Reminded me of my high school physics project on tuning a guitar using beats on harmonics: https://en.m.wikipedia.org/wiki/Beat_(acoustics) https://en.m.wikiped

Reminded me of my high school physics project on tuning a guitar using beats on harmonics: https://en.m.wikipedia.org/wiki/Beat_(acoustics) https://en.m.wikipedia.org/wiki/Beat_(acoustics)