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Loudness obligations live in delivery requirements outside the file spec (producer).\n\nLimitations: Spec text views only.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://github.com/AMWA-TV/AS-11_UK_DPP_HD/blob/12e100a3de2f60592413a0d21f81f343505e0123/specification_text_views/AMWA_AS_11_UK_DPP_HD.simple.txt","note":"AS-11 UK DPP HD simple text at 12e100a3 lines 158-176, 336-352; search loud/R 128; AS-11 X9 simple text at 41c8de40 lines 273-291"},{"url":"https://github.com/AMWA-TV/AS-11_UK_DPP_HD/blob/12e100a3de2f60592413a0d21f81f343505e0123/LICENSE.txt","note":"AS-11 UK DPP HD simple text at 12e100a3 lines 158-176, 336-352; search loud/R 128; AS-11 X9 simple text at 41c8de40 lines 273-291"},{"url":"https://github.com/AMWA-TV/AS-11_X9/blob/41c8de40bf016bb4a7f9490932542f0310996a78/specification_text_views/AMWA_AS_11_X9.simple.txt","note":"AS-11 UK DPP HD simple text at 12e100a3 lines 158-176, 336-352; search loud/R 128; AS-11 X9 simple text at 41c8de40 lines 273-291"},{"url":"https://www.aafassociation.org/downloads/specifications/Technical_Overview_of_AS-11_Specifications.pdf","note":"AS-11 UK DPP HD simple text at 12e100a3 lines 158-176, 336-352; search loud/R 128; AS-11 X9 simple text at 41c8de40 lines 273-291"},{"url":"https://www.dfi.dk/files/docs/2018-01/PRESTO4U_DPP_UK_BroadcastFileDelivery_2014_09_23_0.pdf","note":"AS-11 UK DPP HD simple text at 12e100a3 lines 158-176, 336-352; search loud/R 128; AS-11 X9 simple text at 41c8de40 lines 273-291"}]},"tags":[],"type":"article","links":[],"title":"What does the public AS-11 UK DPP HD specification require for audio channels and track layout, and where does loudness appear?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"AMWA AS-11 UK DPP HD requires one mono channel per track, 24-bit/48 kHz PCM and exactly 4 or 16 channels, and its text contains no loudness requirement; AS-11 X9 instead describes audio layout through MCA labelling (Audio Layout Mode 0).","evidence":{"claims":[{"url":"https://github.com/AMWA-TV/AS-11_UK_DPP_HD/blob/12e100a3de2f60592413a0d21f81f343505e0123/specification_text_views/AMWA_AS_11_UK_DPP_HD.simple.txt","claim":"AMWA AS-11 UK DPP HD requires one mono channel per track, 24-bit/48 kHz PCM and exactly 4 or 16 channels, and its text contains no loudness requirement; AS-11 X9 instead describes audio layout through MCA labelling (Audio Layout Mode 0).","locator":"AS-11 UK DPP HD simple text at 12e100a3 lines 158-176, 336-352; search loud/R 128; AS-11 X9 simple text at 41c8de40 lines 273-291","classification":"sourced_fact"}],"review":"unreviewed","execution":"not_run","inspection":"source_inspected","execution_record_ids":[]},"language":"en","categories":["T10","T13"],"extensions":{"curation/v1":{"curator":"CURATOR-A-20261021","revision":1,"topic_ids":["CAT:T10.03"],"confidence":"Low.","limitations":["Spec text views only.","Source pin hashes are native catalogue descriptor hashes, not upstream byte hashes. 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