Media

Audio Analyzer

Turn your browser into a local audio field instrument. Grant microphone access and inspect waveform, spectrum bars, RMS, peak level, dBFS and rough zero-crossing frequency. Audio is not recorded or uploaded.

Browser-local microphone, demo signal, or audio file analysis. No audio is uploaded.

device check

Checking audio input devices...

RMS
0.000
Peak
0.000
dBFS
-∞
Zero-cross est.
0 Hz
waveform
live FFT spectrum
practical read
mode: idle

RMS tracks average level, peak catches clipping risk, dBFS is a digital level estimate, and Zero-cross est. is a rough frequency hint. Live mic/demo mode uses Web Audio FFT bins for the spectrum view; file mode shows a downsampled amplitude profile rather than a true offline FFT. Treat this as a debugging instrument, not a calibrated acoustics meter.

runtime

Browser-local execution

Inputs stay inside the current tab unless you copy, download or explicitly export.

memory

Session handoff

Magic Paste can pass input to a target tool through sessionStorage, never through the URL.

control

User-owned state

Favorites, recent tools and workflow history are local browser data you can clear from the browser.

smart handoff graph

Suggested next moves

session handoff ready
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sponsor

Fixed native slots for developer products. No third-party tracking, no popups, no layout shift.

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01

How to use

  1. 01Click Start mic and allow microphone access.
  2. 02Watch waveform, frequency spectrum and level metrics update live.
  3. 03Use Stop to release the microphone when finished.
02

FAQ

Is audio uploaded or recorded?
No. The Web Audio API analyzes the microphone stream inside your browser. The tool does not record, save or upload audio.
Is this a calibrated sound meter?
No. RMS, peak, dBFS and rough pitch are useful debugging signals, but not calibrated acoustic measurements.
03

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