{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9826312","patent":{"patent_number":"US-9826312","title":"Circuit and method for driving a loudspeaker","assignee":null,"inventors":[],"filing_date":"2014-10-30T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["H04R","H04R","H04R"],"num_claims":18,"abstract":"A circuit for driving a loudspeaker is disclosed. The circuit includes: a signal generator connected to the loudspeaker, generating a first signal comprising a first pulse with positive value and a second pulse with negative value; a detection circuit connected to the loudspeaker, detecting a second signal produced by the loudspeaker in response to the first signal; and a processing circuit connected to the signal generator and the detection circuit, calculating the impedance of the loudspeaker according to the second signal; wherein each pulse width of the first and second pulses is between 100 ns and 900 ns."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Circuit and method for driving a loudspeaker","description":"A circuit for driving a loudspeaker is disclosed. The circuit includes: a signal generator connected to the loudspeaker, generating a first signal comprising a first pulse with positive value and a se","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9826312","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-9826312","citation_suggestion":"Patentable. \"Circuit and method for driving a loudspeaker\" (US-9826312). https://patentable.app/patents/US-9826312","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9826312","json":"https://patentable.app/api/llm-context/US-9826312","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:05:55.140Z"}