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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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voicerecogenation
语音特征参数分析，包括语音信号的预处理，FFT变换及逆变换(Speech characteristic parameters analysis, including the speech signal pre-processing, FFT transform and inverse transform)
- 2009-11-27 13:07:48下载
- 积分：1
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toujinchengxiang
模拟透镜成像过程，分两种：基于传递函数的透镜成像、透镜成像演示(相干传递函数)(Analog lens imaging process in two ways: based on the transfer function of the lens imaging lens imaging demonstrate (coherent transfer function))
- 2012-04-28 11:56:09下载
- 积分：1
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PLS
PLS插件，用于spss17.0的PLS插件(PLS plug-in for the SPSS17.0 the PLS plug-ins)
- 2013-04-06 16:23:20下载
- 积分：1
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HandGemoetry
Hand geometry application and detection
- 2015-02-10 06:35:19下载
- 积分：1
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Assignment-3_12335-(1)
The principle of Huffman coding is (roughly) to replace symbols in the original data (in your case the value of each pixel of the image) by a numeric code that is attributed according to the probability of the symbol. The most probable (i.e. the most common) symbol will be replaced by shorter codes in order to realize a compression of the data.
- 2013-05-16 04:42:46下载
- 积分：1
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chengxu
智能控制（刘金琨版）教材书上的所有源程序(All source Intelligent Control (Hangzhou Press Edition) textbook book)
- 2015-04-10 09:47:03下载
- 积分：1
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212
基于图像预处理的DCT数字水印算法及其MATLAB实现,作者：QQ 64134703 ，电子毕业设计，欢迎咨询
(DCT-based image preprocessing for digital watermarking algorithm and MATLAB implementation of: QQ 64134703, e-graduate design, please consult)
- 2010-09-06 10:03:39下载
- 积分：1
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edgedetection
用MATLAB对图像进行边缘检测的源代码及对图像处理的资料(The image using MATLAB source code for edge detection and image processing data on)
- 2010-11-07 11:11:09下载
- 积分：1
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Turbo_matlab_3GPP
Turbo码matlab仿真3GPP标准(Turbo Code 3GPP standard simulation matlab)
- 2009-06-19 10:55:26下载
- 积分：1
