更新時(shí)間：2022-09-22
文章來源：http://gulfbaader.com/
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會議音響在使用過程中要避免受到哪些影響？音頻信號在傳輸過程中造成的干擾多種多樣，常見的有電源干擾，設(shè)備間干擾和光干擾。下面
山東會議室音響廠家為您解說。
What impacts should be avoided during the use of conference audio? There are many kinds of interference caused by audio signal during transmission, including power interference, interference between devices and optical interference. Next, Shandong conference room audio manufacturer will explain to you.
1.電源干擾。電源接地不良，設(shè)備之間的接地接觸不良以及設(shè)備之間的阻抗失配，未經(jīng)“純化”處理的設(shè)備電源，音頻電纜和交流電纜鋪設(shè)在同一根管子，同一溝槽或同一橋中，都會造成混亂干擾到音頻信號，形成低頻交流“嗡嗡”聲。
1. Power interference. Poor grounding of power supply, poor grounding contact between equipment and impedance mismatch between equipment, equipment power supply without "purification" treatment, audio cable and AC cable laid in the same pipe, the same trench or the same bridge will cause confusion and interference to audio signal, forming low-frequency AC "buzz" sound.
2.設(shè)備之間的干擾。“嘯叫”是由揚(yáng)聲器和麥克風(fēng)之間的正反饋引起的。主要原因是麥克風(fēng)離揚(yáng)聲器太近或麥克風(fēng)指向揚(yáng)聲器。聲波延遲會產(chǎn)生“空聲”。
2. Interference between equipment. The "howling" is caused by the positive feedback between the speaker and the microphone. The main reason is that the microphone is too close to the speaker or the microphone points to the speaker. The acoustic delay will produce "empty sound".
如果麥克風(fēng)同時(shí)拾取聲源信號和放大后的信號，或者兩個(gè)麥克風(fēng)與聲源的距離不同，則拾取來自同一聲音源的信號，或者一個(gè)麥克風(fēng)拾取聲音放大后的另一個(gè)麥克風(fēng)的信號恢復(fù)將有相應(yīng)的距離差并造成延遲。當(dāng)這些信號疊加時(shí)，某些頻率分量會相互抵消，從而形成“空聲”。
If the microphone picks up the sound source signal and the amplified signal at the same time, or if the distance between two microphones and the sound source is different, pick up the signal from the same sound source, or if one microphone picks up the sound and amplifies the signal of another microphone, there will be a corresponding distance difference and delay. When these signals are superimposed, some frequency components will cancel each other, thus forming "empty sound".
3.光線干擾。如果將鎮(zhèn)流器用于會場內(nèi)間歇性的照明燈，則在激發(fā)燈時(shí)會產(chǎn)生高頻輻射，并且會通過麥克風(fēng)及其導(dǎo)線串入，并發(fā)出“咔嗒聲”。聲音“吱吱”的聲音；另外，來自外部的高頻電磁干擾也會引起干擾。
3. Light interference. If the ballast is used for intermittently activated lamps in the venue, high frequency radiation will be generated when the lamp is excited, and it will be connected through the microphone and its wires, and a "click" will be generated. The sound of "squeaking"; In addition, high-frequency electromagnetic interference from outside will also cause interference.
電視會議的聲音恢復(fù)應(yīng)基于聲學(xué)的理論知識，根據(jù)實(shí)際情況的不同，靈活地調(diào)節(jié)混音器和均衡器，對聲音進(jìn)行處理和美化，彌補(bǔ)聲場的缺陷，創(chuàng)造理想的聲學(xué)效果。
The sound recovery of video conference should be based on the theoretical knowledge of acoustics. According to the actual situation, the mixer and equalizer should be flexibly adjusted to process and beautify the sound, make up the defects of the sound field, and create ideal acoustic effects.
適當(dāng)調(diào)整壓縮量遇到突然的大峰值信號時(shí)，限制器不會過載且不會失真，同時(shí)，有必要長時(shí)間避免壓縮限制器處于壓縮狀態(tài)，以使聲音連接順暢而圓滑。
Properly adjust the compression amount. When encountering a sudden high peak signal, the limiter will not be overloaded and distorted. At the same time, it is necessary to avoid the compression limiter from being in the compression state for a long time to make the sound connection smooth and smooth.
What impacts should be avoided during the use of conference audio? The above is the answer to the question. If you don't know anything about it, please come to our website at any time http://gulfbaader.com Consult!
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