Audio Lab — Boschkoo

BARS 4096-point FFT

Pick a source above.
MIC for live input · FILE to play an audio file · DEMO for a generated tone.

FREQUENCY BANDS

BASS · 20–250 Hz0

MID · 250–4 kHz0

TREBLE · 4k–20k Hz0

PEAK — RMS 0 BPM —

ANALYSER

FFT SIZE4096

SMOOTHING0.80

GAIN1.0

MIN DB-90

PALETTE

INFO

Real Web Audio API · AnalyserNode FFT up to 32 k.

12345 switch mode · Space play/pause file · S snapshot PNG.

BPM is estimated from auto-correlation on the bass band — stabilises after ~8 s of steady beat.