Silence compression
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"it provides an excellent way to remove Redundancy(or more aptly Recurrence).For efficient communication across network silence compression is preferred."It allows transmission bandwidth to be reduced to a significantly silence period.
Silence compression provides a way to squeeze redundancy out of sound files. The silence compression scheme is essential for efficient voice communication systems. It allows significant reduction of transmission bandwidth during a period of silence.
A silence compression scheme include a voice activity detection (VAD), a silence insertion descriptor (SID) and a comfort noise generator (CNG) module.
Silence compressor=VAD = SID + CNG
Parameters used for silence compression
- Threshold value
- The way to encode silence
- Threshold for recognizing start of silence
- An indication of when silence is over
- A parameter to get a threshold, which means that there is no silence until or unless there is three silence[vague] in the rows.
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