Connection method of feedback suppressor in conference sound system

There are many ways to connect the feedback suppressor in the conference audio system. Now, Xiaobian will give you a list of the connection methods.

1. It is connected in series to the sound system like peripheral devices such as equalizers. The advantage of this connection is that it is simple to connect and operate, and is suitable for relatively simple systems. But the disadvantage is: this connection method also affects other source signals passing through the feedback suppressor when suppressing the microphone sound feedback; for example, we connect a feedback suppressor in series to the main channel output of the mixer, then this time The feedback suppressor can only suppress the acoustic feedback of this signal channel, and it does not work for other channels such as AUX output, group output, etc.

2. Use the INS insertion/insertion interface in the mixer channel to connect the feedback suppressor in the corresponding channel. The advantage of the connection is that the feedback suppressor can be adjusted to the maximum extent, so that the conference audio does not need to be taken care of. Affect other sources. The disadvantage is that with this connection method, a feedback suppressor can control the two channels of the mixer at most, and the device cannot be fully utilized.

3. The INS insertion/insertion interface in the mixer group is used to connect the feedback suppressor in the corresponding grouping channel. The advantage of the connection is that the microphones programmed into the group can be processed centrally without affecting To other sources. The disadvantage is: it is easy to produce misoperations. For example, a mixer 1-8 is a microphone. We have programmed these 8 microphones into the 1-2 group of the mixer for centralized processing, but if the microphone is 1-8. Anyway is accidentally programmed into the 3-4 group. If there is no feedback suppressor in the 3-4 group, then there is a possibility of acoustic feedback. Therefore, you must use this method if you know the mixer well and operate it very seriously. In summary, because this method can make full use of the feedback suppressor, it is also the most widely used connection method.

4. If there are some mixers in the grouping channel that do not have an INS plug-in/plug-out interface, we don't want to connect the feedback suppressor in the main output channel, and want to centrally control the microphone, then we can use a kind of It doesn't look very standard, and there are no methods in the textbook. For example, a mixer 1-8 is a microphone. We can send the volume of the 8 microphones to the feedback suppressor through the corresponding AUX, if it is AUX5- 6 channels. After being processed by the feedback suppressor, it flows back to the corresponding channel of the mixer, if it is 23-24 channels. This connection method is similar to the connection effect. It is required that the AUX should be set to be sent after the fader. It is also required that the AUX5-6 in the 23-24 channel cannot be turned on again, otherwise a signal loop will be generated; but the difference is this time. The volume of the 1-8 channel cannot be programmed into any grouping and main channel, that is, the LR of the main channel, and the corresponding buttons of the grouping channel 1-2, 3-4, 5-6... single channel do not darken, let this The volume of the 8 channels is transmitted purely only through the AUX5-6, and then mixed into the mixer through the 23-24 channels, and finally the mixer is output through the corresponding signal channel. This can also play a very good role, but I feel that this method is a bit deviant, but my point of view has always been emphasized: flexible and practical.

5. Another method in the conference audio installation process is to use two mixers, one dedicated to the microphone, processed by the feedback suppressor and then the volume is input to another mixer. This has the advantage of maximizing the centralized control of the microphone and completely avoiding interference with other sources; the disadvantage is that the microphone used exclusively for processing the microphone is usually a small mixer, and its quality is generally not as good as that of the big station. And the function is not rich enough, so the processing quality may not be ideal; there are two mixers that are a bit cumbersome to operate, and unskilled sound engineers are often confused.

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