GSM 06.53_增强全速率话音处理C代码 GSM 06.54_增强全速率测试序列 GSM技术规范目录_GSM 06系列_话音编码规范.pdf-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 (GS