Android App - DTMF (modified) detector
Budget: $30 – $250 USD
Android software for recognizing modified DTMF tones - Modified Dual-Tone Multi-Frequency” when captured by the cell phone's microphone.
Modified M-DTMF tones correspond to the frequencies of the original DTMF tones, multiplied by 14.
M-DTFM set of lower frequencies (9758 Hz, 10780 Hz, 11928 Hz, 13174 Hz)
M-DTFM Set of upper frequencies (16926 Hz, 18704 Hz, 20678 Hz, 22862 Hz).
The software must run in the background and display the received number on screen.
If the M-DTMF audio pickup by microphone matches the pre-recorded number stored in a table at program memory, then the software should issue an alert.
Modified M-DTMF tones correspond to the frequencies of the original DTMF tones, multiplied by 14.
M-DTFM set of lower frequencies (9758 Hz, 10780 Hz, 11928 Hz, 13174 Hz)
M-DTFM Set of upper frequencies (16926 Hz, 18704 Hz, 20678 Hz, 22862 Hz).
The software must run in the background and display the received number on screen.
If the M-DTMF audio pickup by microphone matches the pre-recorded number stored in a table at program memory, then the software should issue an alert.