A lot of audio out there claims a specific frequency — 432 Hz, a solfeggio tone, a binaural beat at some stated Hz. This measures what's actually in the file, from the waveform itself, independent of whatever the title or description says.
Drop an audio file here
Or click to browse — WAV, MP3, FLAC, M4A. Nothing leaves your browser.
Spectrogram
Stable Frequency Segments
Every stretch where a carrier tone actually held steady long enough to trust — no whole-file averaging. Each one comes straight from the same scan as the Session Event Log below, filtered to just the segments with a real detected tone.
Timeline — How The Beat Changes Over The Session
▬ binaural beat frequency ▬ masking layer level (dB)
Session Event Log
Whole-file scan, ~s resolution. Masking-layer dB is a relative, uncalibrated level — compare it across this file, not between files.
Library
Every file you've saved to the library, stacked for an at-a-glance scan across a whole series. Saved to this browser only — stays on this machine, not uploaded anywhere.