调度用数字录音系统中的语音压缩技术

Voice Compression Technology in Digital Recording System of Dispatch

论述了计算机数字录音技术中的语音压缩算法—SB-ADPCM(Sub Band-Adaptive Differential Pulse Code Modulation)方法。着重阐述了编码、解码原理,收发QMF,自适应量化及信号重构。应用该算法实现的智能数字录音系统已广泛用于调度行业中。

This paper develops a voice compress algorithm-SB-ADPCM (Sub Band-adaptive Differential Pulse Code Modulation). And the problems are discussed about coding , decoding , sending and receiving QMF, adaptive quantization and reconstructed singnal. The intelligent digital recording system with this method is widely used in dispatch of power.