Search - DTMf By Matlab

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[Special Effects] dtmf DL : 0: • To design a GUI in MATLAB for Dual-Tone Multi-Frequency (DTMF) telephone key pad, including DTMF Signal generator and DTMF tone detector • To simulate the DTMF signals with noise based on the specifications given. • To decode and display the DTMF signals by using FFT algorithm
Update : 2008-10-13 Size : 16.28kb Publisher : 冯扬
[Special Effects] dtmf DL : 1: • To design a GUI in MATLAB for Dual-Tone Multi-Frequency (DTMF) telephone key pad, including DTMF Signal generator and DTMF tone detector • To simulate the DTMF signals with noise based on the specifications given. • To decode and display the DTMF signals by using FFT algorithm
Update : 2025-02-19 Size : 16kb Publisher : 冯扬
[DSP program] lab_7 DL : 0: 双音多频编解码系统，用于产生双音多频信号，并由双音多频信号解码出对应的按键-DTMF codec systems, used to generate DTMF signal by the DTMF signal decoding keys corresponding
Update : 2025-02-19 Size : 11kb Publisher : 杨乐
[matlab] DTMF DL : 0: 用matlab的gui编写的DTMF双音多频信号生成与检测的演示程序，运行方法见readme，希望能对大家有所帮助。-Matlab by the gui prepared DTMF DTMF signal generation and detection demo program, run method see readme, for all of us hope to be helpful.
Update : 2025-02-19 Size : 24kb Publisher : 凌瀚宇
[matlab] Matlab-dtmf DL : 0: dtmf的matlab实现.包含理论分析.适合初学者.-DTMF to achieve the matlab. contains theoretical analysis. suitable for beginners.
Update : 2025-02-19 Size : 86kb Publisher : popo77
[matlab] awgn DL : 0: 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.
Update : 2025-02-19 Size : 15kb Publisher : wyyy
[Communication] DTMF_GEN_DEC DL : 0: I WANT TO DO GUI FOR TRANSMISSION OF DATA FROM ONE CELLPHONE TO ANOTHER.BY DTMF
Update : 2025-02-19 Size : 9kb Publisher : avinash
[matlab] shiyan2 DL : 0: 本文主要阐述了DTMF的原理及如何在MATLAB上产生DTMF信号，主要涉及到电话拨号音合成的基本原理及识别的主要方法，利用 MATLAB 软件以及 FFT 算法实现对电话通信系统中拨号音的合成与识别。并进一步利用 MATLAB 中的图形用户界面 GUI 制作简单直观的模拟界面。能够利用矩阵不同的基频合成 0 － 9 不同按键的拨号音，并能够对不同的拨号音加以正确的识别，实现由拨号音解析出电话号码的过程，完成对电话拨号音系统的简单的实验仿真。-This paper described the principle and how DTMF in MATLAB to generate DTMF-This paper describes the principle of DTMF and how MATLAB to generate DTMF signals, mainly related to the telephone dial tone and identification of the basic principles of synthesis of the main method, using MATLAB software, and the FFT algorithm to the telephone communication system, the synthesis and identification of dial tone . And further the use of MATLAB' s graphical user interface simple and intuitive GUI make the analog interface. Able to use a different fundamental frequency matrix synthesis of 0- 9 different button dial tone and can be different correct identification of dial tone to achieve by the dial tone of the process of parsing a telephone number to complete the telephone dial tone system, a simple experiment simulation.-This paper described the principle and how DTMF in MATLAB to generate DTMF
Update : 2025-02-19 Size : 1kb Publisher : 余
[Mathimatics-Numerical algorithms] DTMF DL : 0: matlab实现DTMF辩音程序，要求由用户生成DTMF音保存为wav格式，即可。-DTMF tone debate matlab implementation procedures required DTMF tone generated by the user is saved as wav format, you can.
