pulse code modulationIn this paper, we present an approach for investigating the pulse code modulation for signals with various shape forms. We have developed an algorithm as well as its course of implementation in MATLAB and Octave environments. The software we have implemented makes it possible ...
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indx = dpcmenco(sig,codebook,partition,predictor)implements differential pulse code modulation to encode the vectorsig.partitionis a vector whose entries give the endpoints of the partition intervals.codebook, a vector whose length exceeds the length ofpartitionby one, prescribes a value for each pa...
Decode using differential pulse code modulation collapse all in pageSyntax sig = dpcmdeco(indx,codebook,predictor) [sig,quanterror] = dpcmdeco(indx,codebook,predictor) Description sig = dpcmdeco(indx,codebook,predictor) implements differential pulse code demodulation to decode the vector indx. The...
Decode using differential pulse code modulation collapse all in page Syntax sig = dpcmdeco(indx,codebook,predictor) [sig,quanterror] = dpcmdeco(indx,codebook,predictor) Description sig = dpcmdeco(indx,codebook,predictor)implements differential pulse code demodulation to decode the vectorindx. The ...
百度试题 结果1 题目解释脉码调制pulse code modulation(PCM) 的意义?相关知识点: 试题来源: 解析 答:脉码调制,一种调制方式,模拟信号被采样,然后将采样值进行量化和编码,用不同类型数目的脉冲和间隔构成信息元素。反馈 收藏
This MATLAB function returns the complex envelope of the modulation of the input message signal, x, using PAM and the alphabet size, M.
抽样定理是任何模拟信号数字化的理论基础,PCM编码就是建立在抽样定理基础之上的,PCM编码主要包括抽样、量化、编码三个步骤。 (1)抽样:在满足抽样定理的条件下,每隔固定的时间间隔取出模拟信号的采样值,把连续时间的模拟信号转换成离散时间连续幅度的抽样信号。 (2)量化:将抽样取得的离散时间连续幅度的抽样信号转换成离...
PCM(Pulse-code modulation)脉冲编码调制 在音频处理中,我们会经常听到PCM数据,那么什么是PCM数据呢? PCM数据就是模拟信号经过PCM以后的数字信号,PCM就是把音频信号由模拟信号(时间连续,取值连续)转为数字信号(时间离散,取值离散)的过程。数字信号有很多优点,因此一般传输的信号都是数字信号。
Pulse-code modulation 脉冲编码调制(Pulse Code Modulation,PCM),由A.里弗斯于1937年提出的,这一概念为数字通信奠定了基础,60年代它开始应用于市内电话网以扩充容量,使已有音频电缆的大部分芯线的传输容量扩大24～48倍。到70年代中、末期,各国相继把脉码调制成功地应用于同轴电缆通信、微波接力通信、卫星通信和...