Tracks
First analyzed track is treated as your mix; the rest form the reference set.
| Track | LUFS | Sample peak | Est. true peak | RMS | Crest | Correlation | Clips |
|---|
BATCH AUDIO ANALYSIS
LoudnessBatch
Compare mixes and references on integrated loudness, peaks, RMS, crest factor, clipping, DC offset and stereo correlation. Files decode and analyze locally in your browser.
Integrated loudness follows BS.1770-style K-weighting and two-stage gating on a 48 kHz analysis path. Browser V1 reports estimated true peak; the native roadmap retains the stricter true-peak implementation.
Choose files to analyze.
Reference comparison
Loudness
Crest / dynamics
Stereo correlation
Measurement notes
ITU-R BS.1770-5 defines 400 ms loudness gating blocks with 75% overlap, an absolute gate at −70 LKFS/LUFS and a relative gate 10 LU below the absolute-gated result. LoudnessBatch uses those rules for browser integrated loudness. EBU R 128 uses −23 LUFS as its programme target; this tool does not treat one loudness target as universally correct for music.
Estimated true peak uses browser-side interpolation in this V1 and is deliberately labeled as an estimate rather than a compliant dBTP meter.