Hacker News Reader

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?

View on HN

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

Dang. I wanted to try tuning my piano.

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.

Reply on news.ycombinator.com