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GitHub - repoalpha/DTMF_encoder: DTMF audio sample …
https://github.com/repoalpha/DTMF_encoder
The DTMF tones are saved as a audio wave file which can be played back by play_wave.py. The generated DTMF digits used in the .wav sample are stored also as a .csv metafile for supervised learning. A script is provided to print out details of the .wav file generated.
Dual Tone Multi Frequency (DTMF) - Signal Identification …
https://www.sigidwiki.com/wiki/Dual_Tone_Multi_Frequency_(DTMF)
DTMF is a signaling mode used for a variety of purposes. It's most known for telephony dialing, but is in use for many different applications such as DTMF paging for DTMF-enabled VHF / UHF radios and as a marker on broadcasting stations for switching between regional and local programming for events like local news broadcasting.
Signal Generator: Dtmf - Nitrocosm
https://signals.nitrocosm.com/go/dtmf/
Audio Sample Rate: Volume: DTMF tones are typically used in telephone systems. After submitting the form, the resulting file will download to your computer. ...
Online DTMF Tone Generator - Audio Check
https://www.audiocheck.net/audiocheck_dtmf.php
Dual-Tone Multi-Frequency (DTMF) is the signal that you generate when you press an ordinary telephone's touch keys. Over the years, DTMF has replaced Pulse dialing, the early type of telephone dialing in which short pulses were used to relay the dialed number. With DTMF, each keypress on your phone generates tones made of two specific frequencies.
Frequency detection - DTMF fractions removal using ...
http://dataandsignal.com/frequency-detection/
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