What Are Threshold Automixers?

- Jul 19, 2018-

Threshold automixers are based on noise gate development, and each channel has a noise gate that is either open or closed. The logic that determines whether a channel is open or closed can be determined simply based on a fixed threshold and a reference priority. The working principle of this type of automatic mixer is that the more the number of microphones is turned on, the lower the overall sound transmission gain before the feedback critical point.

The mixer has two problems and an advantage. 1. Since the noise gate is used in each channel, there will be an abnormal effect of chattering or intermittent, accompanied by the loss of the voice header. 2. The threshold must be formulated in such a way that it can be used throughout the execution of the conference. This makes setup and calibration more difficult. 3. The advantage is that the sound gain can be maximized when a single microphone is turned on, so that the maximum output level can be obtained before the feedback threshold.



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