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DTMF信号の「4」です。 ポーズ1ms → 信号（770Hz＋1,209Hz）75ms → ポーズ49ms の順に流れます。 It is "4" for the DTMF signal. Pause: 1ms → signal (770Hz+1,209Hz): 75ms →, pause: 49ms.
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Learn moreListen to DTMF_4 by Ryota Tsutsumi MP3 song. DTMF_4 song from Ryota Tsutsumi is available on Audio.com. The duration of song is 00:01. This high-quality MP3 track has 181.616 kbps bitrate and was uploaded on 8 Dec 2024. Stream and download DTMF_4 by Ryota Tsutsumi for free on Audio.com – your ultimate destination for MP3 music.
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