Introduction - If you have any usage issues, please Google them yourself
ETSI EN 300 724 V8.0.1 (2000-11)
Digital cellular telecommunications system (Phase 2+) (GSM)
ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.53 version 8.0.1 Release 1999)
en_300724v080001p.pdf(官方文档)
en_300724v080001p0.zip(官方源代码)
ETSI EN 300 725 V8.0.1 (2000-11)
Digital cellular telecommunications system (Phase 2+) (GSM)
Test sequences for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.54 version 8.0.1 Release 1999)
en_300725v080001p.pdf(官方文档)
en_300725v080001p0.zip(官方源代码)