interactive example

Tone playground

Generate arbitrary tones and watch the spectrum respond.

FIG. 1 — TONE PLAYGROUNDfft: 4096 pt · hann · 11.7 Hz/bin · @sonoglyph/dsp

(1) oscillators

osc 1

frequency440 Hz

amplitude0.70

osc 2

frequency880 Hz

amplitude0.35

osc 3

frequency1209 Hz

amplitudeoff

noiseoff

(2) signal · first 10 ms

(3) spectrum · 0–4.5 kHz

peaks: 439.9 Hz (0.72) · 880.1 Hz (0.35)

(1) three oscillators and a noise source, summed · (2) the first 10 ms of the signal · (3) FFT magnitudes with detected peaks — hover for exact values. An amplitude of zero switches an oscillator off.