给出了双音多频发送电路的分立元件实现方法。
The realization of the DTMF circuit using discrete components was presented in this paper.
本文介绍一种DTMF（双音多频）通信方式的远程测控系统。
This paper presents a detection and control system in which the DTMF method is used to realize data communication.
该系统由以单片机at89c51和双音多频mt8870解码芯片为核心的系统硬件及软件组成。
It is composed of software and hardware, with single chip AT89C51 and DTMF decoding chip MT8870 as its cores.
介绍了一种计算机通过利用双音多频(DTMF)码进行控制的多媒体数学集中控制系统的工作原理。
The authors introduce a principle that the computer controls the multimedia teaching centralized monitoring system by using of DTMF.
介绍了一种计算机通过利用双音多频(DTMF)码进行控制的多媒体数学集中控制系统的工作原理。
The authors introduce a principle that the computer controls the multimedia teaching centralized monitoring system by using of DTMF. This method is simple and dependable.
这些模块包括振铃检测模块、来电过滤模块、双音多频解码模块、语音提示模块和单片机控制驱动模块。
These modules include the ring detection module, call filtering module, dual-tone multi-frequency decoder modules, voice prompt module and microprocessor controlled driver module.
双音多频是一种在话音信道用音调来表示数字的方法，它可以用来在模拟话音信道传输信令，因此在通信中有广泛的应用。
Provide is a voice channel and tone to represent Numbers method, which can be used to transmit analog voice, so in communication has been widely used.
在传输网络中，音频适配器采用双音多频芯片MT8880实现数据格式的转换功能，对讲机则完成对转换后的音频信号收发功能；
In the transmission network, the audio adapter adopts MT8880 to transform the data format and the wireless interphone is to transmit and receive the audio signal.
双音多频(DTMF)是一种在话音信道用音调来表示数字的方法，它可以用来在模拟话音信道传输信令，因此在通信中有广泛的应用。
Provide (DTMF) is a voice channel and tone to represent Numbers method, which can be used to transmit analog voice, so in communication has been widely used.
双音多频(DTMF)是一种在话音信道用音调来表示数字的方法，它可以用来在模拟话音信道传输信令，因此在通信中有广泛的应用。
Provide (DTMF) is a voice channel and tone to represent Numbers method, which can be used to transmit analog voice, so in communication has been widely used.
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