CVSD语音压缩的算法和程序流程.量阶δ能够自动地随输入信号平均斜率的大小而连续变化,译码输出信号实现了对输入信号的理想逼近,最后在可编程逻辑器件(FPGA)中实现了CVSD调制功能。-CVSD voice compression algorithm and the program flow. Volume bands　can automatically input signal with an average slope of the size of continuous change, decoder output signals to achieve the ideal input signal approximation, in the end programmable logic devices (FPGAs) to achieve the CVSD modulation functions.