{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9805734","patent":{"patent_number":"US-9805734","title":"Signal processing device, signal processing method and signal processing program for noise cancellation","assignee":null,"inventors":[],"filing_date":"2011-09-15T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["G10L","H04B","H04M","G10L","G10L","G10L"],"num_claims":11,"abstract":"From a mixed signal in which a first signal and a second signal are mixed, the second signal is removed at low processing cost and without delay. As a result, an estimated first signal which has low residue of the second signal and low distortion is obtained.An estimated first signal is generated by subtracting a pseudo second signal which is estimated to be mixed in a first mixed signal in which a first signal and a second signal are mixed from the first mixed signal. The pseudo second signal is obtained by a first adaptive filter using a second mixed signal in which the first signal and the second signal are mixed in a different proportion from the first mixed signal. A coefficient update amount of the first adaptive filter is made smaller as compared with a case when the estimated first signal is smaller than the first mixed signal, in case the estimated first signal is larger than the first mixed signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Signal processing device, signal processing method and signal processing program for noise cancellation","description":"From a mixed signal in which a first signal and a second signal are mixed, the second signal is removed at low processing cost and without delay. As a result, an estimated first signal which has low r","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9805734","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-9805734","citation_suggestion":"Patentable. \"Signal processing device, signal processing method and signal processing program for noise cancellation\" (US-9805734). https://patentable.app/patents/US-9805734","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9805734","json":"https://patentable.app/api/llm-context/US-9805734","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T13:55:35.498Z"}