{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9654871","patent":{"patent_number":"US-9654871","title":"Noise cancellation system with lower rate emulation","assignee":null,"inventors":[],"filing_date":"2014-11-24T00:00:00.000Z","publication_date":"2017-05-16T00:00:00.000Z","cpc_codes":["H04R"],"num_claims":13,"abstract":"A noise cancellation system, comprising: an input for a digital signal, the digital signal having a first sample rate; a digital filter, connected to the input to receive the digital signal; a decimator, connected to the input to receive the digital signal and to generate a decimated signal at a second sample rate lower than the first sample rate; and a processor. The processor comprises: an emulation of the digital filter, connected to receive the decimated signal and to generate an emulated filter output; and a control circuit, for generating a control signal on the basis of the emulated filter output. The control signal is applied to the digital filter to control a filter characteristic thereof."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Noise cancellation system with lower rate emulation","description":"A noise cancellation system, comprising: an input for a digital signal, the digital signal having a first sample rate; a digital filter, connected to the input to receive the digital signal; a decimat","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9654871","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-9654871","citation_suggestion":"Patentable. \"Noise cancellation system with lower rate emulation\" (US-9654871). https://patentable.app/patents/US-9654871","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9654871","json":"https://patentable.app/api/llm-context/US-9654871","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:00:36.606Z"}