{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11257512","patent":{"patent_number":"US-11257512","title":"Adaptive spatial VAD and time-frequency mask estimation for highly non-stationary noise sources","assignee":null,"inventors":[],"filing_date":"2020-01-06T00:00:00.000Z","publication_date":"2022-02-22T00:00:00.000Z","cpc_codes":["G10L","G06N","G10L","G10L","G10L","G10L","H04R","H04R","H04R","G10L","G10L","H04R","H04R"],"num_claims":18,"abstract":"Systems and methods include a first voice activity detector operable to detect speech in a frame of a multichannel audio input signal and output a speech determination, a constrained minimum variance adaptive filter operable to receive the multichannel audio input signal and the speech determination and minimize a signal variance at the output of the filter, thereby producing an equalized target speech signal, a mask estimator operable to receive the equalized target speech signal and the speech determination and generate a spectral-temporal mask to discriminate a target speech from noise and interference speech, and a second activity voice detector operable to detect voice in a frame of the speech discriminated signal. An audio input sensor array including a plurality of microphones, each microphone generating a channel of the multichannel audio input signal. A sub-band analysis module operable to decompose each of the channels into a plurality of frequency sub-bands."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Adaptive spatial VAD and time-frequency mask estimation for highly non-stationary noise sources","description":"Systems and methods include a first voice activity detector operable to detect speech in a frame of a multichannel audio input signal and output a speech determination, a constrained minimum variance ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11257512","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-11257512","citation_suggestion":"Patentable. \"Adaptive spatial VAD and time-frequency mask estimation for highly non-stationary noise sources\" (US-11257512). https://patentable.app/patents/US-11257512","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11257512","json":"https://patentable.app/api/llm-context/US-11257512","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T16:26:10.147Z"}