Python application to generate DTMF tones to phone numbers.
To facilitate the install process you can use Pipenv and execute the following command to create the virtual environment with Python dependencies to execute the application:
pipenv install
You can run the application using:
pipenv run python dtmf-generator.py -p PHONE_NUMBER -f SAMPLE_FREQ -t TONE_DURATION -s SILENCE_DURATION -a AMPLITUDE -o FILENAME_OUTPUT -d
Where PHONE_NUMBER represents the phone number that you want convert to DMTF tones, SAMPLE_FREQ is the sampling frequency to generate tones, TONE_DURATION defines the duration in seconds for each tone, SILENCE_DURATION defines the duration in seconds for each silence between tones, AMPLITUDE defines the amplitude of the sine wave signal, FILENAME_OUTPUT is the filename to WAV file output, and -d is an optional flag to activate the debug mode which enable a graph with the frequency plot of the tones perceived in each time. For example you can use the following:
pipenv run python dtmf-generator.py -p 12345 -f 20000 -t 0.08 -s 0.08 -o test.wav -d
You can verify if the tones were correctly generated using the DialABC site, where you should upload the output of DTMF Generator. You should observe the same phone number input in the site output.