 A JP18025589 A JP 18025589A JP 18025589 A JP18025589 A JP 18025589A JP H0346452 A JPH0346452 A JP H0346452A
- Authority
- JP
- Japan
- Prior art keywords
- voice
- echo
- audio
- speaker
- switch
- 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
- 230000005236 sound signal Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000002592 echocardiography Methods 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は音声会議装置に係わり、特に音声会議装置の音
声反響測定に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an audio conferencing device, and more particularly to audio echo measurement of an audio conferencing device.
従来の音声会議装置にあっては、室内における音声反響
測定を行うにあたって、音声会議装置のスピーカから白
色雑音の音声を出力し、その出力時点から室内で反射さ
れたその反響音が音声人力用マイクロフォンに入力され
る時点までの経過時間と白色雑音の減衰量を記憶してい
た。With conventional audio conferencing devices, when measuring voice reverberations in a room, a white noise voice is output from the speaker of the audio conferencing device, and from the point of output, the echoed sound reflected in the room is transmitted to a human voice microphone. The elapsed time and the amount of attenuation of the white noise were memorized until the time it was input.
上述した従来の音声会議装置では、室内における音声反
響測定時に、音声会！！Ｉ装置の音吉出力用のスピーカ
と音声入力用のマイクロフォンとを切り離していないた
めに、対向局側から話し声等の雑音がマイクロフォンか
ら入力された場合に、その雑音成分も音声反響測定中の
自局の音声会議装置のスピーカから出力されることとな
る。この対向局側から混入した雑音成分は、室内におけ
る音声反響測定結果の誤差成分となり、音声会議装置に
内蔵され室内反響音を打ち消す機能を有するエコーキャ
ンセラの性能を十分に満足させることができなくなり、
それ故、音声会議中にエコーが発生する原因となってい
た。With the conventional audio conference device described above, when measuring audio echoes in a room, the audio conference! ! Because the Otokichi output speaker of the I device is not separated from the voice input microphone, if noise such as a voice from the opposite station is input from the microphone, that noise component will also be present at the local station during voice echo measurement. will be output from the speaker of the audio conference device. This noise component mixed in from the opposite station becomes an error component in the indoor voice echo measurement results, making it impossible to fully satisfy the performance of the echo canceller built into the audio conferencing device and having the function of canceling the indoor echo sound.
Therefore, this caused echoes to occur during audio conferences.
本発明はこのような事情に鑑みてなされたものであり、
室内における音声反響測定を正確に行い得る音声会議装
置を提供することを目的とするものである。The present invention was made in view of these circumstances, and
It is an object of the present invention to provide an audio conference device that can accurately measure audio echoes indoors.
本発明は上述した目的を達成するために、対向局側から
の音声がスピーカから出力された際に、音声入力用マイ
クロフォンに検出された音声の室内における反響音を打
ち消すエコーキャンセラを備えた音声会議装置において
、室内における音声反響測定時に対向局側から自局側に
入力される音声信号を電気的に遮断する回路手段を設け
たことを特徴とするものである。In order to achieve the above-mentioned object, the present invention provides an audio conference system equipped with an echo canceller that cancels the echoes in the room of the audio detected by the audio input microphone when the audio from the opposite station is output from the speaker. The apparatus is characterized in that it is provided with a circuit means for electrically blocking the audio signal input from the opposite station to the local station when measuring the voice echo in a room.
本発明によれば、室内における音声反響測定中、対向局
側から自局側に音声信号が伝達されないので、音声反響
測定を正確に行うことができ、それ故、音声会議中にエ
コーが発生するのを防止することができる。According to the present invention, since no audio signal is transmitted from the opposing station to the own station during voice echo measurement indoors, voice echo measurement can be performed accurately, and therefore, echoes are not generated during an audio conference. can be prevented.
以下、本発明の実施例を図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明に係わる音声会議装置の一実施例の構成
を示したものである。同図において、音声会議装置１０
．２０は中継装置３０を介して接続されている。音声会
議装置１０は音声入力を行うためのマイクスフオン１０
０と、音声出力を行うためのスピーカ１０２と、室内の
反響音を打ち消すエコーキャンセラ１０４と、音声反響
測定を行うための雑音発生器１０６と、スイッチ１０８
．１１０とから構成されている。スイッチ１０８とスイ
ッチ１１０とは連動し、スイッチ１０８がＯＮになった
際にスイッチ１１０はＯＦＦとなる。FIG. 1 shows the configuration of an embodiment of an audio conference device according to the present invention. In the figure, an audio conference device 10
．． 20 are connected via a relay device 30. The audio conference device 10 includes a microphone 10 for inputting audio.
0, a speaker 102 for outputting audio, an echo canceller 104 for canceling echoes in the room, a noise generator 106 for measuring audio echoes, and a switch 108.
．． 110. The switch 108 and the switch 110 are interlocked, and when the switch 108 is turned on, the switch 110 is turned off.
また、中継装置３０は増幅器３００．３０２から構成さ
れている。Further, the relay device 30 includes amplifiers 300 and 302.
音声会議装置２０の構成も音声会議装置１０のそれと同
様であるので、説明を省略する。The configuration of the audio conference device 20 is also similar to that of the audio conference device 10, so a description thereof will be omitted.
