P0301

基于matlab的DTMF数字拨号音合成，通过的简单的时域连接，用于进一步分析合成效果。DTMF2是分析部分，用于显示时域波形，频谱图和语谱图。(Based on the synthesis matlab DTMF digit dialing tone, and connected by a simple time domain, for further analysis synthesis results. DTMF2 the analysis section, time-domain waveform, spectrum and spectrogram displays the)

直流微网建模，母线电压200V，改进下垂控制(Dc micro network modeling, busbar voltage 200 v, improved droop control)

说明：   1.录制一段自己的语音信号，并对录制的信号进行采样； 2.画出采样后的语音信号的时域波形和频谱图； 3.给定滤波器的性能指标，采用窗函数法和双线性变换法设计滤波器， 并划出滤波器的频域响应； 4.用该滤波器对采集的信号进行滤波，画出滤波后信号的时域波形和频谱， 并对滤波前后的信号进行对比，分析信号的变化； 5.回放语音信号； 6.设计一个信号处理系统界面(1. Recorded their own voice for some signal, and recording the signal sampling 2. Draw samples of the voice signal after the time-domain waveform and frequency spectrum 3. Given filter performance indicators, using a window function method and dual- Design of linear transformation filters, and draw the filter frequency response 4. to use the filters on the collected signal filtering, after filtering the signal to draw the time-domain waveform and spectrum, and filtering of signals before and after contrast, analysis of signal changes 5. playback voice signal 6. to design a signal processing system interface)

说明：  曲线拟合，在众多的样本点中进行拟合，找出满足样本点分布的多项式(Curve fitting, in a large number of sample points were fitted to identify the distribution of sample points satisfy the polynomial)

该程序是关于扩频通信在不同调制方式下的抗噪声性能比较(compare in Qpsk and 16 QAM in DSSS)

Radius Basic Function 神经网络的预测程序(Radius Basic Function neural network prediction program)

求变截面梁的模态，目前只支持一处变截面，可以自己修改尺寸数据，简单好用(mode shape of the stepped cantilever beam)

用matlab实现了zigzag算法，实现功能：对任意维数的图片都都能进行加密和解密(Using matlab to achieve a zigzag algorithm functions: For any dimension pictures are able to encrypt and decrypt)

Applied.Econometrics.using.MATLAB A very good book which tells applied econometrics

说明：  该程序为了实现OFDM, BPSK等信号的能量检测。(In order to realize the energy detection of OFDM, BPSK and other signals.)