{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8542840","patent":{"patent_number":"US-8542840","title":"Apparatus and method for filtering a signal to match a loudspeaker","assignee":null,"inventors":[],"filing_date":"2010-11-24T00:00:00.000Z","publication_date":"2013-09-24T00:00:00.000Z","cpc_codes":["H04R"],"num_claims":16,"abstract":"A signal-processing circuit for the generation of a loudspeaker signal may include an input for the feeding of a digital input signal and a digital equalizer filter that is coupled with the input and has at least one first recursive filter that is defined by a first adjustable set of coefficients, an amplification device, a current measurement device, a digital filter block that may be configured to generate, through filtering, an estimate signal as a function of the measurement signal, and a matching block that may be configured to determine a new set of coefficients as a function of the measurement signal, the estimate signal, and the filtered input signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and method for filtering a signal to match a loudspeaker","description":"A signal-processing circuit for the generation of a loudspeaker signal may include an input for the feeding of a digital input signal and a digital equalizer filter that is coupled with the input and ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8542840","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-8542840","citation_suggestion":"Patentable. \"Apparatus and method for filtering a signal to match a loudspeaker\" (US-8542840). https://patentable.app/patents/US-8542840","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8542840","json":"https://patentable.app/api/llm-context/US-8542840","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:59:55.694Z"}