Audio Mastering — Loudness for AI Music
Bring AI-made songs (Suno, Udio) or your own recordings to a loudness target such as −14 LUFS with a true-peak ceiling. Process an album with one setting, compare at equal loudness, save WAV or MP3. Nothing is uploaded.
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How to use
Everything you enter is processed only in this browser.
Add one track or a whole album
Pick a processing style, target loudness (LUFS) and peak ceiling, then press Master
Compare with the original at equal loudness and save as WAV, MP3 or ZIP
How it works and good to know
The PPUTROLL Master engine (signal processing, not machine learning) runs in a separate Web Worker in your browser, and audio is never sent to a server. The engine (about 6.8 MB) is downloaded only the first time you process. Each track can be up to 300 MB and 10 minutes at 48 kHz (28.8 million samples), with up to 20 tracks at a time. Before/after loudness is the integrated loudness (LUFS) and true peak (dBTP) measured by the engine; if the result differs from the target by more than 0.5 LU, the tool says so. Equal-loudness comparison only turns the louder version down during playback and does not change saved files. WAV is 24-bit with TPDF dither; MP3 is 320 kbps. Spotify documents −14 LUFS playback; the YouTube and Apple Music values (−14, −16) are widely measured figures.