dual-tone multifrequency system (DTMF)

Decoding of DTMF signal with software;

双音多频信号的软件解码

The Novel Design of CPLD Application in DTMF Tone PCM Code;

基于CPLD的双音多频信号PCM编码的设计

Control for coder/encoder of DTMF with single chip microcomputer;

利用单片机实现对双音多频编/解码器的控制

Based on the microcontroller and Dual Tone Multi Frequency(DTMF) technique,TRCS has functions of the ringing detecting,the telephone lifting simulating,the DTMF demodulation and the on-off control.

该系统基于单片机和双音多频信号技术(DTMF),具有振铃检测、模拟摘机、DTMF信号解调、开关量控制等功能,并且使用ISD4004芯片进行语音提示。

The chip MT8880 which can receive and transmit the signal of Dual Tone Multiple Frequency can detect whether the signal of Dual Tone Multiple Frequency transmit on power line.

其以MT8880实现对双音多频信号的接收与发送,并由其侦听电力线上是否有双音多频信号在传输。

This paper presents a method to generate the signal of dual tone multiple frequency in the development of the cordless group phone.

介绍了在无绳集团电话研制中所采用的双音多频ＤＴＭＦ信号的一种实现方法，通过软件模拟不同的单音频率，并对其按一定的采样速率取样、叠加即得到相应的双音多频ＤＴＭＦ信号。

Detection of DTMF Signals Based on MATLAB

基于MATLAB的双音多频信号识别

Performance requirements of pushbutton dialer with DTMF

GB/T9035-1988电话用双音多频式按键号盘技术要求

Methods of measurement for pushbutton telephone with DTMF

GB/T12197-1990双音多频式按键电话机测试方法

Methods of measurement for pushbutton dialer with DTMF

GB/T12198-1990电话用双音多频式按键号盘测试方法

Performance requirements of pushbutton telephone with DTMF

GB/T9034-1988双音多频式按键电话机技术要求

Study on the Technology of DTMF Communications and Its Applications;

窄带网中双音多频编码通信技术及应用研究

Implementation of DTMF Tone Detection Based on Modified Goertzel Algorithm;

基于改进的Goertzel算法的双音多频检测器的设计

Design of Switched-Capacitors-Filter For DTMF Recevier

双音多频解码芯片中开关电容滤波器的设计

A method used by the telephone system to communicate the keys pressed when dialling.

双音多频：电话系统拨号时通过按键按下的事件来通讯。

Series and products of communication circuits for semiconductor integrated circuits--Products of dual-tone multi-frequency circuits

GB/T14027.4-1992半导体集成电路通信电路系列和品种双音多频电路系列品种

speech plus duplex FMFV telegraph equipment

语音加双工调频音频电报设备

The Design of Multiplepath Two-way Audio and Ethernet Signal Transmitting System Based on CPLD;

基于CPLD的多路双向音频及以太网传输系统的设计

Articulatory feature based on audio-visual speech recognition model

基于发音特征的音/视频双流语音识别模型

Research on Audio-Visual Feature-Based Video Content Detection;

基于音视频双重特征的视频内容分析技术研究

Design of Optical Fiber Transmission System Used for Transmitting Video、Audio and Data;

视频、音频、双向数据光纤传输系统的设计

Design of Audio Power Amplifier Based on Bipolar Process;

基于双极工艺的音频功率放大器设计

A Study on F0 Contour Model of Monosyllables and Disyllables in Standard Zhuang Language;

标准壮语单音节、双音节基频曲线建模研究

Polypaudio Manager is a simple GUI frontend for the polypaudio sound server.

多音频管理器是一款简单的面向多音频声音服务的图形用户界面。