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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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libsvm
libsvm的最新函数包，包含了各种语言的接口，可方便的实现分类，回归等问题(libsvm package)
- 2013-12-11 13:58:15下载
- 积分：1
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pmsm-backstepping-speed-control
永磁同步电动机反推速度控制，很不错，控制效果很好(Backstepping speed permanent magnet synchronous motor control, very good)
- 2013-12-25 09:58:49下载
- 积分：1
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yuandongji
船舶电力系统matlab/simulink仿真模型，发电机原动机模块(Marine Power System matlab/simulink simulation model generator prime mover module)
- 2021-05-08 19:08:35下载
- 积分：1
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decision-tree
程序实现了生成决策树并使用决策树对离散特征向量进行分类。在判断是否要继续生成叶节点时采用entropy来作为impurity的measurement.(Program and use the decision tree decision tree to generate discrete feature vectors for classification. In determining whether to continue generating leaf nodes using entropy as the impurity of the measurement.)
- 2013-08-04 05:49:10下载
- 积分：1
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TOPSIS
说明： Topsis Matlab function
- 2019-11-28 16:24:23下载
- 积分：1
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NSF_orig_upld
线阵校正的经典NSF方法，针对阵列幅相误差进行。(NSF for ULA selfcalibration)
- 2012-02-14 17:17:09下载
- 积分：1
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PV-system
PV-SYSTEM based on matlab simulink model ..
- 2011-07-25 03:19:57下载
- 积分：1
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hw1-1
Read a file into a matrix and display it on the screen using the MATLAB commands imagesc and axis.
- 2014-09-11 15:00:27下载
- 积分：1
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Textembed
Embedding text in an image
- 2013-11-19 15:26:56下载
- 积分：1
