Basis: Official playback guidance.
SoundCloud recommends -14 LUFS Integrated and below -1 dBTP; this is playback guidance, not an upload acceptance band. These checks validate the APU product recipes on deterministic stereo material; they do not certify platform or broadcaster acceptance.
Sources: SoundCloud loudness normalization
| Project | Status | Result |
|---|---|---|
| Leveler | PASS | Validates complete-program SoundCloud 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 SoundCloud Stereo Reference delivery candidates from source fixtures. |
| Limiter | PASS | Renders SoundCloud Stereo Reference candidates through the loudness and true-peak limiters. |
| Compressor | PASS | Checks complete-program SoundCloud Stereo Reference delivery after source-to-target compression; isolated renders remain diagnostics. |
| Status | Time | Condition / Message |
|---|---|---|
| PASS | 12:09:21 | SoundCloud Stereo Reference / Pop vocal soft - Chill Winston: source fixture preserves 2 channel(s) |
| PASS | 12:09:21 | SoundCloud Stereo Reference / Dynamic piano neutral - Marko Maksimovic: source fixture preserves 2 channel(s) |
| PASS | 12:09:21 | SoundCloud Stereo Reference / Instrumental groove hot - Nova Notion: source fixture preserves 2 channel(s) |
| PASS | 12:09:21 | SoundCloud Stereo Reference / Pop vocal soft - Chill Winston: fixture is stereo |
| PASS | 12:09:21 | SoundCloud Stereo Reference / Pop vocal soft - Chill Winston: fixture contains distinct left and right channels |
| PASS | 12:09:21 | SoundCloud Stereo Reference / Dynamic piano neutral - Marko Maksimovic: fixture is stereo |
| PASS | 12:09:21 | SoundCloud Stereo Reference / Dynamic piano neutral - Marko Maksimovic: fixture contains distinct left and right channels |
| PASS | 12:09:21 | SoundCloud Stereo Reference / Instrumental groove hot - Nova Notion: fixture is stereo |
| PASS | 12:09:21 | SoundCloud Stereo Reference / Instrumental groove hot - Nova Notion: fixture contains distinct left and right channels |
| PASS | 12:09:21 | SoundCloud Stereo Reference / SoundCloud Stereo Reference stereo stress sequence: fixture is stereo |
| PASS | 12:09:21 | SoundCloud Stereo Reference / SoundCloud Stereo Reference stereo stress sequence: fixture contains distinct left and right channels |
| PASS | 12:09:22 | soundcloud-stereo-leveler-learn-program: rendered sample rate is 44100 Hz |
| PASS | 12:09:22 | soundcloud-stereo-leveler-learn-program: rendered output preserves 2 channel(s) |
| PASS | 12:09:24 | soundcloud-stereo-leveler-apply-lie2me_pop_vocal_soft: rendered sample rate is 44100 Hz |
| PASS | 12:09:24 | soundcloud-stereo-leveler-apply-lie2me_pop_vocal_soft: rendered output preserves 2 channel(s) |
| PASS | 12:09:24 | soundcloud-stereo-leveler-apply-lullaby_piano_neutral: rendered sample rate is 44100 Hz |
| PASS | 12:09:24 | soundcloud-stereo-leveler-apply-lullaby_piano_neutral: rendered output preserves 2 channel(s) |
| PASS | 12:09:24 | soundcloud-stereo-leveler-apply-you_make_me_feel_instrumental_hot: rendered sample rate is 44100 Hz |
| PASS | 12:09:24 | soundcloud-stereo-leveler-apply-you_make_me_feel_instrumental_hot: rendered output preserves 2 channel(s) |
| PASS | 12:09:24 | soundcloud-stereo-leveler-apply-program: rendered sample rate is 44100 Hz |
| PASS | 12:09:24 | soundcloud-stereo-leveler-apply-program: rendered output preserves 2 channel(s) |
| PASS | 12:09:25 | Mastering - SoundCloud Reference (Stereo): rendered delivery candidates are inside the SoundCloud playback Integrated LUFS window |
| PASS | 12:09:25 | Mastering - SoundCloud Reference (Stereo): rendered candidates are inside the SoundCloud playback sample-peak ceiling |
| PASS | 12:09:25 | Mastering - SoundCloud Reference (Stereo): rendered candidates are inside the SoundCloud playback true-peak ceiling |
| PASS | 12:09:25 | Mastering - SoundCloud Reference (Stereo): rendered candidates produced finite active-speech dynamics diagnostics |
