Dynamic Range Checker
Dynamic Range Checker
Detect over-compressed, fatiguing audio. We measure Loudness Range (LRA) so you can spot tracks that have been squashed flat by heavy limiting.
Drop audio or video here
or click to choose a file
Content type
Music masters typically span 6+ LU; thresholds tuned for songs and instrumentals.
How to use
- Drag a file in, or click the dropzone to choose one.
- Click Analyze. We run a single ITU-R BS.1770 pass to measure LRA, LRA low, and LRA high — typical 5-minute files take under 30 seconds.
- Read the verdict. Copy the result if you need to share it.
What this checks
Loudness Range (LRA) is the BS.1770 dynamic range estimator: the band between the 10th- and 95th-percentile short-term loudness, measured in LU. Higher is wider — more breathing room for transients and quiet passages.
Music masters: pass at LRA ≥ 6 LU, warn 4–6 LU, fail below 4 LU. Voice / podcast: pass ≥ 3 LU, warn 1.5–3 LU, fail below 1.5 LU. Speech naturally lives in a narrower band than music — pick the content type that matches your file so the verdict is fair.
Privacy
Your file stays in your browser. Loudness range is measured locally with ffmpeg.wasm. Nothing is uploaded.