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:
Mar. 05, 2024
Filed:
May. 07, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Sachiko Kurihara, Tokyo, JP;
Noboru Harada, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
To improve accuracy of an evaluation in an acoustic quality evaluation test performed by comparing an evaluation target sound and a reference sound. A data correction apparatuscompares, in a call performed between a near-end terminaland a far-end terminal, an evaluation target sound in which a voice output from the near-end terminalis recorded and a reference sound in which a voice spoken by a call partner using the far-end terminalto correct test data used in a listening test for evaluating acoustic quality of the call. A correction target determination unitdetermines, as a correction target section, a voiced section that does not include the voice of the call partner detected from an acoustic signal representing the reference sound. A correction execution unitupdates the correction target section of the acoustic signal representing the reference sound with a non-voice signal predetermined.