| PASS | 12:09:25 | Mastering - SoundCloud Reference (Stereo): rendered candidates preserve 2 channel(s) |
| PASS | 12:09:25 | Mastering - SoundCloud Reference (Stereo): rendered candidates preserve distinct channel content |
| PASS | 12:09:25 | Mastering - SoundCloud Reference (Stereo): Learn and lock workflow (learn_output=-14.12 LUFS, locked_delta=+0.12 dB) |
| PASS | 12:09:26 | Integrated LUFS validation view / Pop vocal soft - Chill Winston: Meter produced finite source measurements |
| PASS | 12:09:26 | Integrated LUFS validation view / Pop vocal soft - Chill Winston: Meter produced finite output measurements |
| PASS | 12:09:26 | Integrated LUFS validation view / Dynamic piano neutral - Marko Maksimovic: Meter produced finite source measurements |
| PASS | 12:09:26 | Integrated LUFS validation view / Dynamic piano neutral - Marko Maksimovic: Meter produced finite output measurements |
| PASS | 12:09:26 | Integrated LUFS validation view / Instrumental groove hot - Nova Notion: Meter produced finite source measurements |
| PASS | 12:09:26 | Integrated LUFS validation view / Instrumental groove hot - Nova Notion: Meter produced finite output measurements |
| PASS | 12:09:26 | Integrated LUFS validation view / SoundCloud Stereo Reference stereo stress sequence: Meter produced finite source measurements |
| PASS | 12:09:26 | Integrated LUFS validation view / SoundCloud Stereo Reference stereo stress sequence: Meter produced finite output measurements |
| PASS | 12:09:26 | Sample peak check / Pop vocal soft - Chill Winston: Meter produced finite source measurements |
| PASS | 12:09:26 | Sample peak check / Pop vocal soft - Chill Winston: Meter produced finite output measurements |
| PASS | 12:09:26 | Sample peak check / Dynamic piano neutral - Marko Maksimovic: Meter produced finite source measurements |
| PASS | 12:09:26 | Sample peak check / Dynamic piano neutral - Marko Maksimovic: Meter produced finite output measurements |
| PASS | 12:09:26 | Sample peak check / Instrumental groove hot - Nova Notion: Meter produced finite source measurements |
| PASS | 12:09:26 | Sample peak check / Instrumental groove hot - Nova Notion: Meter produced finite output measurements |
| PASS | 12:09:26 | Sample peak check / SoundCloud Stereo Reference stereo stress sequence: Meter produced finite source measurements |
| PASS | 12:09:26 | Sample peak check / SoundCloud Stereo Reference stereo stress sequence: Meter produced finite output measurements |
| PASS | 12:09:26 | True peak check / Pop vocal soft - Chill Winston: Meter produced finite source measurements |
| PASS | 12:09:26 | True peak check / Pop vocal soft - Chill Winston: Meter produced finite output measurements |
| PASS | 12:09:26 | True peak check / Dynamic piano neutral - Marko Maksimovic: Meter produced finite source measurements |
| PASS | 12:09:26 | True peak check / Dynamic piano neutral - Marko Maksimovic: Meter produced finite output measurements |
| PASS | 12:09:26 | True peak check / Instrumental groove hot - Nova Notion: Meter produced finite source measurements |
| PASS | 12:09:26 | True peak check / Instrumental groove hot - Nova Notion: Meter produced finite output measurements |
| PASS | 12:09:26 | True peak check / SoundCloud Stereo Reference stereo stress sequence: Meter produced finite source measurements |
| PASS | 12:09:26 | True peak check / SoundCloud Stereo Reference stereo stress sequence: Meter produced finite output measurements |
| PASS | 12:09:26 | Pop vocal soft - Chill Winston: offline SoundCloud playback gate reference (Integrated LUFS=-13.87 LUFS, class=inside, sample_peak=-5.20 dBFS, class=inside, meter_true_peak=-4.80 dBTP, class=inside) |
| PASS | 12:09:26 | Dynamic piano neutral - Marko Maksimovic: offline SoundCloud playback gate reference (Integrated LUFS=-14.93 LUFS, class=inside, sample_peak=-1.01 dBFS, class=inside, meter_true_peak=-1.01 dBTP, class=inside) |
