{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9794694","patent":{"patent_number":"US-9794694","title":"Parametric in-ear impedance matching device","assignee":null,"inventors":[],"filing_date":"2015-04-23T00:00:00.000Z","publication_date":"2017-10-17T00:00:00.000Z","cpc_codes":["H04R","H04R","H04R","H04R","H04R"],"num_claims":15,"abstract":"An ultrasonic audio transducer system includes an ultrasonic speaker. The ultrasonic speaker may be an electrostatic emitter, a piezoelectric emitter (single crystal or stack), a piezoelectric film emitter, or any other emitter capable of emitting ultrasound. The ultrasonic speaker is configured to be coupled (via a wired or wireless connection) to an audio modulated ultrasonic carrier signal from an amplifier, wherein upon application of the audio modulated ultrasonic carrier signal, the ultrasonic speaker is configured to launch a pressure-wave representation of the audio modulated ultrasonic carrier signal into the air. Additionally, the ultrasonic speaker may be implemented with an impedance matching element or optimized for matching the response within a user's ear canal, and the ultrasonic audio transducer system may include The ultrasonic audio headphone system can further include a frequency mismatched microphone to avoid feedback when the microphone and the ultrasonic speaker are, e.g., proximately located."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Parametric in-ear impedance matching device","description":"An ultrasonic audio transducer system includes an ultrasonic speaker. The ultrasonic speaker may be an electrostatic emitter, a piezoelectric emitter (single crystal or stack), a piezoelectric film em","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9794694","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-9794694","citation_suggestion":"Patentable. \"Parametric in-ear impedance matching device\" (US-9794694). https://patentable.app/patents/US-9794694","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9794694","json":"https://patentable.app/api/llm-context/US-9794694","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:20:33.059Z"}