agh_chapter03

这个MATLAB的代码集是通过多个程序实现语音信号的各种分析,包括清音浊音,计算自相关函数,计算基因周期等(The MATLAB code set is more than one program by a variety of voice signal analysis, including voiceless voiced, calculated from the correlation function to calculate genetic cycles)

Base-band signal generation usin matlab

对特定图像进行颜色和亮度上的处理，并采用局部滤波方法改善全图滤波使得图像分辨率变低的问题，使用非交互式方法，程序可自行完成调整的整个过程。(Specific image processing on the color and brightness, and the use of local filtering method to improve the whole map filter makes the problem of low-resolution images, the use of non-interactive method, the program can complete the whole process of self-adjustment.)

svm (support vector machine)支持向量机(support vector machine)

在一个MIMO系统里对ZF，MF，MMSE三种不同预编码准则和滤波器进行了仿真，并比较其不同。(In a MIMO system for ZF, MF, MMSE precoding three different criteria and filter simulation, and compare its different.)

利用可视图理论对时间序列建网，得到复杂网络，再求取该网络的聚集系数(throuth the theory of time series of network construction, we get the complex network, and then calculate the clustering coefficient of the network)

Auto-scales data table Z (new operation or based on know parameters), or reverses auto-scaling operation.

用于512点循环卷积，采用的是重叠保留法，和重叠相加法(For the 512-point circular convolution, using overlapping retention law, and overlap-add method)

共振解调法诊断轴承损伤类故障的原理概述如下:当轴承某一元件表面出现局部损伤时，在受载运行过程中要撞击与之相互作用的其它元件表面，产生冲击脉冲力，由于冲击脉冲力的频带很宽，必然包含轴承外圈、传感器甚至附加的谐振器等的固有频率而激起这个测振系统的高频固有振动。根据实际情况可以选择某一高频固有振动作为研究对象，通过中心频率等于该固有频率的带通滤波器把该固有振动分离出来。然后进行包络解调，去除高频衰减振动的频率成分，得到只包含故障特征信息的低频包络信号，对这一包络信号进行频谱分析便可以容易地诊断出轴承的故障来。(The principle of resonance demodulation method in the diagnosis of bearing damage such failure overview is as follows: when the bearing surface of a local damage, in the process of loading operation to hit with other elements of the interaction of surface, impact pulse power, due to the impact pulse frequency band is very wide, inevitably contains the bearing outer ring, sensors and even additional resonator and stir up the natural frequency of the vibration system of the high frequency vibration mode.A high frequency vibration mode can be selected according to actual situation as the research object, through the center frequency is equal to the natural frequency of the bandpass filter to separate the natural vibration.Then envelope demodulation, frequency components to remove the high frequency vibration attenuation, get only includes fault feature information of low frequency envelope signal, the envelope signal spectrum analysis can be easily diagnosed bearing failure.)

matlab code for a function of fsk