The final 5.15? kbit/s low bit rate wideband coder can enhance the trueness of speech,the discriminability of consonants and the recognizability of the speaker. The coding result is close to that of AMR-WB 6.6?

• 宽带语音的高、低频分别由特征波形内插编码和频带扩展算法恢复；由此形成了5.；15 kbit/s的低速率宽带语音编码器；增强了语音真实感、辅音的辨析度及对话者的识别度；宽带语音编码质量接近AMR-WB的6