[jmpman]

Side note, I was playing with your app on my piano, checking each key. I noticed that the lowest keys didn't actually have the lowest values in your app. Maybe I'm misunderstanding how the app works?

[arjf]

Most likely microphone lower range limitation. The fundamental frequency is out of the microphone’s range, so you only see the harmonics.

[jmpman]

Can you reduce the lower limit? I think my piano is tuned to just under that lower frequency and thus those fundamentals aren't showing up.

[jmpman]

Dang. I wanted to try tuning my piano.