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STFFTtool
对非平稳信号进行分段、截取,再对处理过后的短时信号做短时傅里叶变换,分析其频谱特性,并找到各个时间节点的频率特性,以便分析不同事件段内的声音特征。(The nonstationary signals are segmented, and then the interception, the short-time signal after processing the short-time Fourier transform, the analysis of the spectrum characteristics and frequency characteristics and find the different time node, in order to analyze the acoustic characteristics of different event period.)
- 2017-07-26 10:54:58下载
- 积分:1
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algorithm
计算多速滤波器以及其优化算法和加快速率的提高(this program can help you improve the filter )
- 2012-09-19 10:11:46下载
- 积分:1
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Sensor-network
传感器网络节点定位算法matlab代码,利用无线传感网络的zigbee节点进行定位的MATLAB源程序(Sensor network node localization algorithm matlab code, using zigbee wireless sensor network node positioning matlab source)
- 2016-03-13 16:13:10下载
- 积分:1
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HUFFMAN
Huffan codein and decoding
- 2015-03-20 17:25:33下载
- 积分:1
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MyMathematica
说明: 学习C调用Mathematica内核函数的一个例子,包括计算和图形接口.(Learning C calling Mathematica kernel functions with examples, including computing and graphics interfaces.)
- 2010-04-05 01:44:26下载
- 积分:1
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GPCgoodDoc
广义预测控制算法非常详细仿真matlab(GPC matlab codes )
- 2016-06-02 19:44:55下载
- 积分:1
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MatlabCprogramtoghter
说明: 精通Matlab与C++混合程序设计第2版(Matlab and C++ program toghter)
- 2009-08-23 03:30:04下载
- 积分:1
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bnt
matlab code.................................
- 2011-12-09 00:02:42下载
- 积分:1
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example4_3
例3:分析占空比为ta的矩形脉冲频谱
T=1 时间窗大小
ta=0.5 占空比
N=256
t=linspace(-T,T,N)
ts=2*T/N
fs=1/ts
(x=zeros(1,N)
x(N/2-round(N/2*ta):N/2+round(N/2*ta))=ones(1,2*round(N/2*ta)+1)
y=fft(x,N)
figure
plot(t,x)
title([ 时域信号图 占空比为 ,num2str(ta)])
axis([-T T-0.2 1.2])
xlabel( t /s )
figure
subplot(211)
f=linspace(-fs/2,fs/2,N)
plot(f,abs(fftshift(y))/N)
title([ 矩形脉冲双边谱 脉冲时间t=[- ,num2str(ta*T), , ,num2str(ta*T), ] ])
xlabel( f /Hz )
)
- 2010-05-25 20:59:59下载
- 积分:1
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Hl7Chinese
医学信息编码标准,很贵呀;医学信息编码标准,很贵呀;(用于医疗软件开发的行业标准)
- 2010-01-27 21:54:19下载
- 积分:1