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2d wavelet quantization

说明：  信号检测与估计中文书信号检测与估计中文书(the book of estimation of signal in chinese)

语音信号的时域分析，有短时能量，短时平均幅度，短时过零率，清音自相关序列，浊音自相关序列，傅里叶分析。(Speech signal time-domain analysis, short-time energy, short-term average, short-term zero-crossing rate, voiceless autocorrelation sequence, voiced autocorrelation sequence, Fourier analysis.)

基于固定点的ICA程序，并给出仿真的例子，鲁棒性很好(Based on fixed-point ICA procedure and the simulation example of a very good robustness)

说明：  图像在传输或长期保存中会存在图像质量下降，此程序用来对此类图像进行复原(Image in a transmission or long-term preservation will exist in image quality drop, the program used to such image restoring)

基本的EMD分解matlab工具箱文件，包括瞬时频率，瞬时幅值，边际谱，Hilbert谱(EMD decomposition matlab toolbox basic documents, including instantaneous frequency, instantaneous amplitude, marginal spectrum, Hilbert spectrum)

IIR滤波器设计，包含切比雪夫，巴特沃兹，椭圆等滤波器matlab代码。可直接运行。(IIR filter design, including Chebyshev, Butterworth, oval filter matlab code. Can run.)

永磁同步电机矢量控制，基于matlab/simulink仿真(Permanent magnet synchronous motor vector control, simulation based on matlab/simulink)

生成4阶M序列的matlab程序，这是一个function函数，应用时在matlab上输入一个初始向量(Generation 4 order M series of matlab program, this is a function function, application in matlab input a initial vector)

求出以dB为单位的给定比特信噪比的误符号率(Find the symbol error rate of a given bit signal-to-noise ratio in dB)