Hi list, I have a client with a strange requirement: putting a noise gate on the Asterisk channel. For those who are not familiar with them, noise gates are used in musical instruments to avoid entering low-level noise into the amp system. What they basically do is, they measure the volume of the channel, and when it's too low they just let the channel close, i.e send perfect silence, therefore killing low-level buzzing sounds. My client has such a need because they have analog voice-operated push-to-talk half-duplex devices on the other side, and low level noise from the Asterisk side will keep the channel open. I will try diminishing the TXgain, but I wondered if there were other options too. l.
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