The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2025
Filed:
Oct. 15, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Tomohiro Nakatani, Tokyo, JP;
Rintaro Ikeshita, Tokyo, JP;
Keisuke Kinoshita, Tokyo, JP;
Hiroshi Sawada, Tokyo, JP;
Shoko Araki, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
Provided is an acoustic signal enhancement device, including a time-space covariance matrix estimation unit configured to estimate a time-space covariance matrix corresponding to a sound source, using a power of the sound source and an observation signal vector composed of an observation signal from a microphone. A reverberation suppression unit is configured to obtain a reverberation removal filter of the sound source using the time-space covariance matrix, and to generate a reverberation suppression signal vector corresponding to the observation signal for an emphasized sound of the sound source using the reverberation removal filter and the observation signal vector. A sound source separation unit is configured to obtain an emphatic sound of the sound source and the power of the sound source using the reverberation suppression signal vector.