This automated scenario validates a -19 LUFS mono playback-equivalent working target, not a universal platform acceptance rule. Apple currently recommends audio around -16 LKFS (+/-1) and true peak no higher than -1 dBFS without publishing a separate mono target. AES TD1008 documents the 3 LU change that can occur when mono is duplicated to two channels and recommends correct channel metadata or player compensation. The separate stereo scenario validates genuine two-channel processing against Apple's published recommendation.
| Profile | Channels | Integrated Loudness | True Peak Ceiling | Coverage | Basis |
|---|
| Apple Podcasts recommendation | Stereo | -16 LUFS | -1 dBTP | Not tested in this run | Around -16 LKFS (+/-1) and true peak no higher than -1 dBFS |
| Mono playback-equivalent convention | Mono | -19 LUFS | -1 dBTP | Tested in this run | Working target for raw mono files expected to be duplicated to stereo playback |