{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9704494","patent":{"patent_number":"US-9704494","title":"Down-mixing compensation for audio watermarking","assignee":null,"inventors":[],"filing_date":"2016-09-30T00:00:00.000Z","publication_date":"2017-07-11T00:00:00.000Z","cpc_codes":["G10L","G10L"],"num_claims":20,"abstract":"Example methods, apparatus, systems and articles of manufacture to implement down-mixing compensation for audio watermarking are disclosed. Example watermark embedding methods disclosed herein include determining a first attenuation factor associated with a first audio channel of a multi-channel audio signal based on first down-mixed audio samples obtained from down-mixing the first audio channel and a second audio channel of the multi-channel audio signal, determining a second attenuation factor associated with a third audio channel of the multi-channel audio signal based on second down-mixed audio samples obtained from down-mixing the second audio channel and the third audio channel of the multi-channel audio signal, selecting one of the first attenuation factor or the second attenuation factor to be a third attenuation factor associated with the second audio channel of the multi-channel audio signal, and embedding a watermark in the second audio channel based on the third attenuation factor."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Down-mixing compensation for audio watermarking","description":"Example methods, apparatus, systems and articles of manufacture to implement down-mixing compensation for audio watermarking are disclosed. Example watermark embedding methods disclosed herein include","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9704494","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9704494","citation_suggestion":"Patentable. \"Down-mixing compensation for audio watermarking\" (US-9704494). https://patentable.app/patents/US-9704494","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9704494","json":"https://patentable.app/api/llm-context/US-9704494","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:19:42.465Z"}