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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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edgedetect
说明： 利用图像的阈值分割求取边缘，并与传统的方法进行对比(Image segmentation using to acquire the edge, and compared with traditional methods)
- 2010-04-29 10:44:35下载
- 积分：1
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homework_1_2.m
filter design by matlab
- 2015-01-29 14:01:22下载
- 积分：1
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Chebyshev-filters
切比雪夫滤波器的设计与实现,设计的滤波器可满足通带内平坦的群延迟响应和通带外足够大的的衰减(Design and Implementation of Schiff cut filter, the filter designed to meet the passband than flat group delay response and pass-band attenuation is large enough)
- 2015-03-07 16:36:12下载
- 积分：1
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Statistics Code by Matlab
说明： 包含一元线性回归分析、多元线性回归分析、逐步回归分析、非线性回归分析、主成分分析、因子分析、层次聚类分析、判别分析、自相关分析和自回归分析的全套Matlab源代码(MATLAB source code including linear regression analysis, multiple linear regression analysis, stepwise regression analysis, non-linear regression analysis, principal component analysis, factor analysis, hierarchical clustering analysis, discriminant analysis, autocorrelation analysis and autoregressive analysis)
- 2019-03-14 22:17:00下载
- 积分：1
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hamilton
经典的汉密尔顿回路算法，以Matlab代码编写。(Hamilton classic loop algorithm to Matlab coding.)
- 2008-12-15 14:38:33下载
- 积分：1
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dianji
直流伺服电机转速 PID控制系统仿真 利用MATLAB中的simulink 对直流伺服电机的转速进行仿真(DC servo motor speed PID control system simulation using MATLAB simulink in the speed DC servo motor simulation)
- 2010-05-10 21:24:14下载
- 积分：1
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clip2
cliping and filteing technique in papar reduction
- 2012-05-08 10:46:13下载
- 积分：1
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src
src src src src src src
- 2011-05-05 21:51:10下载
- 积分：1
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matlab-help
导言 - 描述MATLAB系统的组成。
开发环境- 介绍MATLAB的开发环境，包括有关工具和MATLAB桌面的信息。
矩阵操作- 介绍如何用MATLAB生成矩阵以及用矩阵进行数学运算。
作图- 介绍MATLAB的作图能力，包括有关作图数据，给图表加注释，以及图像的使用。
用MATLAB编程 - 描述如何用MATLAB语言编写手稿和函数,以及利用数据结构，例如单元数组和多元数组。
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用MATLAB编程- 描述如何用MATLAB语言编写手稿和函数,以及利用数据结构，例如单元数组和多元数组。
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Yòng MATLAB biānchéng- miáoshù rúhé yòng MATLAB yǔyán biānxiě shǒugǎo hé hánshù, yǐjí lìyòng shùjù jiégòu, lìrú dānyuán shùzǔ hé duōyuán shùzǔ.EnglishSpanishArabicAlpha
- Describes the preparation of manuscripts and how to use MATLAB function, and the use of data structures, such as cell array and multi-array using MATLAB programming.)
- 2012-04-09 11:58:50下载
- 积分：1
