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- the DTMF communication 双音频接收发送
- Generation and detection of the DTMF signals. DTMF信号的产生和检测。
- AT89C51 single-chip microcomputer control chip, the letter means the use of anti-interference ability, high reliability and the DTMF signal and FM simplex radio communication. 主控芯片采用AT89C51单片机,信方式采用抗干扰能力强、可靠性高的DTMF信号和单工调频的无线通信方式。
- The DTMF map is calculated from the user's first name, last name, and e-mail alias. 通过用户的名、姓和电子邮件别名计算出DTMF映射。
- Safety Alert System By DTMF Communication mode 采用DTMF方式通信的安全报警系统
- The realization of the DTMF circuit using discrete components was presented in this paper. 给出了双音多频发送电路的分立元件实现方法。
- This permitted us to receive the DTMF tones by our system's DTMF Receiver if any number was pressed on the keypad. 它还可以选用呼叫进展方式工作，通过呼叫进展滤波器来检测特定通带内的信号频率，供微处理机或计数器电路分析，以确定检测到的呼叫进展音的性质。
- Abstract： The realization of the DTMF circuit using discrete components was presented in this paper. 摘 要： 给出了双音多频发送电路的分立元件实现方法。
- The schematic for the DTMF decoder in the figure below. Again you can use a combination of wire wrapping and soldering. Part placement is not critical. 下图为DTMF解码器的示意图。你还可使用焊锡及漆包线。元器件的放置无需挑剔。
- If no operator extension has been configured on the speech-enabled auto attendant, the DTMF fallback auto attendant, or the dial plan, the system will respond by saying, "Sorry. 如果未在已启用语音的自动助理、DTMF回退自动助理或拨号计划上配置操作员分机,则系统将回应说:“对不起。
- This paper also an example of the DTMF experiment,programmes according to the related function , translates and edits and links to the main program to verify the result. 以双音多频(DTMF)实验为例 ,根据相关函数编写了功能程序模块 ,并与主程序连接 ,进行编译和运行 ,使实验结果得以验证
- Mainly includes the ringing module, the telephone condition examination module, the echo counterbalance module, the DTMF code gathering module designing and the realization. 主要包括振铃模块、话机状态检测模块、回音抵消器模块、DTMF码采集模块的设计和实现。
- The wind whirled the dead leaves about. 风吹得枯叶在四处回旋。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
- A Managing System of the Watt-hour Meter by DTMF Communication Mode 采用DTMF方式通信的电度表管理系统
- There are 26 letters in the English alphabet. 英语字母表中有26个字母。
- Foreign nationals were asked to leave the country. 外国侨民被要求离开该国。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
