{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9762210","patent":{"patent_number":"US-9762210","title":"Complex exponential modulated filter bank for high frequency reconstruction or parametric stereo","assignee":null,"inventors":[],"filing_date":"2017-05-30T00:00:00.000Z","publication_date":"2017-09-12T00:00:00.000Z","cpc_codes":["G10L","G06F","G06F","G10L","G10L","G10L","G10L","G10L","H04R","H04S"],"num_claims":11,"abstract":"An apparatus and method are disclosed for filtering an audio signal. The apparatus includes an analysis filter bank, a phase shifter, a high frequency reconstructor or parametric stereo processor, and a synthesis filter bank. The analysis filterbank receives real-valued time domain input audio samples and generates complex valued subband samples. The phase shifter shifts a phase of the complex-valued subband samples by an amount. The high frequency reconstructor or parametric stereo processor modifies at least some of the complex valued subband samples. A phase shifter then unshifts a phase of the modified complex-valued subband samples by the amount. The synthesis filter bank receives the modified complex valued subband samples and generates time domain output audio samples."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Complex exponential modulated filter bank for high frequency reconstruction or parametric stereo","description":"An apparatus and method are disclosed for filtering an audio signal. The apparatus includes an analysis filter bank, a phase shifter, a high frequency reconstructor or parametric stereo processor, and","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9762210","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-9762210","citation_suggestion":"Patentable. \"Complex exponential modulated filter bank for high frequency reconstruction or parametric stereo\" (US-9762210). https://patentable.app/patents/US-9762210","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9762210","json":"https://patentable.app/api/llm-context/US-9762210","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:28:21.515Z"}