[Tade0]

My accelerometer apparently reads at 200Hz, but due to a lack of instrument at the ready I had to "pluck" the handle of the office fußball table.

When the right defender is near the center I'm reading ~24.74Hz, so slightly above G.

[tclancy]

This was the direct inspiration for Total Football: to find harmony with the pitch.

[virgil_disgr4ce]

heh, a subacoustic G#?

[Tade0]

I think the tuner is off by an octave - it has a lot of harmonics and sounded like a G on a bass guitar.

[shiandow]

It seems odd that it would be an octave too low. If it detected any harmonics it would be too high.

Unless it didn't function like a string at all, then the harmonics would be all wrong.

[cjbprime]

> If it detected any harmonics it would be too high.

I think it's not that simple. A tuner is "hearing" the fundamental and all of the harmonic overtones combined. It has to guess at which frequency is the fundamental, even if the overtones are actually stronger than it amplitude-wise, and it does that by looking at the nature of the repeating overtone pattern and extrapolating back to the fundamental.

I think you can end up an octave too low (half the actual frequency) if the waveform repeats in a way that implies a different overtone repetition pattern, for example if there's an every-other-cycle artifact to the waveform.