Album Loudness Matcher

Upload the tracks (files or one ZIP, up to 20). Every track is measured with the EBU R128 chain (integrated LUFS, true peak), and the album loudness is summed with the R128 segment formula — the same energy-weighted math ReplayGain album gain uses, so a 40-second interlude does not get crushed to match a 5-minute anthem. Album mode then applies ONE gain (target − album loudness) to every track: the quiet ballad stays quieter than the loud single, exactly as mastered, which is how loudness normalization on streaming platforms treats an album anyway. Hybrid mode keeps every inter-track difference inside a tolerance band you set (default 2 LU) and only pulls outliers back toward the band — quiet intro and loud finale survive, the one misdelivered -8 LUFS demo gets tamed. Per-track mode normalizes each file to the same loudness for playlists and sync libraries. True-peak safety is always on: if the planned gain would push a track past your dBTP ceiling (default -1), album mode lowers the whole album’s gain to keep the record coherent, while the other modes trim that track or — with the limiter switch — run a true-peak limiter stage instead (attack 5 ms, release 50 ms, level disabled). Renders are lossless (WAV/FLAC), every output is re-measured so the report shows measured-after values, and everything lands in a ZIP with a per-track CSV gain sheet.