{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9612225","patent":{"patent_number":"US-9612225","title":"Method of using dual-port measurement system to measure acoustic impedance","assignee":null,"inventors":[],"filing_date":"2014-10-23T00:00:00.000Z","publication_date":"2017-04-04T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N","G01N"],"num_claims":6,"abstract":"A method of using a dual-port measurement system to measure acoustic impedance is used to measure an acoustic impedance Z of a tested object. The tested object includes an input end and an output end opposite to the input end. The dual-port measurement system comprises a first impedance tube and a second impedance tube. The first impedance tube includes a first inlet where a plane wave of a sound source is input, and a first outlet connected with the input end. The second impedance tube includes a second inlet connected with the output end, and a second outlet where the plane wave is output. The method uses the dual-port measurement system and a two-boundary method to obtain the acoustic impedances Z, whereby the dual-port measurement system is conveniently applied to various fields, such as the design of earphones, muffler tubes, sound absorption materials, and artificial ears."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method of using dual-port measurement system to measure acoustic impedance","description":"A method of using a dual-port measurement system to measure acoustic impedance is used to measure an acoustic impedance Z of a tested object. The tested object includes an input end and an output end ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9612225","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-9612225","citation_suggestion":"Patentable. \"Method of using dual-port measurement system to measure acoustic impedance\" (US-9612225). https://patentable.app/patents/US-9612225","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9612225","json":"https://patentable.app/api/llm-context/US-9612225","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:37:05.120Z"}