{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8483421","patent":{"patent_number":"US-8483421","title":"Narrow-angle directional microphone","assignee":null,"inventors":[],"filing_date":"2012-08-03T00:00:00.000Z","publication_date":"2013-07-09T00:00:00.000Z","cpc_codes":["H04R"],"num_claims":4,"abstract":"A narrow-angle directional microphone having an acoustic tube, accommodated in a cylindrical microphone case, in a circumferential wall of which an opening is formed to be covered with an acoustic resistor and to a rear end of which a microphone unit is attached, prevents abnormal noise from occurring. The narrow-angle directional microphone includes a first acoustic resisting material provided on an outer circumferential surface of the acoustic tube and covering the opening; and a second acoustic resisting material provided between the first acoustic resisting material and an inner circumferential surface of the microphone case, having a predetermined elastic force in a thickness direction. The second acoustic resisting material covers the first acoustic resisting material, and is fixed to the acoustic tube; and presses the outer circumferential surface of the acoustic tube and the inner circumferential surface of the microphone case by the elastic force."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Narrow-angle directional microphone","description":"A narrow-angle directional microphone having an acoustic tube, accommodated in a cylindrical microphone case, in a circumferential wall of which an opening is formed to be covered with an acoustic res","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8483421","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-8483421","citation_suggestion":"Patentable. \"Narrow-angle directional microphone\" (US-8483421). https://patentable.app/patents/US-8483421","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8483421","json":"https://patentable.app/api/llm-context/US-8483421","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T21:25:01.564Z"}