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untitled1
基于matlab的数字水印的提取攻击嵌入很gui界面制作(Based the Matlab digital watermark extraction Attack embedded gui interface production)
- 2013-05-17 20:29:21下载
- 积分：1
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零熵法
说明： 针对低信噪比环境下基于能零比的端点检测方法准确率低的问题,提出了一种结合谱减法和短时零熵法的端点检测方法。首先通过功率谱减法对带噪语音进行降噪处理,然后结合短时平均过零率特征与谱熵特征,构造出一种新的语音参数,即短时零熵,最后运用双门限算法进行端点检测。实验结果表明该方法在复杂噪声环境下具有良好的端点检测性能,降低了检测的误判率。(To solve the problem of low accuracy of endpoint detection method based on energy zero ratio in low SNR environment, an endpoint detection method combining spectral subtraction and Short-term zero entropy method is proposed. Firstly, the noise is reduced by power spectrum subtraction, then a new speech parameter, short-time zero entropy, is constructed by combining the short-time average zero crossing rate and spectral entropy. Finally, the double threshold algorithm is used for endpoint detection. The experimental results show that this method has good performance of endpoint detection in complex noise environment, and reduces the rate of detection error.)
- 2020-06-24 11:34:11下载
- 积分：1
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fenzhi
#include <iostream.h>
int main()
{
int i(0),sum(0)
while (i<=100)
{
sum=sum+i
++i
}cout<<"sum="<<sum<<endl
return 0；
}
- 2009-12-11 22:03:44下载
- 积分：1
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Thresholding
simulation of unimodal image thresholding
- 2010-01-05 21:35:45下载
- 积分：1
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initiall
mfile about spot price in matlab
- 2013-09-20 12:12:27下载
- 积分：1
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Ga
说明： 逆向物流GA算法，算法虽然麻烦，复杂，但是还是可以解决问题。(Reverse Logistics GA algorithm, algorithm, although laborious, complex, but can still solve the problem.)
- 2010-08-04 22:26:34下载
- 积分：1
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hkbu2005
介绍了构造均匀设计表的好格子点算法与生成原理，以中心化偏差为均匀性测度，使用MATLAB编写了生成中心化偏差值最小的均匀设计表的计算机通用程序，通过与文献比较，验证了程序的正确性，得到了更多的均匀设计表(The principle and good lattice points designing uniform design table are introduced，the general MATLAB programs for uniform design table are proposed base on searching the minimum of uniform design table s centered L2-discrepancy. The results shows that the programs are right by comparison of the others.)
- 2009-06-13 22:10:26下载
- 积分：1
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shiyan5
曹梦龙 仿真大实验 实验五
包括所有有用数据(Caomeng Long simulation experiment in Experiment 5, including all useful data)
- 2011-08-25 09:20:55下载
- 积分：1
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Ex5_pmm
example simulation s of analysis of electrical machinery and drive systems - Pual C. Krause - Ex5
- 2013-10-04 04:32:15下载
- 积分：1
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Modeling-Rayleigh-fading-channel-based-on-modifie
This Matlab Code models a Rayleigh fading channel using a modified Jakes channel model.
A modified Jakes model chooses slightly different spacings for the scatterers and scales their waveforms using Walsh–Hadamard sequences to ensure zero cross-correlation.
alpha_n = frac{pi(n-0.5)}{2M} and eta_n = frac{pi n}{M},
results in the following model, usually termed the Dent model or the modified Jakes model:
R(t,k) = sqrt{frac{2}{M}} sum_{n=1}^{M} A_k(n)left( cos{eta_n} + jsin{eta_n}
ight)cos{left(2pi f_d t cos{alpha_n} + heta_{n}
ight)}.
The weighting functions A_k(n) are the kth Walsh–Hadamard sequence in n. Since these have zero cross-correlation by design, this model results in uncorrelated waveforms. The phases ,! heta_{n} are initialized randomly and have no effect on the correlation properties. Matlab fast Walsh-Hadamard transform function is used to efficiently generate samples using this model.
- 2015-03-10 15:15:01下载
- 积分：1
