{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9799342","patent":{"patent_number":"US-9799342","title":"Bandwidth extension method, bandwidth extension apparatus, program, integrated circuit, and audio decoding apparatus","assignee":null,"inventors":[],"filing_date":"2015-04-29T00:00:00.000Z","publication_date":"2017-10-24T00:00:00.000Z","cpc_codes":["G10L","G10L","G10L"],"num_claims":5,"abstract":"To provide a bandwidth extension method which allows reduction of computation amount in bandwidth extension and suppression of deterioration of quality in the bandwidth to be extended. In the bandwidth extension method: a low frequency bandwidth signal is transformed into a QMF domain to generate a first low frequency QMF spectrum; pitch-shifted signals are generated by applying different shifting factors on the low frequency bandwidth signal; a high frequency QMF spectrum is generated by time-stretching the pitch-shifted signals in the QMF domain; the high frequency QMF spectrum is modified; and the modified high frequency QMF spectrum is combined with the first low frequency QMF spectrum."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Bandwidth extension method, bandwidth extension apparatus, program, integrated circuit, and audio decoding apparatus","description":"To provide a bandwidth extension method which allows reduction of computation amount in bandwidth extension and suppression of deterioration of quality in the bandwidth to be extended. In the bandwidt","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9799342","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-9799342","citation_suggestion":"Patentable. \"Bandwidth extension method, bandwidth extension apparatus, program, integrated circuit, and audio decoding apparatus\" (US-9799342). https://patentable.app/patents/US-9799342","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9799342","json":"https://patentable.app/api/llm-context/US-9799342","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:36:12.158Z"}