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给出了一种在128kb·s-1码率具有较好听觉质量的宽带语音信号（7）（kHz）压缩编码算法．当抽样频率为16kHx时：输入信号通过小波变换分成高子带和低子带信号．低子带信号采用了经改进的码激励线性预测（CELP）方案，高子带信号以自适应增量调制（ADM）压缩．
A wideband speech signal (7) (kHz) compression coding algorithm with good auditory quality at a bit rate of 128kb · s-1 is presented. When the sampling frequency is 16kHx: The input signal is divided into high-subband and low-subband signals by wavelet transform. The low subband signals use an improved Code Excited Linear Prediction (CELP) scheme and the high subband signals are compressed by Adaptive Delta Modulation (ADM).