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:
Nov. 25, 2025
Filed:
Feb. 25, 2021
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;
NTT, Inc., Tokyo, JP;
Abstract
An acoustic signal enhancement device includes: a spatiotemporal covariance matrix estimation unitconfigured to estimate spatiotemporal covariance matrices Rand P; a reverberation suppression unitconfigured to obtain a reverberation suppression filter Gof the sound source j using the estimated spatiotemporal covariance matrices Rand Pfor each sound source j and to generate a reverberation suppression signal vector using the obtained reverberation suppression filter Gand the observation signal vector X; a sound source separation unitconfigured to obtain an enhanced sound yof the sound source j and power of the sound source j using the generated reverberation suppression signal vector for each sound source j (where 1≤j≤J) corresponding to the target sound; and a control unitconfigured to perform control such that processes of these units are repeatedly performed.