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Equally Tempered Notes

Gram is used to find that the notes in bottle03.wav are at 440 Hz.

The beverage bottle is sounded empty and is found to have a resonant frequency equal to 200 Hz. A small amount of water, incidentally dyed red, is added to increase the resonance to 220 Hz.

Students use SigJenny to identify equally tempered notes from 220 Hz to 440 Hz.

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