{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9602922","patent":{"patent_number":"US-9602922","title":"Adaptive echo cancellation","assignee":null,"inventors":[],"filing_date":"2013-06-27T00:00:00.000Z","publication_date":"2017-03-21T00:00:00.000Z","cpc_codes":["H04R","H04B","H04M","H04M","H04R","H04M","H04R","H04R"],"num_claims":20,"abstract":"An audio-based system may perform echo cancellation using first and second adaptive filters. An adaptation controller may be configured to control whether and/or how the filter coefficients of the first adaptive filter are updated, based on detected filter divergence, echo path changes, and/or presence of near-end user voice. The parameters of the second adaptive filter may be copied from the first adaptive filter under certain conditions that indicate whether copying the parameters would be likely to improve echo suppression."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Adaptive echo cancellation","description":"An audio-based system may perform echo cancellation using first and second adaptive filters. An adaptation controller may be configured to control whether and/or how the filter coefficients of the fir","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9602922","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-9602922","citation_suggestion":"Patentable. \"Adaptive echo cancellation\" (US-9602922). https://patentable.app/patents/US-9602922","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9602922","json":"https://patentable.app/api/llm-context/US-9602922","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:59:42.404Z"}