{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8467538","patent":{"patent_number":"US-8467538","title":"Dereverberation apparatus, dereverberation method, dereverberation program, and recording medium","assignee":null,"inventors":[],"filing_date":"2009-02-27T00:00:00.000Z","publication_date":"2013-06-18T00:00:00.000Z","cpc_codes":["H04S","G10L","G10L","G10L","G10L"],"num_claims":7,"abstract":"A sound source model storage section stores a sound source model that represents an audio signal emitted from a sound source in the form of a probability density function. An observation signal, which is obtained by collecting the audio signal, is converted into a plurality of frequency-specific observation signals each corresponding to one of a plurality of frequency bands. Then, a dereverberation filter corresponding to each frequency band is estimated by using the frequency-specific observation signal for the frequency band on the basis of the sound source model and a reverberation model that represents a relationship for each frequency band among the audio signal, the observation signal and the dereverberation filter. A frequency-specific target signal corresponding to each frequency band is determined by applying the dereverberation filter for the frequency band to the frequency-specific observation signal for the frequency band, and the resulting frequency-specific target signals are integrated."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Dereverberation apparatus, dereverberation method, dereverberation program, and recording medium","description":"A sound source model storage section stores a sound source model that represents an audio signal emitted from a sound source in the form of a probability density function. An observation signal, which","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8467538","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-8467538","citation_suggestion":"Patentable. \"Dereverberation apparatus, dereverberation method, dereverberation program, and recording medium\" (US-8467538). https://patentable.app/patents/US-8467538","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8467538","json":"https://patentable.app/api/llm-context/US-8467538","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T13:24:46.308Z"}