{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9830900","patent":{"patent_number":"US-9830900","title":"Adaptive equalizer, acoustic echo canceller device, and active noise control device","assignee":null,"inventors":[],"filing_date":"2012-03-29T00:00:00.000Z","publication_date":"2017-11-28T00:00:00.000Z","cpc_codes":["H04B","H04R"],"num_claims":20,"abstract":"A variable update step size is determined in proportion to a magnitude ratio or magnitude difference between a first residual signal and a second residual signal. The first residual signal is obtained by using adaptive filter coefficient sequence, where the adaptive filter coefficient sequence has been obtained in previous operations of the adaptive equalizer. The second residual signal is obtained by using a prior update adaptive filter coefficient sequence, where the prior update adaptive filter coefficient sequence is obtained by performing a coefficient update with an arbitrary prior update step size on the adaptive filter coefficient sequence having been obtained in previous operations of the adaptive equalizer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Adaptive equalizer, acoustic echo canceller device, and active noise control device","description":"A variable update step size is determined in proportion to a magnitude ratio or magnitude difference between a first residual signal and a second residual signal. The first residual signal is obtained","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9830900","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-9830900","citation_suggestion":"Patentable. \"Adaptive equalizer, acoustic echo canceller device, and active noise control device\" (US-9830900). https://patentable.app/patents/US-9830900","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9830900","json":"https://patentable.app/api/llm-context/US-9830900","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T14:40:14.106Z"}