pryecto

论文主要研究了自适应滤波器的基本结构和最小均方误差算法(LMS算法)，同时采用MATLAB语言对该算法进行了仿真，然后使用SY-5402EVM 评估板对其进行了DSP 实现，并对结果进行了分析。(Paper studied the basic structure of adaptive filter and minimum mean square error algorithm (LMS algorithm), while the use of MATLAB language simulation of the algorithm, and then use the SY-5402EVM a DSP evaluation board for its realization, and the results analyzed.)

用Matlab以及c语言求语音序列的倒谱 这某段语音信号求FFT、取模、取log、IFFT得到倒谱，并画图。选取一段进行分析，分别对浊音和清音各自求倒谱。(Using Matlab, as well as for c language serial Cepstral voice that voice signal for a certain period of FFT, check mode, check log, IFFT been cepstrum, and drawing. Select a section of the analysis, respectively, and the voiceless to voiced their demand cepstrum.)

It has m files. These m files will run in matlab. Different kinds of table can be drawn by these m files

....瑞利平坦衰变信道.doc ....channel_model ....AS2sigma_gaussian_90.mat ....AS2sigma_gaussian_180.mat ....AS2sigma_laplacian_90.mat ....correlation.m ....dialog.m ....erfcomp.m ....geometry2correlation.m ....Rxx_gaussian.m ....Rxx_laplacian.m ....Rxy_gaussian.m (.... Rayleigh flat decay channel. Doc .... channel_model .... AS2sigma_gaussian_90.mat .... AS2sigma_gaussian_180.mat .... AS2sigma_laplacian_90.mat .... correlation.m .... dialog. m .... erfcomp.m .... geometry2correlation.m .... Rxx_gaussian.m .... Rxx_laplacian.m .... Rxy_gaussian.m)

此程序很好的实现了Turbo码的编码以及解码。运行main函数，然后输入相关参数。(This program achieved a very good encoding and decoding Turbo codes. Run the main function, and then enter the relevant parameters.)

说明：  这里介绍了一种基于自适应滤波的噪声抵消法，采用归一化最小均方误差算法，采集实际噪声环境下各种不同信噪比的带噪语音样本进行降噪处理，实验结果表明，处理后信号的信噪比得到了较大程度的提高，大大改善了听音效果，具有很高的可懂度，且语音自然度好，没有失真；并与谱减法进行了比较，自适应噪声抵消法的降噪幅度比谱减法有一定提高，在听音效果上，用自适应噪声抵消法处理后的语音在清晰度，自然度方面优于谱减法。(Here a novel adaptive noise cancellation method using normalized least mean square algorithm, collecting a variety of actual noise environment, the SNR of noisy speech samples for noise reduction, experimental results show that treatment After the signal to noise ratio was greater improvement in the level, greatly improved the listening results, with high intelligibility and naturalness of speech is good, no distortion and were compared with the spectral subtraction, adaptive noise cancellation law than the spectral subtraction noise reduction rate of a certain improvement in the listening results, and with the adaptive noise cancellation method in the treatment of voice clarity, naturalness is better than spectral subtraction.)

此程序描述了怎么样从已知的模糊规则建立模糊规则查询表。(This procedure describes how to create fuzzy rules from the known look-up table of fuzzy rules. )

支持向量机在matlab中的安装工具箱 lssvm(matlab application support vector machine toolbox)

提取语音信号的lpc参数可调用lpcfit.m 程序(voice signal from the lpc parameters of available procedures lpcfit.m)

simple code for rotating spinor in the bloch sphere . Not that great . Used quaternion to do the job.