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智能会议系统中的反馈抑制器的使用方法
更新时间:2022-08-31
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反馈抑制器的主要作用是抑制由于音箱声音传到话筒而引起的声反馈啸叫,所以必须使它成为话筒信号和必经之路才能达到完全、有效的抑制声反馈啸叫的目的。从目前的应用情况看,反馈抑制器的连接方法大致有3种。智能会议系统厂家为您讲解一番。
The main function of the feedback suppressor is to suppress the acoustic feedback howl caused by the sound from the speaker to the microphone. Therefore, it must be made the microphone signal and the only way to achieve the purpose of completely and effectively suppressing the acoustic feedback howl. According to the current application, there are roughly three connection methods for feedback suppressors. The intelligent conference system manufacturer will explain it to you.
串接在扩声系统主通道均衡器后压限器前,这是一种比较普遍采用的连接方法,连接非常容易,用一台反馈抑制器就可以完成抑制声反馈的任务。这种接法可能会对再现声音质量有所影响,当然这些影响都有相应的解决办法。
It is connected in series in front of the pressure limiter behind the equalizer of the main channel of the sound reinforcement system. This is a commonly used connection method. It is very easy to connect. The task of suppressing acoustic feedback can be completed with a feedback suppressor. This connection may have an impact on the reproduction sound quality. Of course, there are corresponding solutions to these effects.
一、是可能会对音乐节目源声音信号产生破坏。由于反馈抑制器串接在主通道中,话筒信号和音乐节目源信号都要同时通过它,在反馈抑制器衰减反馈频率时,就会造成音乐节目源声音在这些频率上的不足。
1、 It may damage the sound signal of the music program source. Since the feedback suppressor is connected in series in the main channel, the microphone signal and the music program source signal must pass through it at the same time. When the feedback suppressor attenuates the feedback frequency, the music program source sound will be insufficient in these frequencies.
但在实践中发现,顿厂笔1100笔反馈抑制器对音乐节目源声音的影响级小,用加与不加反馈抑制器的方法几乎无法察觉到音乐声音的变化。
However, in practice, it is found that the dsp1100p feedback suppressor has a small influence on the source sound of the music program, and it is almost impossible to detect the change of the music sound with or without the feedback suppressor.
究其原因,乃是由于顿厂笔1100笔衰减的频带宽度和衰减量由声反馈啸叫的频带宽度和啸叫程度决定,宽度衰减得恰如其分,没有过多地衰减频率成分,所以对声音破坏级小。
The reason is that the band width and attenuation amount of the dsp110p attenuation are determined by the band width and the howling degree of the acoustic feedback howl. The width is appropriately attenuated and the frequency component is not excessively attenuated, so the damage level to the sound is small.
智能会议系统
即使对声音有所影响也无妨,可以在调音台的音乐节目源路根据顿厂笔1100笔反馈抑制器的显示,用参量均衡器将衰减频带宽度宽且衰减得多的频率适当提升即可。
Even if the sound is affected, it is OK to use the parametric equalizer to appropriately increase the frequency with a wide attenuation band width and much attenuation according to the display of the dsp1100p feedback suppressor on the music program source channel of the mixing station.
二、是可能会对话筒声音信号有所影响。不同的话筒由于拾音特性和频率的响应不同,其生产的声反馈啸叫频率也会有所不同。
2、 Yes, it may affect the microphone sound signal. Because different microphones have different pickup characteristics and frequency response, the acoustic feedback howling frequency produced by them will also be different.
假如一只话筒的声反馈啸叫频率为315贬锄,另一只话筒的声反馈啸叫频率为1办贬锄,用反馈抑制器抑制啸叫时,会将315贬锄和1办贬锄同时都衰减掉,结果就会造成315贬锄啸叫的话筒1办贬锄不足,1办贬锄啸叫的话筒315贬锄不足。这个问题,只要在调音台话筒路将不足频率进行适当补偿就可以解决了。
If the acoustic feedback howling frequency of one microphone is 315hz and the acoustic feedback howling frequency of the other microphone is 1kHz, when the feedback suppressor is used to suppress the howling, both 315hz and 1kHz will be attenuated at the same time. As a result, the microphone with 315hz howling will be 1kHz insufficient and the microphone with 1kHz howling will be 315hz insufficient. This problem can be solved as long as the insufficient frequency is properly compensated in the microphone circuit of the mixer.
智能会议系统中的反馈抑制器的使用方法就讲解完毕了,您对此有什么疑问可以随时来我们网站咨询了解!
The usage of the feedback suppressor in the intelligent conference system has been explained. If you have any questions, please come to our website at any time Consult and understand!

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