Basis: Legacy working reference.
Deezer has historically described a -15 LUFS normalization target, but it is not a current public delivery requirement. These checks validate the APU product recipes on deterministic stereo material; they do not certify platform or broadcaster acceptance.
Sources: Deezer normalization discussion
| Project | Status | Result |
|---|---|---|
| Leveler | PASS | Validates complete-program Deezer Stereo Reference delivery after Learn and lock; isolated renders remain diagnostics. |
| Meter | PASS | Checks the Leveler program delivery and isolated diagnostics with the proposed monitoring view. |
| Optimizer | PASS | Exports Deezer Stereo Reference delivery candidates from source fixtures. |
| Limiter | PASS | Renders Deezer Stereo Reference candidates through the loudness and true-peak limiters. |
| Compressor | PASS | Checks complete-program Deezer Stereo Reference delivery after source-to-target compression; isolated renders remain diagnostics. |
| Status | Time | Condition / Message |
|---|---|---|
| PASS | 12:10:25 | Deezer Stereo Reference / Pop vocal soft - Chill Winston: source fixture preserves 2 channel(s) |
| PASS | 12:10:26 | Deezer Stereo Reference / Dynamic piano neutral - Marko Maksimovic: source fixture preserves 2 channel(s) |
| PASS | 12:10:26 | Deezer Stereo Reference / Instrumental groove hot - Nova Notion: source fixture preserves 2 channel(s) |
| PASS | 12:10:26 | Deezer Stereo Reference / Pop vocal soft - Chill Winston: fixture is stereo |
| PASS | 12:10:26 | Deezer Stereo Reference / Pop vocal soft - Chill Winston: fixture contains distinct left and right channels |
| PASS | 12:10:26 | Deezer Stereo Reference / Dynamic piano neutral - Marko Maksimovic: fixture is stereo |
| PASS | 12:10:26 | Deezer Stereo Reference / Dynamic piano neutral - Marko Maksimovic: fixture contains distinct left and right channels |
| PASS | 12:10:26 | Deezer Stereo Reference / Instrumental groove hot - Nova Notion: fixture is stereo |
| PASS | 12:10:26 | Deezer Stereo Reference / Instrumental groove hot - Nova Notion: fixture contains distinct left and right channels |
| PASS | 12:10:26 | Deezer Stereo Reference / Deezer Stereo Reference stereo stress sequence: fixture is stereo |
| PASS | 12:10:26 | Deezer Stereo Reference / Deezer Stereo Reference stereo stress sequence: fixture contains distinct left and right channels |
| PASS | 12:10:27 | deezer-stereo-leveler-learn-program: rendered sample rate is 44100 Hz |
| PASS | 12:10:27 | deezer-stereo-leveler-learn-program: rendered output preserves 2 channel(s) |
| PASS | 12:10:29 | deezer-stereo-leveler-apply-lie2me_pop_vocal_soft: rendered sample rate is 44100 Hz |
| PASS | 12:10:29 | deezer-stereo-leveler-apply-lie2me_pop_vocal_soft: rendered output preserves 2 channel(s) |
| PASS | 12:10:29 | deezer-stereo-leveler-apply-lullaby_piano_neutral: rendered sample rate is 44100 Hz |
| PASS | 12:10:29 | deezer-stereo-leveler-apply-lullaby_piano_neutral: rendered output preserves 2 channel(s) |
| PASS | 12:10:29 | deezer-stereo-leveler-apply-you_make_me_feel_instrumental_hot: rendered sample rate is 44100 Hz |
| PASS | 12:10:29 | deezer-stereo-leveler-apply-you_make_me_feel_instrumental_hot: rendered output preserves 2 channel(s) |
| PASS | 12:10:29 | deezer-stereo-leveler-apply-program: rendered sample rate is 44100 Hz |
| PASS | 12:10:29 | deezer-stereo-leveler-apply-program: rendered output preserves 2 channel(s) |
| PASS | 12:10:29 | Mastering - Deezer Reference (Stereo): rendered delivery candidates are inside the Deezer legacy reference Integrated LUFS window |
| PASS | 12:10:29 | Mastering - Deezer Reference (Stereo): rendered candidates are inside the Deezer legacy reference sample-peak ceiling |
| PASS | 12:10:29 | Mastering - Deezer Reference (Stereo): rendered candidates are inside the Deezer legacy reference true-peak ceiling |
