Deep Audio Analyzer Web • iOS Ready

Drop in or record audio to inspect waveform, loudness, dynamics, spectral shape, tempo, key, and more – all in your browser.

Input & Visuals
Offline, on-device analysis
Files must be local (no DRM). Recording requires mic permission and HTTPS / localhost.
Duration
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Sample Rate
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Peak Level
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RMS Level
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Tempo
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Estimated Key
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Waveform overview Time-domain amplitude (first channel)
Average spectrum DFT over multiple windows • magnitude vs frequency
Load or record audio to begin analysis.
Idle
Analysis Details
Per-channel, spectral, tempo & key
Metrics
No audio loaded. Select a file or record audio on the left to see per-channel peaks, RMS, crest factor, DC offset, zero-crossing rate, spectral features, tempo (BPM), and estimated musical key.
Notes:
  • Levels are relative (dBFS) – 0 dBFS represents full scale (absolute peak = 1.0).
  • Spectral metrics and key are computed from averaged DFT windows.
  • Tempo is estimated via envelope autocorrelation; very complex or free-time audio may give ambiguous results.