PRIVATE AUDIO WORKSPACE

Audio Analyzer

Waveforms, frequency analysis and clipping insights—right in your browser.

Audio Studio

Sample peak ↗

—Highest sampled amplitude · dBFS

RMS level ≈

—Average signal power · dBFS

Clipped samples ⚑

—At or above −0.00027 dBFS

Crest factor ◇

—Peak minus RMS · dB

TIME DOMAIN

Waveform overview

Open an audio file to view its waveform

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Every sound has a shape.Upload a file or try our sample to start exploring.

00:00.0Playhead: 00:00.000:00.0

PERCEPTUAL LEVEL ESTIMATE

Loudness over time

K-weighted momentary level · mono/stereo · exploratory estimate

Integrated loudness—Estimated LUFS · not certified

FREQUENCY DOMAIN

Spectrum & spectrogram

Find tonal peaks and track energy across frequencies.

Open audio to inspect its frequency contentFFT analysis · mean channel power

How to read these measurements

Waveform

Signal amplitude over time. Tall peaks may indicate transients or near-clipping.

Spectrum

Frequency strength for the analyzed region. A prominent peak can indicate a dominant tone. Two-channel power spectra avoid false cancellation when channels oppose in phase.

RMS vs loudness

RMS in dBFS measures unweighted sample power; the estimated LUFS display applies K-weighting and gating for mono/stereo files.

Your audio stays yours

Audio is decoded and analyzed in memory on this device. No audio is uploaded and no remote processing services are used. Microphone access is requested only on demand, and stops on request or page exit. Saving summaries is optional and stores measurements only—not raw audio—in this browser. Clearing site data removes them. Export JSON if you want an independent backup.

Analysis is intended for technical inspection, not calibrated professional compliance measurement: estimated LUFS is based on K-weighting and 400 ms gating but is not conformance-certified; true peak, acoustic SPL, and hearing safety are not measured. Two-channel correlation is offered as a phase-compatibility clue, not a definitive mono-compatibility guarantee. Supported codecs depend on the browser. The site must be served over HTTPS or localhost for microphone access.

Using Audio Analyzer

Open supported audio or start microphone analysis with browser permission. Inspect the waveform, choose a region and compare the signal views before exporting a report.

Loudness estimates are not conformance-certified, and sample peaks are not intersample true peaks. Browser decoding does not establish original-file sample-rate metadata. Live microphone and file-analysis measurements have different limits.

Choose audio measurements, chart images or a report

File analysis: inspect browser-decoded audio and the selected region. The decoding sample rate is not proof of the original file's metadata.

Microphone snapshot: analyze supported live input with permission. Its available measurements differ from full-file analysis.

JSON, CSV or HTML: share the supported analysis data or a viewing report. Chart PNGs are pictures of signal views, not audio recordings.

Practice: compare two regions of one recording

Open a short recording you own and select a quiet region, then a louder region.

Compare sample peak and RMS while keeping the same source and noting each selected interval.

Export a report with enough context for the reader to identify the source and region.

This is an authored analysis exercise, not a calibrated measurement or supplied report.

Audio analysis questions

Can I use the loudness estimate as a broadcast compliance certificate?

No. Loudness is estimated, and sample peaks are not intersample true peaks. Use a suitable independently validated measurement workflow when formal compliance is required.

Does an analysis report contain my original recording?

A report documents measurements and supported signal data; it is not a replacement for the audio file. Keep the original separately, and distinguish a file analysis from a microphone snapshot when interpreting results.