-
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
-
QPSK_MODULATION2
Quadrature Phase Shift Keying Demo
- 2007-05-02 20:33:30下载
- 积分：1
-
Wavelet-transform-and-MATLAB-tools
本书介绍了小波变换在地震资料处理中的应用，并介绍了MATLAB工具箱(This book introduces the application of wavelet transform in seismic data processing, and introduces the MATLAB toolbox
)
- 2013-11-12 17:02:42下载
- 积分：1
-
Freeman_decomposition
SAR数据，经典Freeman-Durden极化分解程序，(SAR data, a classical Freeman-Duren decomposition procedure, helps better understand polarimetric decompositionenhancement, etc.)
- 2021-05-07 07:28:36下载
- 积分：1
-
disper
If you do not want to upload source code, you can join the
- 2011-09-30 20:26:45下载
- 积分：1
-
12
说明： matlab code about image processing
- 2009-12-01 19:38:45下载
- 积分：1
-
tqjs
说明： 实现大地测量学中，椭球参数解算。（包括正解和反解）(Achieve geodesy, the ellipsoid parameters solver. (Including the positive solution and counter-solution))
- 2010-03-30 22:11:08下载
- 积分：1
-
lab3
工程分析 简单的计算流体力学 一维流场可视化，可变参数 (Engineering analysis one-dimensional computational fluid dynamics flow visualization )
- 2015-01-10 15:48:17下载
- 积分：1
-
timing2
数字信号定时子程序，用于定时信号的最佳采样点。(Digital signal timing subroutine for the optimal sampling point timing signal.)
- 2013-12-09 16:41:46下载
- 积分：1
-
OCR
this file is sample ocr matlab code
- 2012-08-03 16:57:12下载
- 积分：1
