ppas

graphical user interface

说明：  学习聚类算法的相关资料文档,对研究者有帮助(Clustering algorithm to learn the relevant information helpful to researchers)

学习并找到降噪方法，对语音信号背景噪声做处理，使得声音更清晰。(The background noise is the most common factor degrading the quality and intelligibility of speech in recordings. Spectral subtraction can lower the noise level without affecting the speech signal quality. In this paper, we have studied and implemented to reduce the background noise of the voice signal, and to make improvements to reduce the background noise of the experiment. Not only with the spectral subtraction of the noisy signal of the transformation, we improve the traditional spectral subtraction based on the introduction of the parameters, by adjusting the parameters(α、β、γ) to achieve better enhancement.)

QPSK-MBOFDM发射接收机 QPSK调制的多频带OFDM（MB-OFDM）发射机，经过加性高斯噪声信道，接收机判断误码率。 (QPSK-MBOFDM launch QPSK modulation receiver multiband OFDM (MB-OFDM) transmitter, through the additive Gaussian noise channel, the receiver determine the error rate.)

用于计算动态规划的小程序 也可以适当改变用于其他的方面(dynamic programming)

光子晶体色散方程，matlab编译，程序简单易用，正确率高(Photonic crystal dispersion equation, matlab compiler, the program easy to use, the correct rate)

实现地震叠前三参数反演（纵波速度、横波速度、密度）(prestack seismic inversion (compressional wave velocity, shear wave velocity, density))

viterbi decoding and get the curve of Eb/No and bit error rate.(implement viterbi decoding using BPSK by soft decision)

实现dijstra算法，算出任意两点间的最短路径(Implementing Dijstra algorithms)

说明：  用MATLAB产生简单三角信号及高斯信号(Generating simple triangle signal and Gaussian signal by MATLAB)