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获取WAV声音文件，转换成数字的两个程序代码。(Get WAV sound files, converted into digital code for the two procedures.)

OFDM系统信道估计及其matlab仿真。(The channel estimation for the OFDM system and its matlab simulation.)

高斯混合模型——GMM的算法，属于大数据量的数据处理(failed to translate)

test BPSK ofdm add awgn ber

一种自适应滤波算法，可进行lms和rls算法学习和实现(An adaptive filtering algorithm, LMS and RLS algorithms can be learning and implementation )

Chebpack by Damian Trif

基于小波变换的数字水印检测代码，可以将水印分离出来(Based on Wavelet Transform Digital Watermarking detection code, a watermark can be separated)

通过MATLAB实现PCM的低速语音编码。(Through the realization of MATLAB PCM low bit rate speech coding.)

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet. The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.

using the magic time-step in 1D FDTD grid, implement a total-field/scattered-field wave-source.