6 Series: CODECs

Full Rate Speech Processing Functions
Half Rate Speech Processing Functions
Half Rate Speech: ANSI-C Code for GSM Half Rate Speech Codec
Half Rate Speech: Test Sequence for GSM Half Rate Speech Codec
Half Rate Speech; Performance Characterization of the GSM Half Rate speech codec
Full Rate Speech Transcoding
Substitution and Muting of Lost Frames for Full Rate Speech Channels
Comfort Noise Aspects for Full Rate Speech Traffic Channels
Half Rate Speech Transcoding
Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels
Comfort Noise Aspects for Half Rate Speech Traffic Channels
Discontinuous Transmission (DTX) for Full Rate Speech Traffic Channels
Voice Activity Detection (VAD)
Discontinuous Transmission (DTX) for Half Rate Speech Traffic Channels
Voice Activity Detection (VAD) for Half Rate Speech Traffic Channels
GSM Enhanced full rate speech processing functions: General description
ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec
Test sequences for the GSM Enhanced Full Rate (EFR)
Performance characterisation of the GSM EFR Speech Codec
Enhanced full rate speech transcoding
Substitution and muting of lost frames for encanced full rate speech traffic channels
Comfort noise aspects for Enhanced Full Rate (EFR) speech traffic channels
Adaptive Multi-Rate speech processing functions; General description
Adaptive Multi Rate (AMR) speech
⇒ ANSI-C code for the AMR speech codec
Test sequences for the GSM Adaptive Multi Rate (AMR) speech codec
Performance characterization of the GSM Adaptive Multi-Rate (AMR) speech codec
Adaptive Multi-Rate (AMR) speech codec; Study phase report
Minimum Performance Requirements for Noise Suppresser Application to the AMR Speech Encoder
Results of the AMR noise suppression selection phase
Discontinuous Transmission (DTX) for encanced full rate speech traffic channels
Voice Activity Detection (VAD) for enhanced full rate speech traffic channels
Subjective tests on the interoperability of the HR/FR/EFR speech codecs; single, tandem and tandem free operation
Adaptive Multi-Rate speech transcoding
Substitution and muting of lost frames for AMR speech traffic channels
Comfort noise aspects for Adaptive Multi-Rate speech traffic channels
Discontinuous Transmission (DTX) for Adaptive Multi-Rate speech traffic channels
Voice Activity Detector (VAD) for Adaptive Multi Rate (AMR) speech traffic channels