P3-2

运用FFT技术来综合和分析电话拨号的过程，matlab来分解了这一过程，希望能提供帮助( TOUCHTONE Use FFT to synthesize and analyze telephone dialing The dual tone multi-frequency (DTMF) standard specifies that the tone generated by a button on a telephone key pad is the sum of two sinusoids, with frequencies determined by the button s row and column. The dial pad on the upper left allows you to select buttons and generate the corresponding tones. The signal plotted on the upper right is a recording of the FAX number for the MathWorks being dialed. You can replay the entire signal, or select individual segments. The power plot is the magnitude of the FFT of the signal being played. What is the MathWorks FAX number?)

本程序用小波包3层分解把信号分解成8个频段的信号。(The procedures used 3 layer wavelet packet decomposition of the signal into the eight-band signal.)

CIC每级位宽计算，包括内插滤波器每一级位宽计算，抽取滤波器每一级位宽计算。(CIC Hogenaner bits calculation)

大量matlab实例代码，适合初学者学习matlab程序(Substantial examples of code, suitable for beginners to learn matlab program)

基于多目标优化的免疫遗传算法在Matlab环境中的实现。(Immune genetic algorithm based on multi-objective optimization implemented in the Matlab environment.)

追赶法是用来解三对角矩阵的算法 此程序是基于matlab编的 (Catch-up method is used to solution of tridiagonal matrix algorithm for this procedure is based on the series matlab)

说明：  自己写的一段kalman滤波,非常基础,加入了一致性分析(Himself wrote a kalman filter, very basic, joined the consistency analysis)

This code takes speech as input, removes silence region based on zero crossing rate and energy.output of the code is only voiced region of the input speech signal.the input is of the .wav format.

energy detection algorithm.

说明：  能够很好的解决牛顿插值问题，对于构建差商表的程序给出了解释和说明！！！(Newton interpolation can be a good solution to the problem, divided difference table for building the program and instructions are given to explain! ! !)