| PASS | 12:10:29 | Mastering - Deezer Reference (Stereo): rendered candidates produced finite active-speech dynamics diagnostics |
| PASS | 12:10:29 | Mastering - Deezer Reference (Stereo): rendered candidates preserve 2 channel(s) |
| PASS | 12:10:29 | Mastering - Deezer Reference (Stereo): rendered candidates preserve distinct channel content |
| PASS | 12:10:29 | Mastering - Deezer Reference (Stereo): Learn and lock workflow (learn_output=-15.10 LUFS, locked_delta=+0.10 dB) |
| PASS | 12:10:31 | Integrated LUFS validation view / Pop vocal soft - Chill Winston: Meter produced finite source measurements |
| PASS | 12:10:31 | Integrated LUFS validation view / Pop vocal soft - Chill Winston: Meter produced finite output measurements |
| PASS | 12:10:31 | Integrated LUFS validation view / Dynamic piano neutral - Marko Maksimovic: Meter produced finite source measurements |
| PASS | 12:10:31 | Integrated LUFS validation view / Dynamic piano neutral - Marko Maksimovic: Meter produced finite output measurements |
| PASS | 12:10:31 | Integrated LUFS validation view / Instrumental groove hot - Nova Notion: Meter produced finite source measurements |
| PASS | 12:10:31 | Integrated LUFS validation view / Instrumental groove hot - Nova Notion: Meter produced finite output measurements |
| PASS | 12:10:31 | Integrated LUFS validation view / Deezer Stereo Reference stereo stress sequence: Meter produced finite source measurements |
| PASS | 12:10:31 | Integrated LUFS validation view / Deezer Stereo Reference stereo stress sequence: Meter produced finite output measurements |
| PASS | 12:10:31 | Sample peak check / Pop vocal soft - Chill Winston: Meter produced finite source measurements |
| PASS | 12:10:31 | Sample peak check / Pop vocal soft - Chill Winston: Meter produced finite output measurements |
| PASS | 12:10:31 | Sample peak check / Dynamic piano neutral - Marko Maksimovic: Meter produced finite source measurements |
| PASS | 12:10:31 | Sample peak check / Dynamic piano neutral - Marko Maksimovic: Meter produced finite output measurements |
| PASS | 12:10:31 | Sample peak check / Instrumental groove hot - Nova Notion: Meter produced finite source measurements |
| PASS | 12:10:31 | Sample peak check / Instrumental groove hot - Nova Notion: Meter produced finite output measurements |
| PASS | 12:10:31 | Sample peak check / Deezer Stereo Reference stereo stress sequence: Meter produced finite source measurements |
| PASS | 12:10:31 | Sample peak check / Deezer Stereo Reference stereo stress sequence: Meter produced finite output measurements |
| PASS | 12:10:31 | True peak check / Pop vocal soft - Chill Winston: Meter produced finite source measurements |
| PASS | 12:10:31 | True peak check / Pop vocal soft - Chill Winston: Meter produced finite output measurements |
| PASS | 12:10:31 | True peak check / Dynamic piano neutral - Marko Maksimovic: Meter produced finite source measurements |
| PASS | 12:10:31 | True peak check / Dynamic piano neutral - Marko Maksimovic: Meter produced finite output measurements |
| PASS | 12:10:31 | True peak check / Instrumental groove hot - Nova Notion: Meter produced finite source measurements |
| PASS | 12:10:31 | True peak check / Instrumental groove hot - Nova Notion: Meter produced finite output measurements |
| PASS | 12:10:31 | True peak check / Deezer Stereo Reference stereo stress sequence: Meter produced finite source measurements |
| PASS | 12:10:31 | True peak check / Deezer Stereo Reference stereo stress sequence: Meter produced finite output measurements |
| PASS | 12:10:31 | Pop vocal soft - Chill Winston: offline Deezer legacy reference gate reference (Integrated LUFS=-14.89 LUFS, class=inside, sample_peak=-6.22 dBFS, class=inside, meter_true_peak=-5.82 dBTP, class=inside) |
