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7.1ban
按键式电话如下图所示，当按下某一个键时会产生如图所示的相应的频率模拟信号，并通过对该信号频率的检测，识别出对应的按键。试通过编写一个数字信号分析程序，模拟完成上面的功能。(Touch-tone phone as shown below, when pressing a key will be generated as shown in the corresponding frequency analog signals and, through detection of the signal frequency to identify the corresponding button. Test through the preparation of a digital signal analysis program to simulate the function of the completion of the above.)
- 2008-05-14 21:00:16下载
- 积分：1
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BPSK_Simulation_for_AWGN_Rayleigh_Channels
BPSK SYSTEM SIMULATION
We simulate the generation of random variables r0 and r1, which constitutes the input to detector.The detector output is compared with the binary transmitted sequence and an error counter is used to count the number of bit errors.
(BPSK We simulate the gen Kearney of random variables r0 and r1. which constitutes the input to detector.The de tector output is compared with the binary trans mitted sequence and an error counter is used to c been the number of bit errors.)
- 2006-06-20 04:25:43下载
- 积分：1
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BP-fenlei
选取了民歌，古筝，摇滚和流行不同音乐，用神经网络对其进行有效分类。(Different from folk songs, guzheng, rock and pop music, using neural network to classification effectively.)
- 2014-09-09 11:11:38下载
- 积分：1
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libsvm-3.19
最新版SVM工具箱libsvm-3.19(Support vector machine SVM toolbox for data parameters of the classification and regression, simple and easy to use, strong generalization ability)
- 2014-10-29 22:10:06下载
- 积分：1
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MATLAB
一、 牛顿－拉夫逊法概要
首先对一般的牛顿－拉夫逊法作一简单说明。已知一个变量X的函数
（4－6）
解此方程式时，由适当的近似值X（0）出发，根据 （4－7）
反复进行计算，当X（n）满足适当的收敛判定条件时就是（4－6）式的根。这样的方法就是所谓的牛顿－拉夫逊法。
式（4－7）就是取第n次近似解X（n）在曲线 上的点 处的切线与X轴的交点作下一次X（n+1）值的方法。参考图4－2（a）。在这一方法中为了能收敛于真解，初值X（0）的选取及函数f（X）必须满足适当的条件，如图4－2（b）所示的那种情况就不能收敛或收敛到别的根上去。
这一方法还可以做下面的解释，设第n次迭代得到的解与真值之差，即 的误差为 时，则
（4-8）
把 在 附近对 用泰勒级数展开
（4-9）
上式略去 以下的项
（4-10）
的误差可近似由上式计算出来
图4-2
（4-11）
比较式（4-7）和（4-11），可以看出牛顿-拉夫逊法的修正量和 的误差的一次项相等。
用同样的方法考虑，给出对n个变量 (:Because of the importance and complexity of power system, better algorithm and programme language
is very important . An interior point method based on the perturbed Karush2Kuhn2Tucker (KKT) condition is pre2
sented in this paper , where the method and process for the optimal power flow is treated through the Matlab’s
symbolic math toolbox and Mfunction is also presented. Using the symbolic code , it can improve the adaptability
of the programme dramatically. The advantage is that , what we need to do is change the model expression. We
can make use of the symbolic programme to check our programme while we write the Mfunctions. Using the Mat2
lab , we find the optimal solutions and calculate quickly and efficiently. It has proposed the powerful and unique
functions of Matlab in the optimization and calculation for power system.
Key words :power system symbolic calculation optimal power flow interior point method)
- 2020-07-08 16:38:56下载
- 积分：1
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DWT_new
小波变换，小波去噪，小波滤波新方法（软阈值）(Wavelet transform, wavelet denoising, wavelet filtering new methods (soft threshold))
- 2013-12-05 10:33:05下载
- 积分：1
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my_xcorr
求序列的自相关和互相关值的matlab实现！(The function for solving the autocorrelation and cross correlation values)
- 2017-04-26 11:27:50下载
- 积分：1
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jpeg
the attached utility is a work I ve submitted to the university
It shows what a jpeg compression is all about.
the function implements the DCT transform, using a matrix operator.
note that matlab has a function for the DCT and iDCT transforms
that might be more efficient.(the attached utility is a work I ve submitted to the universityIt shows what a jpeg compression is all about.the function implements the DCT transform, using a matrix operator.note that matlab has a function for the DCT and iDCT transforms that might be more efficient .)
- 2008-01-11 15:05:19下载
- 积分：1
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dierzhang1
matlab课件很有用的,对matlab学习很有帮助,希望采纳谢谢(it s very useful)
- 2014-01-24 10:57:06下载
- 积分：1
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Interpolation
This program apply iterpolation on a speech file.
- 2014-01-25 18:52:16下载
- 积分：1
