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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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sliding_DFT_step1
由于利用fft变换存在频谱泄露和栅栏效应，本程序利用加窗fft算法，来解决这方面的问题(As the use of fft transform existing fence effect of spectrum leakage and the procedure used windowed fft algorithm to solve this problem)
- 2010-09-19 10:05:28下载
- 积分：1
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imdwt1
说明： 很好用的小波分解程序，对初学者很有帮助。(Nice wavelet decomposition program, for beginners helpful.)
- 2011-03-23 09:58:27下载
- 积分：1
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MATLAB-program
matlab基础知识讲解，英文版，适合四级英语水平及以上的初学者使用(matlab basic knowledge to explain, in English, and English for more than four beginner)
- 2011-06-08 21:04:22下载
- 积分：1
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deeld
economic dispatch with abc algorithm
- 2013-07-12 18:29:20下载
- 积分：1
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PDF
Probability distribution function codes for communication engineering students to understand the concept of statistical analysis.
- 2014-08-18 19:53:52下载
- 积分：1
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chap5
在网上找到的代码 在网上那个找到的系统辨识与自适应控制程序 大家分享(Online to find the code online that found in the system identification and adaptive control procedures to share)
- 2012-08-13 11:16:56下载
- 积分：1
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Stress-Strain-MD
Stress Strain in Molecular Dynamics
- 2013-03-14 21:31:14下载
- 积分：1
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遗传算机组火力优化
说明： 基于matlab的遗传算法优化，具体模型是火力发电模型(Based on Matlab genetic algorithm optimization, the specific model is the thermal power generation model)
- 2020-06-30 00:31:07下载
- 积分：1
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DMbianma
DM编码的实现，可以比较好的帮助初学者DM编码的实现，可以比较好的帮助初学者
- 2011-01-06 13:57:09下载
- 积分：1
