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. 18, 2022
Filed:
Mar. 15, 2018
Audio-technica Corporation, Tokyo, JP;
Kazuhiro Onizuka, Tokyo, JP;
Toru Aikawa, Chiba, JP;
Yasuhito Kikuhara, Tokyo, JP;
Yuri Jitsukata, Kanagawa, JP;
AUDIO-TECHNICA CORPORATION, Tokyo, JP;
Abstract
A sound signal processing device, a sound signal processing method, and a sound signal processing program can remove echo signals included in input signals from a plurality of microphones with a simple circuit configuration are provided. The present deviceincludes an output partthat outputs a reception signal s, an input partthat combines signals input from each of a plurality of microphonesand generates a transmission signal s, wherein the microphonescollect an echo component of the reception signal and voice of a speaker and generate an echo signal es corresponding to the echo component and a sound signal scorresponding to the voice of the speaker, a removal signal generatorthat generates a removal signal sremoving the echo signal included in the transmission signal based on a filter coefficient F, a controllerthat calculates the filter coefficient, and a removal partthat generates an echo removal signal sbased on the transmission signal and the removal signal. The controller calculates individual filter coefficients k corresponding to the respective microphones, and calculate the filter coefficient by combining the individual filter coefficients.