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Audio spectrogram app for iphone: “SpectrumView” by Oxford Wave Research (free, but costs $2 to unlock the zoom feature)

Whistling from low note to high note

Guitar, D string (fundamental is 150 Hz)

Irish flute in D, with all the holes closed

wiki/spectrograms.txt · Last modified: 2019/10/28 15:14 by ethanminot