英语词汇“dual tone multi-frequency (DTMF)”的翻译、意思、用法、释义-英汉经管词典

单词	dual tone multi-frequency (DTMF)
释义	dual tone multi-frequency (DTMF) Definition Touch tone' used in non-rotary type dial (push button) phones. DTMF uses a combination of two (one low frequency and one high frequency) tones to identify the dialed number or a signal. Eight such frequencies are assigned to the four rows and four columns of a typical push-button type dial (keypad). All modern modems also generate DTMFs.
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