{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9628933","patent":{"patent_number":"US-9628933","title":"Method for rendering multi-channel audio signals for L1 channels to a different number L2 of loudspeaker channels and apparatus for rendering multi-channel audio signals for L1 channels to a different number L2 of loudspeaker channels","assignee":null,"inventors":[],"filing_date":"2014-07-18T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H04S","H04S","H04S","H04S","H04S"],"num_claims":13,"abstract":"Multi-channel audio content is mixed for a particular loudspeaker setup. However, a consumer's audio setup is very likely to use a different placement of speakers. The present invention provides a method of rendering multi-channel audio that assures replay of the spatial signal components with equal loudness of the signal. A method for obtaining an energy preserving mixing matrix (G) for mixing L1 input audio channels to L2 output channels comprises steps of obtaining (s711) a first mixing matrix G, performing (s712) a singular value decomposition on the first mixing matrix Ĝ to obtain a singularity matrix S, processing (s713) the singularity matrix S to obtain a processed singularity matrix Ŝ, determining (s715) a scaling factor a, and calculating (s716) an improved mixing matrix G according to G=a U Ŝ VT. The perceived sound, loudness, timbre and spatial impression of multi-channel audio replayed on an arbitrary loudspeaker setup practically equals that of the original speaker setup."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method for rendering multi-channel audio signals for L1 channels to a different number L2 of loudspeaker channels and apparatus for rendering multi-channel audio signals for L1 channels to a different number L2 of loudspeaker channels","description":"Multi-channel audio content is mixed for a particular loudspeaker setup. However, a consumer's audio setup is very likely to use a different placement of speakers. The present invention provides a met","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9628933","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-9628933","citation_suggestion":"Patentable. \"Method for rendering multi-channel audio signals for L1 channels to a different number L2 of loudspeaker channels and apparatus for rendering multi-channel audio signals for L1 channels to a different number L2 of loudspeaker channels\" (US-9628933). https://patentable.app/patents/US-9628933","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9628933","json":"https://patentable.app/api/llm-context/US-9628933","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:15:21.043Z"}