3 ms·
Couldn't you figure out the resonant frequency automatically by hitting the glass with a few impulses from the speaker and looking at the response? That'd be a
by baobrien 9y ago
Couldn't you figure out the resonant frequency automatically by hitting the glass with a few impulses from the speaker and looking at the response? That'd be a fun signal processing exercise.
- jsjohnst 9y agoI’m not a sound expert, but I’m curious how you think this would work?
- hedora 9y agoWhen the glass starts resonating, it should start prouducing sound too, so you should be able to hear two frequencies as you get close to the right frequency — I think. (Not a sound expert either)
- sannee 9y agoApplying fourier transform to impulse response results in the frequency response: https://docs.scipy.org/doc/scipy/reference/generated/scipy.signal.freqz.html https://docs.scipy.org/doc/scipy/reference/generated/scipy.s... I think this would work only if the system in question is reasonably linear though, which wine glass might not be (?)
- pletnes 9y agoTechnically speaking, you don’t need to know the frequency response in detail, or whether it’s exactly linear. If the glass «sings» at a given frequency after being whacked by a short impulse, that’s a resonant frequency.