上述した構成において、音声会議装置１０で室内音声反
響測定を行う際には、まずスイッチ１０８が開底され、
雑音発生器１０６よりエコーキャンセラ１０４を介して
スピーカ１０２に白色雑音信号が出力される。スピーカ
１０２より出力された白色雑音信号の音声１２は、室内
の壁１４等で反射され、その反響音がスピーカ１０２か
ら所定距離の位置に配設されたマイクロフォン１００に
入力され、マイクロフォン１００よりエコーキャンセラ
１０４に前記した反響音の電気変換信号が出力される。In the above-described configuration, when performing indoor audio echo measurement with the audio conference device 10, the switch 108 is first opened,
A white noise signal is output from the noise generator 106 to the speaker 102 via the echo canceller 104. The sound 12 of the white noise signal outputted from the speaker 102 is reflected by the walls 14 in the room, and the reflected sound is input to the microphone 100 disposed at a predetermined distance from the speaker 102. At 104, the electrical conversion signal of the reverberated sound described above is output.
エコーキャンセラ１０４では、雑音発生器１０６から出
力される白色雑音信号の音声がスピーカ１０２から出力
される時点からその反響音１２がマイクロフォン１００
に入力される時点までの経過時間、およびスピーカから
出力される白色雑音信号の音声の減衰量が記憶される。In the echo canceller 104, from the time when the sound of the white noise signal outputted from the noise generator 106 is outputted from the speaker 102, the echoed sound 12 is transmitted to the microphone 100.
The elapsed time up to the time when the white noise signal is input to the speaker and the amount of attenuation of the sound of the white noise signal output from the speaker are stored.
その際に、スイッチ１０８がＯＮになるのに連動してス
イッチ１１０がＯＦＦとなり、この結果、対向局側の音
声会議装置２０からの入力信号が遮断される。したがっ
て、音声反響測定時に対向局側の音声会議装置２０にお
けるマイクロフォン２００から入力される話し声２２等
の雑音が遮断され、エコーキャンセラ１０の誤測定を回
避することができる。At this time, the switch 110 is turned off in conjunction with the switch 108 being turned on, and as a result, the input signal from the audio conference device 20 on the opposite station side is cut off. Therefore, noise such as the speaking voice 22 inputted from the microphone 200 of the audio conference device 20 on the opposing station side is blocked during voice echo measurement, and erroneous measurements by the echo canceller 10 can be avoided.
以上説明したように本発明では、エコーキャンセラを備
えた音声会議装置において、室内における音声反響測定
時に対向局側から自局側に入力される音声信号を電気的
に遮断する回路手段を設けるよう゛に構成したので、本
発明によれば音声反響測定を正確に行うことができ、そ
れ故、音声会議中にエコーが発生するのを防止すること
ができる。As explained above, in the present invention, an audio conference device equipped with an echo canceller is provided with circuit means for electrically blocking audio signals input from the opposite station to the local station when measuring voice echoes indoors. Therefore, according to the present invention, it is possible to accurately measure voice echoes, and therefore, it is possible to prevent echoes from occurring during a voice conference.
第１図は本発明に係わる音声会議装置の一実施例の構成
を示すブロック図である。
１０．２０・・・・・・音声会議装置、３０・・・・・
・中継装置、
１００．２００・・・・・・マイクロフォン、１０２．
２０２・・・・・・スピーカ、１０４．２０４・・・・
・・エコーキャンセラ、１０６．２０６・・・・・・雑
音発生器、１０８．１１０．２０８．２１０・・・・・
・スイッチ。FIG. 1 is a block diagram showing the configuration of an embodiment of an audio conference device according to the present invention. 10.20... Audio conference device, 30...
・Relay device, 100.200...Microphone, 102.
202...Speaker, 104.204...
...Echo canceller, 106.206...Noise generator, 108.110.208.210...
·switch.
Claims (1)
音声入力用マイクロフォンに検出された前記音声の室内
における反響音を打ち消すエコーキャンセラを備えた音
声会議装置において、室内における音声反響測定時に対
向局側から自局側に入力される音声信号を電気的に遮断
する回路手段を設けたことを特徴とする音声会議装置。When the audio from the opposite station is output from the speaker,
In an audio conference device equipped with an echo canceller that cancels the indoor echo of the voice detected by the audio input microphone, the audio signal input from the opposite station to the local station is electrically transmitted when measuring the indoor voice echo. An audio conference device characterized in that it is provided with circuit means for interrupting the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18025589A JPH0346452A (en) | 1989-07-14 | 1989-07-14 | Voice conference equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18025589A JPH0346452A (en) | 1989-07-14 | 1989-07-14 | Voice conference equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0346452A true JPH0346452A (en) | 1991-02-27 |
Family
ID=16080065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18025589A Pending JPH0346452A (en) | 1989-07-14 | 1989-07-14 | Voice conference equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0346452A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008021140A (en) * | 2006-07-13 | 2008-01-31 | Hitachi Omron Terminal Solutions Corp | Paper sheet handling apparatus |
-
1989
- 1989-07-14 JP JP18025589A patent/JPH0346452A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008021140A (en) * | 2006-07-13 | 2008-01-31 | Hitachi Omron Terminal Solutions Corp | Paper sheet handling apparatus |
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