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Configuring voice activity detection

Voice activity detection (VAD) separates an audio stream into time intervals that contain speech and the intervals where speech is absent. During speech pauses, the sound is not transmitted from the bridged radio.

VAD is controlled by the following T.Bridge settings:

VADProbStart

Determines the probability for distinguishing silence from voice, based on the sound volume threshold. Ranges from 0 to 100.

Increasing the value will result in ignoring the background noise, but may also cause the loss of quieter speech. Decreasing the value may result in false positives in case of loud background noised from the machinery or crowds.
The actual value should be determined empirically according to your working conditions. In normal outdoor conditions, you can start at 85 and tune the number by ear.

Setting this parameter to 0 disables voice detection (all audio is transmitted).

VADProbContinue

Determines the probability that the VAD will consider the voice is still being transmitted, based on the sound volume threshold. Ranges from 0 to 100.

Increasing the value will result in ignoring the background noise, but may also cause the loss of quieter speech. Decreasing the value may result in loud background noised from the machinery or crowds to be considered as continuous speech.
The actual value should be determined empirically according to your working conditions. In normal outdoor conditions, you can start at 70 and tune the number by ear.

Setting this parameter to 0 disables voice detection (once VAD is started, all audio is transmitted).