SPIRIT iLBC is a speech codec suitable for robust voice communication over
IP networks. It is designed for narrowband speech and results in a payload bit
rate of 13.33 kbps for 30 ms frames and 15.20 kbps for 20 ms frames. The
codec enables graceful speech quality degradation in the case of lost frames,
which occurs in connection with lost or delayed IP packets.
Features
Operates at 13.3 / 15.2 kbps bitrate
Frame size 30 ms for 13.3kbps, and 20 ms for 15.2kbps
Voice quality exceeds G.729A and G.723.1
High robustness to packet loss
Low delay and high packet loss robustness for low-bit rate codecs
Start state encoding
Pitch enhancement
Packet loss concealment
Benefits
Highly optimized code ideal for resource constrained applications