| PASS | 12:09:26 | Instrumental groove hot - Nova Notion: offline SoundCloud playback gate reference (Integrated LUFS=-13.66 LUFS, class=inside, sample_peak=-1.94 dBFS, class=inside, meter_true_peak=-1.69 dBTP, class=inside) |
| PASS | 12:09:26 | SoundCloud Stereo Reference stereo stress sequence: offline SoundCloud playback gate reference (Integrated LUFS=-14.07 LUFS, class=inside, sample_peak=-1.01 dBFS, class=inside, meter_true_peak=-1.01 dBTP, class=inside) |
| PASS | 12:09:26 | QC - SoundCloud Reference (Stereo): Leveler program delivery candidate is inside the SoundCloud playback Integrated LUFS window |
| PASS | 12:09:26 | QC - SoundCloud Reference (Stereo): Leveler program delivery candidate is inside the SoundCloud playback sample-peak ceiling |
| PASS | 12:09:26 | QC - SoundCloud Reference (Stereo): Leveler program delivery candidate is inside the SoundCloud playback true-peak ceiling |
| PASS | 12:09:26 | QC - SoundCloud Reference (Stereo): Meter sample-peak readings match offline sample peaks |
| PASS | 12:09:26 | QC - SoundCloud Reference (Stereo): repeated Meter true-peak readings are stable |
| PASS | 12:09:26 | QC - SoundCloud Reference (Stereo): validation candidates preserve 2 channel(s) |
| PASS | 12:09:26 | QC - SoundCloud Reference (Stereo): validation candidates preserve distinct channel content |
| PASS | 12:09:26 | QC - SoundCloud Reference (Stereo): Meter Integrated LUFS readings match offline file measurements |
| PASS | 12:09:29 | Mastering - SoundCloud Reference (Stereo) / Pop vocal soft - Chill Winston: Optimizer export exists |
| PASS | 12:09:29 | soundcloud-stereo-optimizer-apply-lie2me_pop_vocal_soft: exported sample rate is 44100 Hz |
| PASS | 12:09:29 | soundcloud-stereo-optimizer-apply-lie2me_pop_vocal_soft: exported output preserves 2 channel(s) |
| PASS | 12:09:30 | Mastering - SoundCloud Reference (Stereo) / Dynamic piano neutral - Marko Maksimovic: Optimizer export exists |
| PASS | 12:09:30 | soundcloud-stereo-optimizer-apply-lullaby_piano_neutral: exported sample rate is 44100 Hz |
| PASS | 12:09:30 | soundcloud-stereo-optimizer-apply-lullaby_piano_neutral: exported output preserves 2 channel(s) |
| PASS | 12:09:30 | Mastering - SoundCloud Reference (Stereo) / Instrumental groove hot - Nova Notion: Optimizer export exists |
| PASS | 12:09:30 | soundcloud-stereo-optimizer-apply-you_make_me_feel_instrumental_hot: exported sample rate is 44100 Hz |
| PASS | 12:09:30 | soundcloud-stereo-optimizer-apply-you_make_me_feel_instrumental_hot: exported output preserves 2 channel(s) |
| PASS | 12:09:30 | Mastering - SoundCloud Reference (Stereo) / SoundCloud Stereo Reference stereo stress sequence: Optimizer export exists |
| PASS | 12:09:30 | soundcloud-stereo-optimizer-apply-program: exported sample rate is 44100 Hz |
| PASS | 12:09:30 | soundcloud-stereo-optimizer-apply-program: exported output preserves 2 channel(s) |
| PASS | 12:09:30 | Mastering - SoundCloud Reference (Stereo): rendered delivery candidates are inside the SoundCloud playback Integrated LUFS window |
| PASS | 12:09:30 | Mastering - SoundCloud Reference (Stereo): rendered candidates are inside the SoundCloud playback sample-peak ceiling |
| PASS | 12:09:30 | Mastering - SoundCloud Reference (Stereo): rendered candidates are inside the SoundCloud playback true-peak ceiling |
| PASS | 12:09:30 | Mastering - SoundCloud Reference (Stereo): rendered candidates produced finite active-speech dynamics diagnostics |
| PASS | 12:09:30 | Mastering - SoundCloud Reference (Stereo): rendered candidates preserve 2 channel(s) |
| PASS | 12:09:30 | Mastering - SoundCloud Reference (Stereo): rendered candidates preserve distinct channel content |
| PASS | 12:09:31 | soundcloud-stereo-limiter-learn-program: rendered sample rate is 44100 Hz |
| PASS | 12:09:31 | soundcloud-stereo-limiter-learn-program: rendered output preserves 2 channel(s) |
