{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9672804","patent":{"patent_number":"US-9672804","title":"Hearing aid compatible audio device with acoustic noise cancellation","assignee":null,"inventors":[],"filing_date":"2015-07-09T00:00:00.000Z","publication_date":"2017-06-06T00:00:00.000Z","cpc_codes":["H04R","G11C","G11C","G11C","H04M","H04M","H04R","H04R","H04R","H04R","H04R","H04R"],"num_claims":20,"abstract":"A portable audio device, which includes active noise cancellation circuitry, a hearing aid compliant magnetic radiator, and a speaker/earpiece, is surrounded by ambient acoustic noise. The active noise cancellation circuitry provides an anti-noise signal at an input of the speaker to control/reduce the ambient acoustic noise outside of the device. In addition, the active noise cancellation circuitry provides an inverse anti-noise signal to an input of the magnetic radiator. The magnetic fields produced by the speaker driven by the anti-noise signal and the magnetic radiator driven by the inverse anti-noise signal cancel each other out through phase cancellation such that a hearing aid using a telecoil coupled to the audio device does not produce significant audio waves based on either of these signals. Other embodiments are also described."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Hearing aid compatible audio device with acoustic noise cancellation","description":"A portable audio device, which includes active noise cancellation circuitry, a hearing aid compliant magnetic radiator, and a speaker/earpiece, is surrounded by ambient acoustic noise. The active nois","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9672804","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-9672804","citation_suggestion":"Patentable. \"Hearing aid compatible audio device with acoustic noise cancellation\" (US-9672804). https://patentable.app/patents/US-9672804","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9672804","json":"https://patentable.app/api/llm-context/US-9672804","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:17:50.110Z"}