{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9646621","patent":{"patent_number":"US-9646621","title":"Voice detector and a method for suppressing sub-bands in a voice detector","assignee":null,"inventors":[],"filing_date":"2015-03-10T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["G10L","G10L","G10L","G10L","G10L"],"num_claims":16,"abstract":"The present invention relates to a voice detector being responsive to an input signal being divided into sub-signals representing a frequency sub-band, comprising: means to calculate, for each sub-band, an SNR value snr[n] based on a corresponding sub-signal for each sub-band and a background signal for each sub-band. The voice detector further comprises: means to calculate a power SNR value for each sub-band, wherein at least one of said power SNR values is calculated based on a non-linear function, means to form a single value snr_sum based on the calculated power SNR values, and means to compare said single value snr_sum and a given threshold value vad_thr to make a voice activity decision vad_prim presented on an output port. The invention also relates to a voice activity detector, a node and a method for selectively suppressing sub-bands in a voice detector."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Voice detector and a method for suppressing sub-bands in a voice detector","description":"The present invention relates to a voice detector being responsive to an input signal being divided into sub-signals representing a frequency sub-band, comprising: means to calculate, for each sub-ban","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9646621","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-9646621","citation_suggestion":"Patentable. \"Voice detector and a method for suppressing sub-bands in a voice detector\" (US-9646621). https://patentable.app/patents/US-9646621","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9646621","json":"https://patentable.app/api/llm-context/US-9646621","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:39:56.322Z"}