Origin

窗函数法设计有限冲激响应（FIR）滤波器，可根据工程上的设计指标来设计。(Window function design finite impulse response (FIR) filters, according to engineering design specifications to design.)

基于自建数据库的音乐识别及检索软件 ； 利用Matlab开发软件, 通过抓取录入歌曲的音高(pitch tracking)绘出声音的频率变化并进行降噪和润滑（smoothing）处理 与数据库中歌曲的频率变化图比对，计算出相似度top10的歌曲并显示。 (Based on self-built of music recognition and retrieval software developed using Matlab software, change the pitch of a song by crawling entry (pitch tracking) plots the frequency of the sound and noise reduction and lubrication (smoothing) processing Frequency changes in the diagram songs than calculate the similarity top10 songs and displayed.)

c4.5经典算法，实现决策树分类功能，可以对连续数值和离散数值实现很好的分类，并有剪枝功能(c4.5 classic algorithms, to achieve the decision tree classification, can be continuous and discrete numerical values to achieve good classification, and a pruning function)

this is a source code of beamforming

双极性矩形随机信号的归一化功率谱密度 HDB3码的编译码（要求给出眼图）(Normalized power spectral density HDB3 code codec bipolar rectangular random signals (required to give the eye))

三种doa估计方法，和比较性能，都能够实现，有capon，music，esprit(Three DOA estimation methods and their performance comparison)

AUTOMATIC VEHICLE IDENTIFICATION

说明：  matlab命令大全，提供.doc文件格式(matlab command Guinness provide. doc file format)

自己编写的对一幅图像实现最近邻插值和双线性插值，可以直接运行，效果很好。(Write your own images of a nearest neighbor interpolation and bilinear interpolation, can be run directly, the effect is very good.)

信号生成的组成部分，产生随机序列，生成模拟信号(signal generate)