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awgn
DTMF(双音多频)是用两个特定的单音频组合信号来代表数字信号的一种编码技术。两个单音的频率不同，代表的数字或实现的功能也不同。可采用8种频率代表电话机上的16个按键，10个数字键0~9和6个功能键*、#、A、B、C、D。具体的频率组合见参考书。要求：
(1) 根据键盘输入的符号，利用MATLAB产生对应的DTMF信号；(2) 分别利用FFT算法和Goertzel算法计算该DTMF信号的频谱并画出频谱图；(3) 根据频谱图确定DTMF信号所代表的符号是否和输入的符号一致。
(DTMF (Dual Tone Multi-Frequency) is a single with two specific combination of audio signals to represent a kind of digital signal coding techniques. Two monosyllabic different frequency, on behalf of the numbers, or the realization of the functions are also different. Eight kinds of frequency of use on behalf of telephone on the 16 keys, 10 numeric keys 0 ~ 9 and 6 function keys*,#, A, B, C, D. The frequency of specific composition of reference books. Requirements: (1) According to the keyboard input of symbols, the use of MATLAB have a corresponding DTMF signal (2), respectively, using FFT algorithm and the Goertzel algorithm DTMF signal spectrum and frequency spectrum draw (3) According to DTMF signal frequency spectrum to determine represented by symbols and input symbols unanimously.)
- 2008-12-24 20:12:16下载
- 积分：1
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sfnet
我写好注释的用MATLAB建立无标度网络的代码(I have written comments to establish with MATLAB code for scale-free network)
- 2010-11-01 12:35:16下载
- 积分：1
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chengxu
求两幅存在一定位移或偏差的RGB图像的均方根误差MSE和峰值信噪比PSNR(Seeking two RGB images there is a certain displacement or deviation of the root mean square error (MSE) and peak signal to noise ratio PSNR)
- 2013-03-10 18:04:46下载
- 积分：1
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7阵元Cholesky分解实现代码Cholesky
7阵元Cholesky分解实现代码，FPGA编程的Matlab对应程序，这是一个子函数，使用时对输入矩阵稍加修改即可(7 elements Cholesky decomposition Matlab corresponding program code, FPGA programming, which is a sub-function, use the input matrix can be slightly modified)
- 2020-07-07 12:38:57下载
- 积分：1
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bahuanghou
用于解决人工智能中的八皇后的问题，是比较经典的问题，用matlab编程实现(Artificial intelligence used to solve the eight queens problem, the problem is more classic, with the matlab programming)
- 2011-06-15 14:21:44下载
- 积分：1
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TOOLBOX_calib(8)
4步标定法，主要是实现计算机数字图像处理摄像机的标定，操作简单，比较实用(4-step calibration method is to achieve a computer digital image processing camera calibration, easy operation, more practical)
- 2011-07-20 20:55:35下载
- 积分：1
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zhexian_xinlaiyu
这是一个用基于折线的信赖域方法求解优化问题的matlab程序(This is a matlab program polyline-based trust region methods for solving optimization problems)
- 2012-06-02 19:48:57下载
- 积分：1
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With_Delay
Matlab对于脉冲时滞分数阶多智能体动力系统的仿真，差分方法，注释详尽，给出例子，也可以自行更改系数矩阵。(Matlab For more impulsive delay Fractional simulation, finite difference method Agent dynamical systems, detailed notes, give an example, you can change yourself coefficient matrix.)
- 2020-12-15 11:49:14下载
- 积分：1
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niejeng_v56
matlab开发工具箱中的支持向量机，可以实现模式识别领域的数据的分类及回归，相控阵天线的方向图（切比雪夫加权）。( matlab development toolbox support vector machine, You can achieve data classification and regression pattern recognition, Phased array antenna pattern (Chebyshev weights).)
- 2016-10-25 17:25:19下载
- 积分：1
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VCSOA_opticalswitch
这是一个关于基于VCSOA的光开关的仿真程序。仿真程序基于传输矩阵法设计的，将整个器件在轴向按折射率的不同分成很多层。计算了在外部抽运（即泵浦，加在放大器上的工作电流）呈现周期性变化时，放大器将输出一系列的光脉冲，即光开关。
(
This is a simulation package for computing the characteristics of the VCSOA when acting as an optical switch, which is designed based on TMM( transfer matrix method). The whole device is splitted into many segments in the axis direction according to different index. When the external pump is a periodic signal, the output of the VCSOA would be a pulse train, which can be used as optical switch. )
- 2020-09-04 09:48:06下载
- 积分：1