| PASS | 12:10:31 | Dynamic piano neutral - Marko Maksimovic: offline Deezer legacy reference gate reference (Integrated LUFS=-15.88 LUFS, class=inside, sample_peak=-1.30 dBFS, class=inside, meter_true_peak=-1.29 dBTP, class=inside) |
| PASS | 12:10:31 | Instrumental groove hot - Nova Notion: offline Deezer legacy reference gate reference (Integrated LUFS=-14.67 LUFS, class=inside, sample_peak=-2.96 dBFS, class=inside, meter_true_peak=-2.71 dBTP, class=inside) |
| PASS | 12:10:32 | Deezer Stereo Reference stereo stress sequence: offline Deezer legacy reference gate reference (Integrated LUFS=-15.07 LUFS, class=inside, sample_peak=-1.30 dBFS, class=inside, meter_true_peak=-1.20 dBTP, class=inside) |
| PASS | 12:10:32 | QC - Deezer Reference (Stereo): Leveler program delivery candidate is inside the Deezer legacy reference Integrated LUFS window |
| PASS | 12:10:32 | QC - Deezer Reference (Stereo): Leveler program delivery candidate is inside the Deezer legacy reference sample-peak ceiling |
| PASS | 12:10:32 | QC - Deezer Reference (Stereo): Leveler program delivery candidate is inside the Deezer legacy reference true-peak ceiling |
| PASS | 12:10:32 | QC - Deezer Reference (Stereo): Meter sample-peak readings match offline sample peaks |
| PASS | 12:10:32 | QC - Deezer Reference (Stereo): repeated Meter true-peak readings are stable |
| PASS | 12:10:32 | QC - Deezer Reference (Stereo): validation candidates preserve 2 channel(s) |
| PASS | 12:10:32 | QC - Deezer Reference (Stereo): validation candidates preserve distinct channel content |
| PASS | 12:10:32 | QC - Deezer Reference (Stereo): Meter Integrated LUFS readings match offline file measurements |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo) / Pop vocal soft - Chill Winston: Optimizer export exists |
| PASS | 12:10:35 | deezer-stereo-optimizer-apply-lie2me_pop_vocal_soft: exported sample rate is 44100 Hz |
| PASS | 12:10:35 | deezer-stereo-optimizer-apply-lie2me_pop_vocal_soft: exported output preserves 2 channel(s) |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo) / Dynamic piano neutral - Marko Maksimovic: Optimizer export exists |
| PASS | 12:10:35 | deezer-stereo-optimizer-apply-lullaby_piano_neutral: exported sample rate is 44100 Hz |
| PASS | 12:10:35 | deezer-stereo-optimizer-apply-lullaby_piano_neutral: exported output preserves 2 channel(s) |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo) / Instrumental groove hot - Nova Notion: Optimizer export exists |
| PASS | 12:10:35 | deezer-stereo-optimizer-apply-you_make_me_feel_instrumental_hot: exported sample rate is 44100 Hz |
| PASS | 12:10:35 | deezer-stereo-optimizer-apply-you_make_me_feel_instrumental_hot: exported output preserves 2 channel(s) |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo) / Deezer Stereo Reference stereo stress sequence: Optimizer export exists |
| PASS | 12:10:35 | deezer-stereo-optimizer-apply-program: exported sample rate is 44100 Hz |
| PASS | 12:10:35 | deezer-stereo-optimizer-apply-program: exported output preserves 2 channel(s) |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo): rendered delivery candidates are inside the Deezer legacy reference Integrated LUFS window |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo): rendered candidates are inside the Deezer legacy reference sample-peak ceiling |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo): rendered candidates are inside the Deezer legacy reference true-peak ceiling |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo): rendered candidates produced finite active-speech dynamics diagnostics |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo): rendered candidates preserve 2 channel(s) |
| PASS | 12:10:35 | Mastering - Deezer Reference (Stereo): rendered candidates preserve distinct channel content |
| PASS | 12:10:36 | deezer-stereo-limiter-learn-program: rendered sample rate is 44100 Hz |
