ETSI TS 146 008-2004 数字蜂窝通信系统(第2+阶段).半速率语音.GSM半速率语音编解码器的性能特征.3GPP TR 46.008(版本6.0.0,第6次发布)
Digital cellular telecommunications system (Phase 2+); Half Rate Speech; Performance Characterization of the GSM Half Rate speech codec 3GPP TR 46.008 Version 6.0.0 Release 6