Tone & Spectrum
Generate a sine tone through your speakers and watch your microphone hear it back. The spectrum below shows the live FFT of whatever your mic is picking up — the tone, room reflections, and ambient noise.
Tone Generator
440 Hz
Microphone Spectrum
Microphone is off
≈ 11.72 Hz/bin
Mic will enable on first interaction.
Tip: use headphones to avoid feedback. With speakers, you'll see (and hear) the tone loop back into the mic — that's part of the demo.