Using SOX on a Raspberry Pi to generate TX Test Tones

This video shows a simple way to use almost any raspberry pi computer to generate audio signals that can be used to perform tests on amateur radio equipment.
The video uses an easily available program called SOX that has been a mainstay of DSP work on desktop platforms for decades. In this video SOX is installed on Raspbian "Bullseye" with the command:
sudo apt-get install sox
and it's run to generate a 1khz tone by the command:
play -V -n synth sin 1000
To generate 700/1600 two tone signals for SSB IMD tests the video then uses the command:
play -v -n synth sin 700 sin 1600 remix 1,2
Hope you enjoy this video!
FYI: This is the SOX home page on github - it's a great resource!
sox.sourceforge...

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