chap4_7b

去噪工具包，包含了多中去噪方法，主要是基于MATLAB环境下运行。(De-noising tool kit contains a number of de-noising method is based mainly on the MATLAB environment.)

可模拟能量检测 在任职无线网络中的频谱感知中有重要应用(Can simulate the energy detection in wireless networks in office, there are important applications of the spectrum sensing)

希尔伯特变换完整程序，整理了很长时间，但不包括测试程序(Hilbert transformation complete program, took a very long time, but not including test procedures )

IEEE30节点电力系统标准参数和潮流数据(IEEE30 node power system standard parameters and trend data)

是关于matlab通讯的一篇论文，有需要的可以看看，感觉挺好挺实用(Is a thesis on matlab communication need to look at, I feel very good to very practical)

用曲线拟合的方式估计线性调频信号的初始频率及其调频斜率。得到的效果比较好。(Curve fitting way to estimate the initial frequency and chirp rate of the linear FM signal. Get better.)

说明：  SSB调制。根据产生的余弦信号，画出相应频率载波下的调制后图形。(SSB modulation. According to the cosine signal generated graphics draw the corresponding frequency carrier modulated under.)

上传的主要是一些用MATLAB做语音处理和神经网络的的源代码 适合初学者用(Upload mainly speech processing and neural network using MATLAB source code suitable for beginners)

A speech signal filterbank, using melscale frequency and framebanking.( 1. For speech signal can be represented as a discrete sequence of frames (or feature vectors) that can be used as the input to a speech recogniser. Important ideas and techniques that are used in the assignment are the design of a (Mel frequency scale) audio filterbank, , windowing of a continuous audio signal, spectrum analysis of the signal, filtering as multiplication in the frequency domain, the visual representation of a speech signal as a spectrogram, appreciation of the acoustic variability in real speech utterances. 2. To gain a deeper knowledge of the application of MATLAB programming to audio signal processing. 3. To gain practice in the art of writing a formal report: structure, content, style, use of diagrams, presentation etc. etc. )

说明：  用matlab绘制史密斯圆图，电子通信专业必备源码(Smith Chart in Matlab)