audio spectrogram
a scrolling picture of sound: time goes left to right, pitch bottom to top, and brightness shows loudness.
runs on your device · free · no sign-up
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frequently asked questions
how do i read a spectrogram?
low sounds sit at the bottom, high sounds at the top. bright lines are loud tones, and harmonics appear as stacked lines.
what frequency range is shown?
from 0 up to 12 khz, with the bottom stretched so bass and voice detail are easy to see.
is my audio uploaded?
no, it is analyzed locally with the web audio api.