| PASS | 12:09:33 | soundcloud-stereo-limiter-apply-lie2me_pop_vocal_soft: rendered sample rate is 44100 Hz |
| PASS | 12:09:33 | soundcloud-stereo-limiter-apply-lie2me_pop_vocal_soft: rendered output preserves 2 channel(s) |
| PASS | 12:09:33 | soundcloud-stereo-limiter-apply-lullaby_piano_neutral: rendered sample rate is 44100 Hz |
| PASS | 12:09:33 | soundcloud-stereo-limiter-apply-lullaby_piano_neutral: rendered output preserves 2 channel(s) |
| PASS | 12:09:33 | soundcloud-stereo-limiter-apply-you_make_me_feel_instrumental_hot: rendered sample rate is 44100 Hz |
| PASS | 12:09:33 | soundcloud-stereo-limiter-apply-you_make_me_feel_instrumental_hot: rendered output preserves 2 channel(s) |
| PASS | 12:09:33 | soundcloud-stereo-limiter-apply-program: rendered sample rate is 44100 Hz |
| PASS | 12:09:33 | soundcloud-stereo-limiter-apply-program: rendered output preserves 2 channel(s) |
| PASS | 12:09:33 | Mastering - SoundCloud Reference Ceiling (Stereo): rendered candidates do not exceed the SoundCloud playback Integrated LUFS ceiling |
| PASS | 12:09:33 | Mastering - SoundCloud Reference Ceiling (Stereo): rendered candidates are inside the SoundCloud playback sample-peak ceiling |
| PASS | 12:09:33 | Mastering - SoundCloud Reference Ceiling (Stereo): rendered candidates are inside the SoundCloud playback true-peak ceiling |
| PASS | 12:09:33 | Mastering - SoundCloud Reference Ceiling (Stereo): locked compensation places the complete program inside the SoundCloud playback target range within scenario tolerance (actual=-13.97 LUFS, range=-15.00..-13.00 LUFS, lower tolerance=1.00 dB) |
| PASS | 12:09:33 | Mastering - SoundCloud Reference Ceiling (Stereo): rendered candidates produced finite active-speech dynamics diagnostics |
| PASS | 12:09:33 | Mastering - SoundCloud Reference Ceiling (Stereo): rendered candidates preserve 2 channel(s) |
| PASS | 12:09:33 | Mastering - SoundCloud Reference Ceiling (Stereo): rendered candidates preserve distinct channel content |
| PASS | 12:09:34 | soundcloud-stereo-compressor-learn-program: rendered sample rate is 44100 Hz |
| PASS | 12:09:34 | soundcloud-stereo-compressor-learn-program: rendered output preserves 2 channel(s) |
| PASS | 12:09:36 | soundcloud-stereo-compressor-apply-lie2me_pop_vocal_soft: rendered sample rate is 44100 Hz |
| PASS | 12:09:36 | soundcloud-stereo-compressor-apply-lie2me_pop_vocal_soft: rendered output preserves 2 channel(s) |
| PASS | 12:09:36 | soundcloud-stereo-compressor-apply-lullaby_piano_neutral: rendered sample rate is 44100 Hz |
| PASS | 12:09:36 | soundcloud-stereo-compressor-apply-lullaby_piano_neutral: rendered output preserves 2 channel(s) |
| PASS | 12:09:36 | soundcloud-stereo-compressor-apply-you_make_me_feel_instrumental_hot: rendered sample rate is 44100 Hz |
| PASS | 12:09:36 | soundcloud-stereo-compressor-apply-you_make_me_feel_instrumental_hot: rendered output preserves 2 channel(s) |
| PASS | 12:09:36 | soundcloud-stereo-compressor-apply-program: rendered sample rate is 44100 Hz |
| PASS | 12:09:36 | soundcloud-stereo-compressor-apply-program: rendered output preserves 2 channel(s) |
| PASS | 12:09:36 | Mastering - SoundCloud Reference (Stereo): rendered delivery candidates are inside the SoundCloud playback Integrated LUFS window |
| PASS | 12:09:36 | Mastering - SoundCloud Reference (Stereo): rendered candidates are inside the SoundCloud playback sample-peak ceiling |
| PASS | 12:09:36 | Mastering - SoundCloud Reference (Stereo): rendered candidates are inside the SoundCloud playback true-peak ceiling |
| PASS | 12:09:36 | Mastering - SoundCloud Reference (Stereo): rendered candidates produced finite active-speech dynamics diagnostics |
| PASS | 12:09:36 | Mastering - SoundCloud Reference (Stereo): rendered candidates preserve 2 channel(s) |
| PASS | 12:09:36 | Mastering - SoundCloud Reference (Stereo): rendered candidates preserve distinct channel content |