LPC-10
LPC-10 is implemented as per Federal Standard 1016.
Overview
- 3 different sampling rates: 8 kHz, 16 kHz, and 32 kHz (narrowband, wideband, and ultra-wideband)
- Speex encoding is controlled most of the time by a quality parameter that ranges from 0 to 10
- Possible to vary encoder complexity dynamically through through adjusting how lookup is performed
- Dynamically adjust its bit-rate to adapt to the complexity of the audio being encoded
- Voice activity detection (VAD) with comfort noise generation (CNG) to reproduce background noise
- Discontinuous transmission (DTX) mode to transmit only when speech is present or comfort noise parameters must be updated
- Perceptual enhancement by decoder which enhances sound quality subjectively (although not objectively)
- Algorithmic delay is 30ms in narrowband mode, 34ms in wideband mode)
Links
Audio Examples
PSQM/PSQM+ values
RFC 3551 - RTP Packetization
RTP Parameters
Site Map
