-
Wavelet
传统的信号理论，是建立在Fourier分析基础上的，而Fourier变换作为一种全局性的变化，其有一定的局限性。在实际应用中人们开始对Fourier变换进行各种改进，小波分析由此产生了。小波分析是一种新兴的数学分支，它是泛函数、Fourier分析、调和分析、数值分析的最完美的结晶；在应用领域，特别是在信号处理、图像处理、语音处理以及众多非线性科学领域，它被认为是继Fourier分析之后的又一有效的时频分析方法。 小波变换与Fourier变换相比，是一个时间和频域的局域变换因而能有效地从信号中提取信息，通过伸缩和平移等运算功能对函数或信号进行多尺度细化分析（Multiscale Analysis），解决了Fourier变换不能解决的许多困难问题。(The traditional signal theory, is based on Fourier analysis based on Fourier transform, and as a kind of global change, it has some limitations. In the actual application of Fourier transform people began to various improved, wavelet analysis produced. Wavelet analysis is a new branch of mathematics, it is functional, Fourier analysis, harmonic analysis, numerical analysis of the crystallization of the most perfect In the fields of application, especially in signal processing, image processing, audio processing as well as many nonlinear scientific fields, it is considered to be the Fourier analysis after another effective time-frequency analysis method. Wavelet transformation and Fourier transform, compared is a time and frequency domain and the local transform can effectively extract information from signal, through the telescopic peace shift etc operation function of the function ?
)
- 2011-06-26 20:07:10下载
- 积分：1
-
575599316SVPWM_2
The main disadvantage of this method is that SCRs are expensive as they must possess low turn-on and turn-off times.
- 2014-08-10 22:55:11下载
- 积分：1
-
CHANNEL
高斯信道、莱斯信道和瑞利信道的误码率分析(Gaussian channel, Rice channel and Rayleigh channel the analysis of BER )
- 2021-03-14 16:39:23下载
- 积分：1
-
forloop.cpp
利用C++程序语言编译的C++中for循环的一个实例的控制台程序。(Using the console application for an example of a cycle of C++ program in C++ language compiler.)
- 2015-03-24 10:58:23下载
- 积分：1
-
vioce-signal-processing
录制自己的一段语音，时间控制在15秒到30秒左右；利用wavread函数对自己的语音进行采样，记住采样频率。
（1）画出原始语音信号的时域波形，而后以1秒为间隔，求出每秒数据的功率谱。
（2）根据语音信号特点，分别设计FIR及IIR滤波器，分别画出滤波器幅频和相频特性曲线。用设计的滤波器对信号滤波，画出滤波后时域波形。用sound函数回放语音信号。
（3）求出特征频段语音信号随时间变化的曲线（每间隔0.05秒求一次功率谱）。
(Record your own voice for some time (15 seconds to 30 seconds) use wavread function of the voice samples, remember the sampling frequency. (1) Draw the original speech signal in time domain waveform, and then to 1 second intervals, the data obtained power spectrum per second. (2) According to the voice signal characteristics, FIR and IIR filters were designed, namely to draw the amplitude and phase frequency characteristic curve. With the design of the filters on the signal filtering, to draw the filtered time-domain waveform. Playback with sound function of the speech signal. (3) Find the characteristic band speech signal curve over time (0.05 seconds intervals seeking a power spectrum.))
- 2011-06-01 22:29:27下载
- 积分：1
-
mdpsk_modulation
mdpsk的调制程序，可以调制任何m值的差分和非差分调相数字信号，只需要输入消息序列就行(mdpsk modulation process can be modulated to any m value of the differential and non-differential phase modulation digital signal, only need to enter the message sequence on the line)
- 2011-09-15 17:27:45下载
- 积分：1
-
shujuyasuo
图像压缩的MATLAB程序，可用于压缩任意图像(Image compression MATLAB program)
- 2013-03-05 16:58:50下载
- 积分：1
-
cst
cst fem matlab code lh l lfhlgdhlkf g hdlk gh lkdgh lkdfhlkg dhflkghdflhg ld
- 2012-01-22 00:23:39下载
- 积分：1
-
Chapter4
现代通信系统书第四章程序（电子工业出版社）(Modern communications systems book chapter IV procedures (Electronics Industry Press))
- 2009-04-03 15:27:40下载
- 积分：1
-
mfile
ICA盲源分离方法，可以很快的分离混合信号，对初学者有很大的帮助。(ICA blind source separation methods, can quickly separate mixed signal, there is a great help for beginners.)
- 2012-03-29 15:52:30下载
- 积分：1