| PASS | 12:10:36 | deezer-stereo-limiter-learn-program: rendered output preserves 2 channel(s) |
| PASS | 12:10:38 | deezer-stereo-limiter-apply-lie2me_pop_vocal_soft: rendered sample rate is 44100 Hz |
| PASS | 12:10:38 | deezer-stereo-limiter-apply-lie2me_pop_vocal_soft: rendered output preserves 2 channel(s) |
| PASS | 12:10:38 | deezer-stereo-limiter-apply-lullaby_piano_neutral: rendered sample rate is 44100 Hz |
| PASS | 12:10:38 | deezer-stereo-limiter-apply-lullaby_piano_neutral: rendered output preserves 2 channel(s) |
| PASS | 12:10:38 | deezer-stereo-limiter-apply-you_make_me_feel_instrumental_hot: rendered sample rate is 44100 Hz |
| PASS | 12:10:38 | deezer-stereo-limiter-apply-you_make_me_feel_instrumental_hot: rendered output preserves 2 channel(s) |
| PASS | 12:10:38 | deezer-stereo-limiter-apply-program: rendered sample rate is 44100 Hz |
| PASS | 12:10:38 | deezer-stereo-limiter-apply-program: rendered output preserves 2 channel(s) |
| PASS | 12:10:38 | Mastering - Deezer Reference Ceiling (Stereo): rendered candidates do not exceed the Deezer legacy reference Integrated LUFS ceiling |
| PASS | 12:10:38 | Mastering - Deezer Reference Ceiling (Stereo): rendered candidates are inside the Deezer legacy reference sample-peak ceiling |
| PASS | 12:10:38 | Mastering - Deezer Reference Ceiling (Stereo): rendered candidates are inside the Deezer legacy reference true-peak ceiling |
| PASS | 12:10:38 | Mastering - Deezer Reference Ceiling (Stereo): locked compensation places the complete program inside the Deezer legacy reference target range within scenario tolerance (actual=-15.08 LUFS, range=-16.00..-14.00 LUFS, lower tolerance=1.00 dB) |
| PASS | 12:10:38 | Mastering - Deezer Reference Ceiling (Stereo): rendered candidates produced finite active-speech dynamics diagnostics |
| PASS | 12:10:38 | Mastering - Deezer Reference Ceiling (Stereo): rendered candidates preserve 2 channel(s) |
| PASS | 12:10:38 | Mastering - Deezer Reference Ceiling (Stereo): rendered candidates preserve distinct channel content |
| PASS | 12:10:39 | deezer-stereo-compressor-learn-program: rendered sample rate is 44100 Hz |
| PASS | 12:10:39 | deezer-stereo-compressor-learn-program: rendered output preserves 2 channel(s) |
| PASS | 12:10:41 | deezer-stereo-compressor-apply-lie2me_pop_vocal_soft: rendered sample rate is 44100 Hz |
| PASS | 12:10:41 | deezer-stereo-compressor-apply-lie2me_pop_vocal_soft: rendered output preserves 2 channel(s) |
| PASS | 12:10:41 | deezer-stereo-compressor-apply-lullaby_piano_neutral: rendered sample rate is 44100 Hz |
| PASS | 12:10:41 | deezer-stereo-compressor-apply-lullaby_piano_neutral: rendered output preserves 2 channel(s) |
| PASS | 12:10:41 | deezer-stereo-compressor-apply-you_make_me_feel_instrumental_hot: rendered sample rate is 44100 Hz |
| PASS | 12:10:41 | deezer-stereo-compressor-apply-you_make_me_feel_instrumental_hot: rendered output preserves 2 channel(s) |
| PASS | 12:10:41 | deezer-stereo-compressor-apply-program: rendered sample rate is 44100 Hz |
| PASS | 12:10:41 | deezer-stereo-compressor-apply-program: rendered output preserves 2 channel(s) |
| PASS | 12:10:42 | Mastering - Deezer Reference (Stereo): rendered delivery candidates are inside the Deezer legacy reference Integrated LUFS window |
| PASS | 12:10:42 | Mastering - Deezer Reference (Stereo): rendered candidates are inside the Deezer legacy reference sample-peak ceiling |
| PASS | 12:10:42 | Mastering - Deezer Reference (Stereo): rendered candidates are inside the Deezer legacy reference true-peak ceiling |
| PASS | 12:10:42 | Mastering - Deezer Reference (Stereo): rendered candidates produced finite active-speech dynamics diagnostics |
| PASS | 12:10:42 | Mastering - Deezer Reference (Stereo): rendered candidates preserve 2 channel(s) |
| PASS | 12:10:42 | Mastering - Deezer Reference (Stereo): rendered candidates preserve distinct channel content |