dtmf

abbr.

dual-tone multifrequency telephone 双音多频电话；

1. 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。

RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
Personal digital assistant module adapted for initiating telephone communications through DTMF dialing
Methodological Review: Health Dialog Systems for Patients and Consumers
Efficient dual-tone multifrequency detection using the nonuniform discrete Fourier transform
The value of time and reliability: measurement from a value pricing experiment
Distinct organization of methylcholanthrene- and phenobarbital-inducible cytochrome P-450 genes in the rat.
The SIP INFO Method
Avaaj Otalo:a field study of an interactive voice forum for small farmers in rural India
Voice extensible markup language (voicexml) version 2.0
REVIEW ARTICLE: Inorganic and hybrid nanostructures for optical limiting