Update : 2025-02-19 Size : 288kb Publisher : 晋青丰
[Speech/Voice recognition/combine] dianhuabohaoyuyinshibie DL : 0: 双音多频 DTMF（ Dual Tone Multi-Frequency ）信号，是用两个特定的单音频率信号的组合来代表数字或功能。在 DTMF 电话机中有 16 个按键，其中 10 个数字键 0 — 9 ， 6 个功能键 * 、 # 、 A 、 B 、 C 、 D 。其中 12 个按键是我们比较熟悉的按键，另外由第 4 列确定的按键作为保留，作为功能键留为今后他用。根据 CCITT 建议，国际上采用 697Hz 、 770Hz 、 852Hz 、 94lHz 低频群及 1209Hz 、 1336Hz 、 1477Hz 、 1633Hz 高频群。从低频群和高频群任意各抽出一种频率进行组合，共有 16 种组合，代表 16 种不同的数字键或功能，每个按键唯一地由一组行频和列频组成-DTMF DTMF (Dual Tone Multi-Frequency) signal, is one of two specific A combination of audio frequency signals to represent the number or function. In the DTMF telephone has 16 buttons, which 10 number keys 0- 9, 6 function keys*,#, A, B, C, D. 12 of them Keys is more familiar with the keys, another set from the first four buttons as retention of a functional Key left for future uses. According to CCITT recommendations, the international use of 697Hz, 770Hz, 852Hz, 94lHz low frequency group and 1209Hz, 1336Hz, 1477Hz, 1633Hz frequency group. From the low group and high-frequency group out of any one frequency for each combination, a total of 16 combinations, the number of representatives of 16 different Character or function keys, each key uniquely by a group composed of row frequency and column frequency
Update : 2025-02-19 Size : 12kb Publisher : 李小勇
[Communication] DTMF DL : 0: 对DTMF电话通信过程的仿真，并通过MATLAB的GUI界面模拟电话拨号，同时考虑信道的信噪比对接收端拨号探测的影响。-Using MATLAB to simulate DTMF telephone communications. Simulate dailing interface by GUI, and consider effect of channel SNR on signal detection at receiver side.
Update : 2025-02-19 Size : 1.08mb Publisher : Wenwen
[assembly language] touchtone DL : 0: 运用FFT技术来综合和分析电话拨号的过程，matlab来分解了这一过程，希望能提供帮助- TOUCHTONE Use FFT to synthesize and analyze telephone dialing The dual tone multi-frequency (DTMF) standard specifies that the tone generated by a button on a telephone key pad is the sum of two sinusoids, with frequencies determined by the button s row and column. The dial pad on the upper left allows you to select buttons and generate the corresponding tones. The signal plotted on the upper right is a recording of the FAX number for the MathWorks being dialed. You can replay the entire signal, or select individual segments. The power plot is the magnitude of the FFT of the signal being played. What is the MathWorks FAX number?
Update : 2025-02-19 Size : 2kb Publisher : lipu
[Speech/Voice recognition/combine] DTMF DL : 0: 基于matlab的DTMF数字拨号音合成，通过的简单的时域连接，用于进一步分析合成效果。DTMF2是分析部分，用于显示时域波形，频谱图和语谱图。-Based on the synthesis matlab DTMF digit dialing tone, and connected by a simple time domain, for further analysis synthesis results. DTMF2 the analysis section, time-domain waveform, spectrum and spectrogram displays the
Update : 2025-02-19 Size : 2kb Publisher : 沙源
[LabView] dtmf-encoder-decoder-matlab-gui-labview DL : 0: The present project aims to develop a DTMF (Dual Tone Multi Frequency) Encoder-Decoder using loopback technical and graphical interface to be developed by Labview program. The signal processing and the application code will be using TMS320C6713i card
Update : 2025-02-19 Size : 390kb Publisher : staNou
[matlab] work DL : 0: dtmf 信号产生于解码(The DTMF signal is generated by decoding)
Update : 2025-02-19 Size : 5kb Publisher : 斤斤