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:
Oct. 14, 2025
Filed:
Aug. 28, 2019
Ntt, Inc., Tokyo, JP;
NTT, INC., Tokyo, JP;
Abstract
A channel in which an utterance of a keyword is included is selected from acoustic signals of multiple channels. An addition unitadds all channels of input voice signals of multiple channels to generate a composite voice signal of one channel. A keyword detection unitgenerates a keyword detection result indicating a result of detecting an utterance of a predetermined keyword from a composite voice signal. A power calculation unitcalculates powers of channels based on input voice signals. A delay unitdelays the powers of the channels. When the keyword detection result indicates that the keyword was detected, a maximum power detection unitselects, as an output channel, a channel having the maximum power among the powers of the channels of the input voice signals. A channel selection unitselects the voice signal of the output channel from the input voice signals and outputs the selected voice signal.