search for: nonspeech

...; > Well, the best way is probably to turn VAD *and* DTX on. Then when > there's silence, the speex_encode function will return zero, which means > you don't have to transmit the frame (normally, it returns 1). If the decoder returns sample values of '0' when it detects a nonspeech event, the end user will be inclined think the connection is broken, because then also the background noise suddenly stops. In other speech codecs, when the VAD detects nonspeech, the decoder inserts 'comfort noise', so that the end user doesn't suddenly hear a complete silence, but ra...

hi, How do i detect whether there is silence in media using speex? Is there any API which decides that the audio data only contains silence? Basically i will have PCM linear data, I want to know whether it is complete silence. Is it that during encoding speex_bits_write will return a lesser number if the audio at byte_ptr contains silence? thanx, Rahul -- Rahul Arvind Jadhav