{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9634647","patent":{"patent_number":"US-9634647","title":"Complex-valued synthesis filter bank with phase shift","assignee":null,"inventors":[],"filing_date":"2016-11-30T00:00:00.000Z","publication_date":"2017-04-25T00:00:00.000Z","cpc_codes":["G10L","G06F","G06F","G10L","G10L","G10L","G10L","G10L","H04R","H04S"],"num_claims":18,"abstract":"An apparatus for generating real-valued output audio samples is disclosed. The apparatus includes a memory that stores complex-valued input subband samples, real-valued demodulated samples, and the real-valued output audio samples. The apparatus also incudes a phase shifter that shifts a phase of the complex-valued input subband samples by an amount equal to a previously added phase shift and a complex-valued synthesis filter bank that generates the real-valued output audio samples in response to the complex-valued input subband samples, the real-valued demodulated samples, and prototype filter coefficients."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Complex-valued synthesis filter bank with phase shift","description":"An apparatus for generating real-valued output audio samples is disclosed. The apparatus includes a memory that stores complex-valued input subband samples, real-valued demodulated samples, and the re","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9634647","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-9634647","citation_suggestion":"Patentable. \"Complex-valued synthesis filter bank with phase shift\" (US-9634647). https://patentable.app/patents/US-9634647","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9634647","json":"https://patentable.app/api/llm-context/US-9634647","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:19:04.731Z"}