Description: 用matlab编写的ADPCM编码和解码.里面包括了编码和解码的m文件.The algorithm is based on IMA ADPCM.
-using Matlab prepared by the ADPCM encoding and decoding. They include coding and decoding m documents. The algorithm is based on IMA ADPCM. Platform: |
Size: 2048 |
Author:李一 |
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Description: 本程序可以对一个模拟信号进行数字化，使用的是PCM即脉冲编码调制，其结果是将样值转化为8位PCM编码。现今语音编码大多数采用这类编码方法-This procedure can be an analog signal to digital, using pulse code modulation or PCM, and the result is kind of value will be translated into eight PCM coding. Most of the current speech coding to adopt this type of coding method Platform: |
Size: 2048 |
Author:徐健 |
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Description: 基于自适应增量调制和线性增量调制的原理，用matlab实现LDM和ADM，并比较两者之间的优缺点-Based on adaptive delta modulation and linear delta modulation principle, using matlab to achieve LDM and ADM, and compare the advantages and disadvantages between the two Platform: |
Size: 1024 |
Author:张建喜 |
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Description: 用MATLAB实现PCM（脉冲调制）的编码，其中调制采用的是mu律算法模型，量化间隔可以自行选择-Using MATLAB realization of PCM (pulse modulation) encoding, in which modulation is used mu law algorithm model to quantify the interval may choose Platform: |
Size: 2048 |
Author:lijie |
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Description: 产生长度为1000的标准正太分布的随机信号，画出时域波形及频谱；
采用u=255的非均匀PCM编码，每符号为8bit，画输入-输出关系图；
计算信号量化噪声比（SQNR）；
信道误码率为10-3；
解码，并画出u律反变换后的信号时域波形及频谱。
扩展要求：
采用均匀PCM、量化级数可变、信道误码率可变。
- have a standard length of 1000 is too random signal distribution, draw time-domain waveform and frequency spectrum u = 255 using the non-uniform PCM encoding, each symbol for 8bit, drawing input- output relationship diagram calculated quantization noise signal than (SQNR) channel bit error rate of 10-3 decoder, and law to draw u the signal after the inverse transform time-domain waveform and frequency spectrum. Expansion of the requirements: uniform PCM, quantization level variable, a variable channel bit error rate. Platform: |
Size: 2048 |
Author:louzhu |
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Description: 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PCM两大类，对数PCM中，2Aμ律和律编码都已被定为国际标准。-Matlab simulation using pulse code modulation (PCM) and the A law, μ law PCM codec for voice compression process.
Pulse Code Modulation (PCM, Pulse Code Modulation) is an analog voice signal into digital signal encoding. The role of the encoder waveform is sampled signal sample quantization and coding. From the mathematical point of view, the process is to quantify the magnitude of the value of a continuous set of infinite number of maps into a finite number of discrete set of amplitude values , encoding is to use a set of binary digits, said after a limited number of these maps. By folding the International Standardization of PCM binary code, in line with long-distance telephone quality. According to the different quantitative methods, PCM can be divided into uniform quantization PCM PCM and the number of two categories, on the number of PCM in, 2Aμ law and legal codes have been designated as international standards. Platform: |
Size: 954368 |
Author:tanii |
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Description: 用matlab 实现的通信系统仿真 2DPSK，PCM，TDM的综合系统-Using matlab to achieve the communication system simulation 2DPSK, PCM, TDM integrated system Platform: |
Size: 9216 |
Author:张辟 |
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Description: 1、用Matlab绘制带通信号图形
2、用Matlab对模拟信源进行均匀量化
3、用Matlab编制一个函数实现均匀PCM量化编码，并计算量化噪声比(SQNR)
4、用Matlab对不同的量化级数计算出相应的量化噪声比-1, drawn using Matlab graphics bandpass
2, the simulation using Matlab source for uniform quantization
3, prepared using Matlab function to achieve a uniform PCM quantization coding, and calculate the quantization noise ratio (SQNR)
4, using Matlab on a different series to calculate the corresponding quantitative quantization noise ratio Platform: |
Size: 23552 |
Author:王员根 |
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Description: 运用MATLAB语言，进行非均匀PCM量化编码。产生一个长度为500，按N（0，1）分布的随机变量序列。用64量化电平和μ=255的μ律非线性，画出量化器的误差和输入输出关系。-Using MATLAB language, non-uniform quantization PCM coding. Produces a length of 500, according to the sequence of random variables N (0,1) distribution. With 64 quantization levels μ = μ-law nonlinearity 255, draw error and input-output relationship quantizer. Platform: |
Size: 2048 |
Author:陈思远 |
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Description: 运用MATLAB语言，进行非均匀PCM量化编码。产生一个长度为500，按N（0，1）分布的随机变量序列。用128量化电平和 的 律非线性，画出量化器的误差和输入输出关系。-Using MATLAB language, non-uniform quantization PCM coding. Produce a length of 500, according to the sequence of random variables N (0,1) distribution. With 128 quantization law nonlinear peaceful, draw the quantization error and input-output relationship. Platform: |
Size: 1024 |
Author:牙买加 |
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Description: Implementation and Signal to Quantize noise ratio (SQNR) in Pulse code modulation using Matlab. Also compared A-law, u-law, companding.-Implementation and Signal to Quantize noise ratio (SQNR) in Pulse code modulation using Matlab. Also compared A-law, u-law, companding. Platform: |
Size: 5120 |
Author:ajay |
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Description: pcm编码A律Simulink和MATLAB(PCM in the communication system to complete the voice signal digital function, and its implementation mainly includes three steps to complete: sampling, quantization, coding. The binary representation of time discrete, amplitude discrete and quantized signals is completed respectively. According to CCITT, in order to improve the performance of small signal quantization, using companding non-uniform quantization, there are two suggestions, respectively A law and the law of our country, using the A law, the A law compression complex, often using 13 line method for encoding, using non uniform quantization coding PCM.) Platform: |
Size: 32768 |
Author:面包不面
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