When the PSP and LPC predictor are used respectively in an ADPCM coding system with 4 bits/sampie, a better reconstruction speech Can be got by means of PSP algorithm.

• 在一个采用4比特量化器的ADPCM编码系统中,进一步比较PSP预测器和LPC预测器时,也发现前者可获得更高的话音质量。