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this is serialATA 2.6 spec,the most popular spec of HDD(serialATA 2.6)

说明：  提出了一种改进高阶Butterworth低通滤波器性能的设计方法。首先对高阶Butterworth低通滤波器的极点 进行重新分布，得出改进型Butterworth低通滤波器。性可以由其在基波电压初相位为零时的特性所唯一确定(Periodic voltage and current waveforms on the start time of its corresponding harmonic component of the relationship between the initial phase of research, pointed out that the characteristics of harmonic sources can be its initial phase in the fundamental zero-voltage characteristics of the CD a definite)

说明：  计算金属球体RCS的MATLAB程序. 就是教科书上金属球体RCS曲线计算的MATLAB程序.(RCS calculation of the metal sphere of MATLAB procedures. Is textbook metal sphere RCS curve calculated MATLAB program.)

本文说明了下载专用的工具箱（toolbox）以后系统提示出错的解决方法以及安装过程(This article describes the download special toolbox (toolbox) after the system prompts error solutions and the installation process)

说明：  PSO-LSSVM分类测试程序代码模板,PSO优化LSSVM工具箱——分类部分(PSO-LSSVM Classification Test Program Code Template, PSO Optimizing LSSVM Toolbox-Classification Part)

说明：  用Matlab编的BPSK程序，简单准确(Using Matlab program for the BPSK, simple and accurate)

本书详细介绍了matlab在信号分析和处理方面的应用，有丰富的应用实例和习题，有大量的源程序。(the book details the Matlab signal analysis and processing of applications, is rich in examples and exercises, a large number of the source.)

一个相对完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT，上下变频，高斯信道建模，FFT，PAPR抑制，各种同步，解调和解码等模块，并统括系统性能的仿真验证了系统设计的可靠性。(Simulation and Design of a relatively complete OFDM communications system, including coding, modulation, IFFT, down conversion, Gaussian channel model, FFT, PAPR suppression, various synchronization, demodulation and decoding module and simulation of system performance omnibus the reliability of system design.)

计算语音信号的短时能量和过零率，显示它的时域波形(Calculated short-time speech signal energy and zero crossing rate, showing its time-domain waveform)

基于小波神经网络PNN 的说话人识别程序，希望对大家有所帮助(Based on Wavelet Neural Network PNN the speaker recognition process, and they hope to help everyone)