Different from normal IWR schemes, the IWR system in this paper does not implement a speech analysis unit, but to borrow the speech analysis unit, the GSM EFR voice coder, from the communicating system to perform the speech analysis.

• 与一般方案不同，本方案不进行独立的语音分析，而是借用GSM EFR声码器作为语音分析单元对语音进行分析，对于分析后得到的语音特征，采用DTW算法进行处理。