In this system, continuously variable slope delta modulation ( CVSD ) is used to change the analogy signal into digital, GFM is used to modulate the signal, FDMA, PLL frequency synthesizer. 这种系统采用连续可变斜率增量调制(CVSD)来实现语音信号的编码、GFM调制解调方式、FDMA、PLL频率合成器技术。
Implementation of a Continuously Variable Slope Delta Modulation Codec 连续可变斜率增量调制编解码器的设计
Design of a Wireless Voice System Based on Continuously Variable Slope Delta Modulation 基于CVSD编码的无线语音系统方案的设计
The principle of the encoder and decoder based on continuously variable slope delta ( CVSD ) modulation is briefly described. 简要介绍了连续可变斜率增量(CVSD)调制的原理。