自适应增量调制ADM的实现与Matlab仿真  

Implementation and Matlab Simulation of Adaptive Delta Modulation

作　　者：陶喆[1] 林财兴[1] 何绪兰[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《现代机械》2010年第6期59-62,共4页Modern Machinery

摘　　要：增量调制简称ΔM或DM,它是继PCM后出现的又一种模拟信号数字传输的方法,可看成是DPCM的一个重要特例。其目的在于简化语音编码方式。考虑到提高信噪比的关键就是在不出现严重过载噪声的同时能让普通量化噪声减弱,因此本文采取了一种基于时序逻辑电路和集成运算放大器来自适应产生可变台阶大小的ADM调制系统。Δ M or delta modulation was referred as DM,it is another method of analog signal transmission by digital signal after PCM and it can be regarded as an important special case of DPCM.The aim is to simplify the voice encoding.Taking into account that the key is to reduce the normal quantize noise without the serious overloaded noise,this paper adopts a ADM modulation system to generate the step based on the sequential logical circuit and integrated operational amplifier.

关 键 词：ADM 调制系统 时序逻辑电路 集成运算放大器 

分 类 号：TN941.4[电子电信—信号与信息处理]