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PCM编码实例。包括均匀量化编码,非均匀量化编码,及A率PCM编码。-PCM coding examples. Including uniform quantization coding, non-uniform quantization coding, and A PCM coding rate.
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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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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)
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均匀PCM量化和u律非均匀量化的对比效果分析实验.-Uniform quantization and u law PCM non-uniform contrast quantitative analysis of experimental results.
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均匀量化和非均匀量化在性能上存在着显著的差异,这种差异可以用信号通过量化器后的量躁比来反映出来。本程序用曲线表示了理论和实际两个方面下两种量化的量躁比。从而可观察他们的性能上的差别。-There are significant differences with the function between Uniform quantization and non-uniform quantization ,which can be quantified by SNR from the quant
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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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本程序计算HSV空间的非均匀量化直方图,空间维数为36柄-HSV space, the program calculates the histogram of non-uniform quantization, space dimension of 36 handle
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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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Non uniform quantization example in matlab
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产生一个幅度为1,频率为w=1的正弦序列,采用非均匀8级量化和16级量化(类似A律13折线的方法),在同一坐标系内绘出原始信号和量化信号的曲线,并计算量化的S/N-Generating an amplitude of 1 and a frequency of the sinusoidal sequence w = 1, the use of non-uniform quantization 8 and 16 quantization (similar to Method A-law broken
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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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