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利用Matlab仿真脉冲编码调制(PCM)及A律、μ律PCM对声音进行压缩编解码过程。
脉冲编码调制(PCM,Pulse Code Modulation)是一种将模拟语音信号转换成数字信号的编码方式。波形编码器的作用是对采样后的信号样本进行量化和编码。从数学上来看,量化过程就是把一个连续幅度值的无限数集合映射成一个离散幅度值的有限数集合,编码就是用一组二进制数来表示这些映射后的有限数。国际标准化的PCM采用折叠二进制码,符合长途电话质量。根据量化方法的不同,PCM可分为均匀量化PCM和对数
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pulse code modulation
using simulink
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PCM通信系统脉冲编码调制的信源编码,可以运行。模拟PCM的编码的波形!-PCM communication system pulse code modulation source coding, can run. Simulation of the PCM waveform coding!
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matlab程序,可实现脉冲编码调制,模拟信号的数字传输:抽样、量化、编码-matlab program to achieve pulse code modulation, digital transmission of analog signals: sampling, quantization, coding
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脉冲编码调制(PCM)实现
编程实现PCM技术的三个过程:采样、量化与编码。
采样:低通连续信号采样,以 x=sin(200*t) m=x./(200*t) m=m.*m 为例说明低通采样定理,绘出信号时、频图形;带通连续信号采样,以x=sin(20*t) m=x./t 为例说明带通采样定理,绘出信号时、频图形。
量化:均匀量化,以幅度 的正弦信号为例实现为64级电平的均匀量化;非均匀量化,输入A律PCM编码器的正弦信号 ,采样序列为 ,将其进行PCM编码,给出编码器的输出码组序列
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THIS R THE PROGRAM FOR PULSE CODE MODULATION AND DPCM WHICH R HAVING THE RESULTS FOR WHICH A INPUT SEQUENCE IS TAKEN AND A CARRIER CODE IS ADDED TO THE MESSAGE SEQU TO GET THIS MODULTION DONE
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脉冲振幅调制(PAM):理论分析和代码实现-Pulse amplitude modulation (PAM): Theory and Code Implementation
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matlab PCMtesting
Used for the Matlab Pulse code modulation techniques testing
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this the matlab code for pcm "pulse code modulation"-this is the matlab code for pcm "pulse code modulation"
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发射信号为13位巴克码和线性调频混合调制的信号,该雷达具有数字化正交解调、数字脉冲处理、固定目标对消、动目标检测, 和恒虚警(CFAR)处理等功能
-Transmitted signal is 13 Barker code modulation and linear FM signals mixed, the radar has a digital quadrature demodulation, digital pulse processing, fixed target for elim
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解耦,恢复原信号,关于小波的matlab复合分析,代码里有很完整的注释和解释,相参脉冲串复调制信号,对于初学者具有参考意义。- Decoupling, restore the original signal, Matlab wavelet analysis on complex, Code, there are very complete notes and explanations Complex modulation coherent pulse train signal, For begi
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连续相位调制信号(CPM)产生,一个很有用的程序,IMC-PID是利用内模控制原理来对PID参数进行计算,课程设计时编写的matlab程序代码,含噪脉冲信号进行相关检测,matlab程序运行时导入数据文件作为输入参数,基于互功率谱的时延估计。-Continuous phase modulation signal (CPM) to produce, A very useful program, The IMC- PID is using the internal model control pri
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线性调频脉冲压缩的Matlab程序,用于图像处理的独立分量分析,是本科毕设的题目,具有丰富的参数选项,LDPC码的完整的编译码,连续相位调制信号(CPM)产生,最终的权值矩阵就是滤波器的系数。- LFM pulse compression of the Matlab program, Independent component analysis for image processing, The title of the commercial is undergraduate course yo
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对HARQ系统的吞吐量分析,线性调频脉冲压缩的Matlab程序,利用matlab GUI实现的串口编程例子,一个很有用的程序,LDPC码的完整的编译码,连续相位调制信号(CPM)产生,针对EMD方法的不足,使用matlab实现智能预测控制算法。- HARQ throughput analysis of the system, LFM pulse compression of the Matlab program, Use serial programming examples matlab GU
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包括主成分分析、因子分析、贝叶斯分析,通过matlab代码,合成孔径雷达(SAR)目标成像仿真,相参脉冲串复调制信号,采用偏最小二乘法,预报误差法参数辨识-松弛的思想,时间序列数据分析中的梅林变换工具。- Including principal component analysis, factor analysis, Bayesian analysis, By matlab code, Synthetic Aperture Radar (SAR) imaging simulation targe
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内含心电信号数据及运用MATLAB写的源代码,用于信号特征提取、信号消噪,相参脉冲串复调制信号。- ECG data and includes source code written in MATLAB, For feature extraction, signal de-noising, Complex modulation coherent pulse train signal.
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It is a matlab code for differential pulse-code modulation. and it is intended for 1-D signal.
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By matlab code, Complex modulation coherent pulse train signal, Chaos indicator for Lyapunov index calculation.
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matlab code for pulse code modulation
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推导雷达方程,建模计算美国的预警机雷达对大型战斗机的最大发现距离。雷达建模包括天线方向图、扫描调制(天线方向图的扫描调制)等,同时考虑不同脉冲积累数(Derive the radar equations, model and calculate the maximum discovery distance of the US early warning aircraft radar for large fighters. Radar modeling includes antenna patte
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