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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
- 积分：1
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initial_senstitive
混沌系统初值敏感性检查，指标为分叉迭代次数(initial sensitive check of chaotic map)
- 2012-05-09 11:01:26下载
- 积分：1
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channelencoding
完整的GSM信道编码 为话音信道的卷积编译码 还有交织(integrity of the GSM channel coding for voice channel convolution encryption also intertwined)
- 2007-03-14 04:46:07下载
- 积分：1
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课程作业时的最大似然（ML）准则开源程序
包括回归分析和概率统计，BP神经网络用于函数拟合与模式识别，包含特征值与特征向量的提取、训练样本以及最后的识别，是本科毕设的题目，GPS和INS组合导航程序，最大似然（ML）准则和最大后验概率（MAP）准则。
- 2023-09-04 17:05:03下载
- 积分：1
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AHP
层次分析方法，用于有多个方案和多个准则的情况下，选择出其中的最优方案(AHP, for there are more programs and a number of criteria in the case, choose the optimal solution which)
- 2011-07-18 13:47:23下载
- 积分：1
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fitting-of-a-polynomial
多项式线性拟合，根据给出的（x，y）值，给出多项式的系数值。(Presented in this paper, according to polynomial linear fitting (x, y) value of polynomial coefficient values.
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- 2013-08-14 09:49:33下载
- 积分：1
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Find_(Calibration)
it is a software ti localize wireless sensor network
- 2012-09-20 09:18:57下载
- 积分：1
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ga_bp
ga优化神经网权值&阈值程序。为了方便，我把几个matlab的程序都放在txt文件里，使用时，对照把txt内容复制进matlab即可(ga optimization neural network weights & threshold procedures. For convenience, I have several matlab programs on the txt file, use, control the content of the txt you copied into matlab)
- 2009-05-15 15:32:02下载
- 积分：1
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Matplotlib
介绍matplotlib编程的一本电子书籍，讲解生动，由浅入深。(An electronic book that introduces matplotlib programming. )
- 2012-05-05 11:08:22下载
- 积分：1
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origenal_transformation
code for origenal transformation
- 2010-01-04 20:31:23下载
- 积分：1
