实现了G.723.1语音压缩编码在数字对讲机基带系统的应用。其创新在于充分利用了DSP的处理能力以及CPLD硬件上的高速、高集成度和可编程性进行硬件电路设计,在对讲机频带和DSP资源有限的条件下,对G.723.1的定点C代码进行深度优化,最终在实际电路上,收端可以播放出发端传来的实时、连续和清晰的语音。 Implementation of G.723.1 voice compression coding in the digital walkie-talkie baseband system applications. Its innovation lies in making full use of the processing power of DSP and hardware design of high speed, high integration and programmability in CPLD hardware. Under the condition of limited frequency band of radio and DSP resources, the depth of fixed-point C code of G.723.1 Optimization, and ultimately in the actual circuit, the receiver can play the starting end of the real-time, continuous and clear voice.