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:
Jan. 07, 2025
Filed:
Jun. 04, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Kazunori Kobayashi, Tokyo, JP;
Ryotaro Sato, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
There are included a first speaker processing step in which a first speakerproduces sound based on a first filtered signal, a gain multiplication step in which a gain multiplication unitgenerates a gain multiplied signal by multiplying a second filtered signal by a gain, a second speaker processing step in which a second speakerproduces sound based on the gain multiplied signal, and a gain control step in which a gain control unitcontrols the gain such that a root mean square of a collected sound signal collected by a microphoneinstalled at a mute position, which is a position at which the sound produced by the first speaker and the sound produced by the second speaker are to be muted, is relatively small.