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:
Apr. 30, 2024
Filed:
Jul. 30, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Yuma Koizumi, Tokyo, JP;
Shoichiro Saito, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
By appropriately registering a sound with an arbitrary length to be registered, erroneous determination is suppressed. A normal sound registration apparatusextracts a feature amount with a fixed-length from a time-series acoustic signal with a variable arbitrary length. A frequency conversion unitacquires a time-series frequency signal obtained by frequency-converting the time-series acoustic signal. A feature extraction unitextracts a feature amount from the time-series acoustic signal. The feature extraction unitis optimized to extract, from the time-series acoustic signal including at least a known normal sound and an unknown normal sound, a feature amount which reflects a feature of the unknown normal sound, and to extract, from the time-series acoustic signal including at least an anomalous sound and a normal sound, a feature amount which reflects a feature of the anomalous sound.