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ASK_coherent_modu
幅频键控ASK的相干调制解调以及非相干调制解调的仿真实现,源代码中作了详细的备注,通过学习该代码能够对ASK的调制解调有更加深入的认识(Coherent amplitude and frequency shift keying ASK modulation and demodulation, and non-coherent modulation and demodulation simulation, source code made detailed notes, by learning the code to the ASK modulation and demodulation of a more in-depth understanding of)
- 2013-08-15 18:35:21下载
- 积分:1
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sRGB2XYZ
SRGB 数据转化为XYZ 数据格式,色彩学相关研究人员会有所帮助(SRGB data into XYZ data format, color science will help the researchers)
- 2010-09-15 08:16:18下载
- 积分:1
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ucancmusic
它是基于均匀圆阵的非圆信号NC-MUSIC算法的波达方向估计(It is DOA estimation of UCA Based on NC-MUSIC algorithm)
- 2010-12-25 11:42:59下载
- 积分:1
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epsk
epsK matlab modulation
- 2009-07-09 23:58:15下载
- 积分:1
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fuzzy-PID
说明: 模糊PID控制器设计源程序,已在matlab中运行通过,有良好的控制效果(Fuzzy PID controller design source, has been run by matlab, good control effect)
- 2009-08-29 16:30:58下载
- 积分:1
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03607_28
DFT进行频谱分析时的三种现象
1、混叠:对连续信号采样,要求连续信号是带限的,采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。
采样前加低通滤波器防混叠
2、频谱泄漏:DFT对时域信号进行了截断(相当于采样信号乘了一个窗函数),时域的乘积相当于频域卷积,改变了原信号频谱。
改用其他窗函数(非矩形)改善泄漏。
3、栅栏现象:DFT 只给出了频谱在采样点上的取值,采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)
- 2007-05-08 16:22:17下载
- 积分:1
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filter
强大的滤波器设计软件,实现低通、高通滤波,非常实用(Powerful filter design software, to achieve low pass, high pass filter, very practical)
- 2013-08-19 19:18:22下载
- 积分:1
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matrianswer
数值计算用用到的各种线性方程解法的程序,非常适合初学MATLAB和数值计算的研一学生所用(With numerical solution of linear equations used in a variety of programs, very suitable for beginners MATLAB and numerical study used a student)
- 2011-10-30 16:28:49下载
- 积分:1
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eof
对数据进行EOF分解,得到数据的空间分布和时间系数,进行时空分析。(EOF on the data decomposition, get the spatial distribution and the time coefficient data, spatio-temporal analysis.)
- 2015-04-21 21:44:59下载
- 积分:1
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mpcc
MFCC,即倒谱系数,也是语音的一个特征之一,能够充分利用人耳的特性
% 具体的求法就是预处理,然后加窗,进行傅立叶变换,再求出功率普
% 然后得出其自然对数,最后进行dct变换
% 代码是用matlab写的,用到的一个语音工具箱,可以从网络上下载。(MFCC, that is, just a few pedigree, as well as a voice of one, to take full advantage of people's ears% of the specific characteristics of the solution is pretreatment, then increasing the window, Fourier transform, another sought power pu% then come to its natural logarithm, culminating transform% Extra code is written in Matlab. use of a voice box can be downloaded from the Internet.)
- 2006-05-21 01:54:56下载
- 积分:1