Show HN: Simple Tool to Hear and Visualize the Overtone Series

Very nice, I always love your tools! My phone can barely produce 55 Hz output, maybe a slider for changing the fundamental frequency would be interesting?

Also, I think the email sign-up at the end is not working properly: I entered my email address then pressed Enter (or "SUBSCRIBE!"?). I was then redirected to mail chimp with a red error message saying something like "too many sign-ups from this address" or similar, with the address mentioned being blank.

My cats really don't like this page, it seems…

Nice. A couple of quick thoughts:

- It might be educational to show the sum of sine waves in addition to the components.

- 55 Hz is really low as the base frequency. I think going up a tiny bit would make it easier to hear the base frequency as you add overtones.

- I think the counting you use might be nonstandard: what’s called the “1st harmonic” should actually be the second harmonic, twice the fundamental frequency. But please double check me there.

Very cool! I wish the frame with the string visual wouldn't disappear when no tones were playing. On mobile I wanted to hear one tone at a time, each in succession, but the page jumped around whenever I clicked on/off a single tone, so it was hard to use it in that way.

That is a nicely polished site. Love the chord cheat sheet.