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:
Jun. 28, 2022
Filed:
Jun. 05, 2019
Applicant:
Transtron Inc., Kanagawa, JP;
Inventor:
Yuki Satomi, Kanagawa, JP;
Assignee:
TRANSTRON INC., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 9/08 (2006.01); H04B 3/20 (2006.01);
U.S. Cl.
CPC ...
H04M 9/082 (2013.01); H04B 3/20 (2013.01);
Abstract
An echo is allowed to be effectively removed while a processing load on an arithmetic device is reduced. When a magnitude of a reference signal transmitted to a speaker is equal to or greater than a first threshold, a learning algorithm using nonlinear processing is selected. When the magnitude of the reference signal is smaller than the first threshold, a learning algorithm using linear processing is selected. The echo is learnt using the selected learning algorithm to remove an echo included in an input signal picked up by a microphone based on a learning result.