{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9632982","patent":{"patent_number":"US-9632982","title":"Orthogonal transform apparatus, orthogonal transform method, orthogonal transform computer program, and audio decoding apparatus","assignee":null,"inventors":[],"filing_date":"2014-03-28T00:00:00.000Z","publication_date":"2017-04-25T00:00:00.000Z","cpc_codes":["G06F","G10L","H04N","H04N","H04N"],"num_claims":3,"abstract":"An orthogonal transform apparatus includes: an interchanging unit which interchanges MDCT coefficients contained in a first half of a prescribed interval with MDCT coefficients contained in a second half thereof; an inverting unit which inverts the sign of the MDCT coefficients contained in the second half of the prescribed interval after the interchange; an inverse cosine transform unit which computes the real components of QMF coefficients by applying an IMDCT using FFT to the MDCT coefficients contained in the first half and the sign-inverted MDCT coefficients contained in the second half; an inverse sine transform unit which computes the imaginary components of the QMF coefficients by applying an IMDST using FFT to the MDCT coefficients contained in the first half and the sign-inverted MDCT coefficients contained in the second half; and a coefficient adjusting unit which computes the QMF coefficients by combining the real components with the imaginary components."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Orthogonal transform apparatus, orthogonal transform method, orthogonal transform computer program, and audio decoding apparatus","description":"An orthogonal transform apparatus includes: an interchanging unit which interchanges MDCT coefficients contained in a first half of a prescribed interval with MDCT coefficients contained in a second h","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9632982","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-9632982","citation_suggestion":"Patentable. \"Orthogonal transform apparatus, orthogonal transform method, orthogonal transform computer program, and audio decoding apparatus\" (US-9632982). https://patentable.app/patents/US-9632982","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9632982","json":"https://patentable.app/api/llm-context/US-9632982","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:00:45.113Z"}