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pcm
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
编码:以上述信号为例,实现A律的13折线近似法及国际标准PCM对数A律量化编码。(Pulse code modulation (PCM) to achieve
PCM technology programming three processes: sampling, quantization and coding.
Sample: low-pass continuous signal sampling to x = sin (200* t) m = x./(200* t) m = m.* m an example low-pass sampling theorem, draw the signal, frequency graphics bandpass sampling continuous signals to x = sin (20* t) m = x./t an example bandpass sampling theorem, draw the signal, frequency graph.
Quantization: uniform quantization, in order to realize the magnitude of sinusoidal signal as an example for the 64 level uniform quantization non-uniform quantization, input A law PCM encoder sine signal, the sampling sequence, to be PCM encoded, the encoder is given The output code sequence
Code: A Case Study of the signal to achieve the 13 A line approximation law and international standards on the number of A law PCM coding quantization.)
- 2010-05-31 14:35:33下载
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lle_and_pca
实现lle和pca的matlab编程,主要目的是比较lle和pca这两个高维数据降维方法的性能,各有所长。(Use matlab to realise lle and pca ,the purpose is to compare lle and pca,which reduce high dimension data to low data dimension,and each has advantage!)
- 2011-10-27 10:16:24下载
- 积分:1
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smets
dempster shafer fusion
- 2012-09-08 06:41:09下载
- 积分:1
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article-2190_2
Algorithms for Digital Image Steganography
via Statistical Restoration
- 2014-01-24 15:18:01下载
- 积分:1
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soundexample
Realtime sound acquisiton and processing using matlab
- 2010-08-31 19:22:26下载
- 积分:1
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mode
非常齐全的数字通信调制源代码。对于初学数字通信仿真的人有很大帮助!(Very complete source code modulation digital communication. For the beginner digital communication simulation of great help to the people!)
- 2010-12-08 16:28:26下载
- 积分:1
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xiugaitrack
视频 跟踪 修改的程序 关于视频的目标跟踪(Video tracking procedures for amendment of the video target tracking)
- 2012-06-02 16:51:31下载
- 积分:1
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threelevel_OK
三电平仿真模型,相对两电平谐波更小,极有参考价值(Tri-level simulation model of two level harmonic smaller, relatively great reference value)
- 2013-08-21 23:10:56下载
- 积分:1
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Newton
This is a Matlab code for Newton method used in numerical methods to solve linear equations .
- 2013-12-09 05:05:46下载
- 积分:1
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Lor_Poincare
绘制庞加莱截面图的程序。先通过solveLor.m来求出一系列点,然后代入Poincare_section 程序绘制庞加莱截面。
通过观察Poincare截面上截点的情况可以判断
是否发生混沌:当Poincare截面上有且只有一个不动点或少数离散点时,运动是周期的;当Poincare截面上是一封闭曲线时,运动是准周期的 当Poincare截面上是一些成片的具有分形结构的密集点时,运动便是混沌。 (Poincare section drawing program. First obtained by solveLor.m to a series of points, and then drawn into the program Poincare Poincare section. By observing the situation on the Poincare section cut points can determine whether chaos occurs: When there is only one fixed point or a few discrete points on the Poincare section, the motion is periodic When is a closed curve on the Poincare section, the motion is quasi- When is the point of having a dense fractal structure on some stretches of the Poincare section, the motion is chaotic period.)
- 2014-03-22 18:33:53下载
- 积分:1