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ding
选取windows系统自带的ding.wav信号作为分析对象,在Matlab软件平台下,利用函数wavread对音频信号进行采样,记住采样频率和采样点数,听一下原始声音sound(y, fs, bits)。
(2)音频信号的频谱分析,先画出音频信号的时域波形;然后对音频号进行快速傅里叶变换fft(y,N),N取32768,画出信号的频谱特性,加深对频谱特性的理解。
(3)根据频谱,反演时域特性,画出时域波形。寻找幅值最大的两个频率,此频率除以fft点数在乘以采样频率就是信号的主频,即可合成信号的时域图形,听一下声音。
(4)对原音频信号进行1024点的分段付立业分析meshgrid
(5)根据主要频线合成音频,并画出时域图形,试听合成效果。
(6)采用线性插值(linspace)和傅立业反变换(fliplr, ifft)分别合成音频,并画出时域图形,试听效果。
(err)
- 2009-01-13 16:23:47下载
- 积分:1
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Cells
介绍了一种光伏电池的建立模型的方法,全英文的,看看外文还是很有好处的!(PV cells are introduced to model a way, all in English, foreign language is still very good look!)
- 2011-01-30 17:16:42下载
- 积分:1
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abc-system
说明: 同步电机的matlab语言程序,在matlab环境下开发(Matlab synchronous machine language program developed in matlab environment)
- 2011-03-22 23:50:42下载
- 积分:1
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HMM-proj
HMM based speech recognition..
- 2013-11-10 01:12:51下载
- 积分:1
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123
融合程序,matlab的源代码。内含两个程序。(Fusion program, Matlab source code. Contains two procedures.)
- 2012-06-09 10:23:51下载
- 积分:1
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IEEE30
IEEE30节点配电网标准系统图,可运行,用于配电网建模,电能质量分析(IEEE30 node distribution network standard system diagram, you can run.)
- 2021-03-29 16:39:10下载
- 积分:1
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多种群遗传算法
说明: 多种群遗传算法的函数优化算法,通过多个种群之间的相互交流,加强遗传算法的寻优能力(The function optimization algorithm of multi population genetic algorithm strengthens the optimization ability of genetic algorithm through the mutual communication of multi population)
- 2019-10-24 10:31:58下载
- 积分:1
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yangbenshang
样本熵 结合样本熵和谐波小波分解,MATLAB程序原代码(Sample entropy and sample entropy combined with harmonic wavelet decomposition, MATLAB program source code)
- 2009-02-12 13:07:25下载
- 积分:1
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lixiangjiaozheng
在不考虑运动误差的影响下,简单易懂的双基地前视sar距离徙动校正(Forward-looking, easy-to-understand bistatic the sar distance migration correction does not consider the impact of the motion error)
- 2013-04-15 11:09:37下载
- 积分:1
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TSP
MATLAB TSP问题解决.可自行输入城市坐标.
(MATLAB TSP problem. Are free to enter the city coordinates.)
- 2009-04-01 17:12:59下载
- 积分:1