GSM-FR is the digital speech codec used in GSM digital mobile phone systems.
SPIRIT GSM-FR speech codec is an implementation of GSM 06.10 RPELTP
(Regular Pulse Excitation-Long Term-Prediction-Linear Predictive Coder) vocoder.
This codec operates at 13 kbps bit rate.
Features
Standard ETSI 1987
Bandwidth 200 Hz – 3,4 kHz
Bitrate: 13 kbit/sec
Sampling rate: 8 kHz
Simple application interface
Benefits
Highly optimized code ideal for resource constrained applications