... multifrequency dial 多频拨号 tone multifrequency 双音色多频 multifrequency keying 多频键控 ...
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DTMF Dual Tone MultiFrequency 双音多频
dual tone multifrequency receiver 双音多频接收机
dual-tone multifrequency system 双音多频制
DTMF Dual-Tone Multifrequency Signaling 双音多频信号
Double Tone MultiFrequency 双音多频 ; 为解决方案
Tone Multifrequency Signaling 双音多频信号
DTMF Dual-Tone Multifrequency System 双音多频制
The system includes the dual-tone multifrequency signal detection module, the musical sound processing module, the harmonical analysis module of circularity and many other demonstration modules.
系统包括话机按键双音频信号识别、圆轮廓形状误差谐波分析、数字音频效果及原理性演示实验等。
Signaling took the form of a series of multifrequency (MF) tones, much like touch tone dialing between switches.
信号将一系列的方式多频(MF)音调,很像之间互动音频拨号开关。
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