{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9792919","patent":{"patent_number":"US-9792919","title":"Efficient and scalable parametric stereo coding for low bitrate applications","assignee":null,"inventors":[],"filing_date":"2017-03-14T00:00:00.000Z","publication_date":"2017-10-17T00:00:00.000Z","cpc_codes":["G10L","G10L","G10L","G10L"],"num_claims":4,"abstract":"The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Efficient and scalable parametric stereo coding for low bitrate applications","description":"The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extracti","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9792919","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-9792919","citation_suggestion":"Patentable. \"Efficient and scalable parametric stereo coding for low bitrate applications\" (US-9792919). https://patentable.app/patents/US-9792919","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9792919","json":"https://patentable.app/api/llm-context/US-9792919","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T13:42:37.427Z"}