The TinySA is kind of like a tiny radio, just tuning through the channels and measuring how loud at each frequency. And it managed to leverage an exiting chip

The TinySA is kind of like a tiny radio, just tuning through the channels and measuring how loud at each frequency. And it managed to leverage an exiting chip (designed for other purposes), which is how it got to be so cheap. This is a great explanation of the signal path: https://www.youtube.com/watch?v=z63cXhYzS1A https://www.youtube.com/watch?v=z63cXhYzS1A