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jpeg压缩matlab源代码。由均匀量化和huffman编码组成,简洁易懂,jpeg compression matlab source code. By the uniform quantization and huffman coding components, concise and understandable
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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 len
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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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用matlab编A律13折线非均匀量化信噪比.m- non-uniform quantization noise ratio
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L3_1.m: 純量量化器的設計(程式)
L3_2.m: 量化造成的假輪廓(程式)
L3_3.m: 向量量化器之碼簿的產生(程式)
L3_4.m: 利用LBG訓練三個不同大小與維度的碼簿並分別進行VQ(程式)
gau.m: ML量化器設計中分母的計算式(函式)
gau1.m: ML量化器設計中分子的計算式(函式)
LBG.m: LBG訓練法(函式)
quantize.m:高斯機率密度函數的非均勻量化(函式)
VQ.m: 向量量化(函式)
L3
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采用matlab编写的关于当 L=64时,为求得在均匀量化时的最优步长-Prepared by the use of matlab when L = 64 when, in order to achieve the optimal uniform quantization step size at the time of
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通信原理中均匀量化方面的仿真,程序简单易懂,希望能加深你对量化的理解-Communication Theory in the uniform quantization in the simulation, the program easy to understand, hoping to deepen your understanding of quantitative
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This uniform quantization coded in matlab-This is uniform quantization coded in matlab
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They are the programs of uniform quantization and non-uniform quantization.
In digital signal processing, quantization is the process of approximating ("mapping") a continuous range of values (or a very large set of possible discrete values) by
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基于matlab的pcm系统的仿真之对语音信号的均匀量化编码-Matlab-based system simulation of the pcm speech signal uniform quantization coding
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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
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uniform quantization rgb matlab
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matlab程序实现均匀量化和非均匀量化的过程-matlab program to achieve a uniform quantization and non-uniform quantization process
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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
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通信原理中运用matlab实现信号的均匀量化-Uniform quantization to realize signal
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Non uniform quantization example in matlab
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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 qu
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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, amplitud
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