ETSI TS 146 053-2001 数字蜂窝通信系统(第2+阶段).GSM增强型全速率(EFR)语音编解码器的ANSI-C代码.3GPP TS 46.053(版本4.0.0,第4次发布)
Digital Cellular Telecommunications System (Phase 2+); Ansi-C Code for the GSM Enhanced Full Rate (EFR) Speech Codec 3GPP TS 46.053 Version 4.0.0 Release 4