LUFS is Loudness Units Full Scale, the ITU-R BS.1770-4 / EBU R128 standard for perceived loudness. Unlike RMS, it uses K-weighting mimicking human head as rigid sphere.
Stage 1 High-shelf 1681.97445 Hz +3.999843 dB Q 0.707175 — exact 48kHz coeffs: b0=1.53512485958697 b1=-2.69169618940638 b2=1.19839281085285 a1=-1.69065929318241 a2=0.73248077421585
Stage 2 RLB High-pass 38.13547 Hz Q 0.500327 — b0=1 b1=-2 b2=1 a1=-1.99004745483398 a2=0.99007225036621 — y[n]=b0x[n]+b1x[n-1]+b2x[n-2]-a1y[n-1]-a2y[n-2]
400ms blocks 75% overlap (100ms hop). Absolute gate -70 LUFS removes silence. Relative gate -10 LU below ungated. Your file HAYDI DÖN.WAV (2ch 48kHz 16bit 33.89MB) — Integrated -14.05 LUFS True Peak -3.08 dBTP Short-Term -11.88 Momentary -11.23 LRA 3.30 LU PLR 10.97 / PSR 8.80 Relative -24.07 dBFS — exactly lufs.org, wutools -14.0 / -3.1 PASS, SoundBoost -14.0. Old RMS tools show -17.5 — 3.4 dB off.
Spotify, YouTube, Tidal, Pandora normalize to -14 LUFS. Apple Music -16. Bandcamp -14/-13. Upload -8 and platform turns DOWN -6 dB losing punch. Target -14 with true peak -1.0 dBTP.