lxterminal --working-directory="/home/pi/IVRS" -e "bash -c \"source /home/pi/IVRS/venv/bin/activate;python src/app.py \""

apt-get install multimon-ng
multimon-ng -t wav -a DTMF other/audiocheck.net_dtmf_112163_112196_11#9632_##9696.wav 
https://www.reddit.com/r/amateurradio/comments/f0wmux/could_use_some_help_with_multimonng_for_decoding/
https://cloudacm.com/?p=3197
https://www.thegeekstuff.com/2009/05/sound-exchange-sox-15-examples-to-manipulate-audio-files/
sox -b 16 -e signed-integer -r 22k -c 1 -d -t wavpcm -| multimon-ng -c -a dtmf -
# record audio in python:
https://makersportal.com/blog/2018/8/23/recording-audio-on-the-raspberry-pi-with-python-and-a-usb-microphone

#recording from the mic
export AUDIODEV=hw:1
rec -r 8000 -c 1 record_voice.wav # it shows the visualisation of the sound wave

#sox command to record audio and dump in a wav file
sox -b 16 -e signed-integer -c 1 -d -t wavpcm tt.wav

#multimon-ng legends:
-a  = add demodulator (e.g. DTMF)
-t  = input file type
-c  = Remove all demodulators (must be added with -a <demod>).

# https://wk0.medium.com/send-and-receive-messages-with-the-telegram-api-17de9102ab78#:~:text=You%20can%20find%20it%20here,bot%20and%20an%20API%20token.
# https://gist.github.com/dideler/85de4d64f66c1966788c1b2304b9caf1
# https://www.freecodecamp.org/news/telegram-push-notifications-58477e71b2c2/

# **** V.V. IMP **** Just to be sure you have update send a 'hi' message first
curl https://api.telegram.org/bot{botID}:{API_key}/getUpdates
# obtain chat Id from the output of prev command
curl -X POST \
     -H 'Content-Type: application/json' \
     -d '{"chat_id": "{chatId from prev step}", "text": "This is a test from curl", "disable_notification": true}' \
     https://api.telegram.org/bot{botID}:{API_key}/sendMessage