{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9689960","patent":{"patent_number":"US-9689960","title":"Beam rejection in multi-beam microphone systems","assignee":null,"inventors":[],"filing_date":"2013-04-04T00:00:00.000Z","publication_date":"2017-06-27T00:00:00.000Z","cpc_codes":["G01S","G01S","G01S","G01S","H04R","H04R","H04R","H04R","H04R","H04R","H04R"],"num_claims":19,"abstract":"The systems, devices, and processes described herein may identify a beam of a voice-controlled device that is directed toward a reflective surface, such as a wall. The beams may be created by a beamformer. An acoustic echo canceller (AEC) may create filter coefficients for a reference sound. The filter coefficients may be analyzed to identify beams that include multiple peaks. The multiple peaks may indicate presence of one or more reflective surfaces. Using the amplitude and the time delay between the peaks, the device may determine that it is close to a reflective surface in a direction of the beam."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Beam rejection in multi-beam microphone systems","description":"The systems, devices, and processes described herein may identify a beam of a voice-controlled device that is directed toward a reflective surface, such as a wall. The beams may be created by a beamfo","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9689960","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-9689960","citation_suggestion":"Patentable. \"Beam rejection in multi-beam microphone systems\" (US-9689960). https://patentable.app/patents/US-9689960","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9689960","json":"https://patentable.app/api/llm-context/US-9689960","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:34:44.711Z"}