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:
Jul. 23, 2019
Filed:
Jun. 03, 2016
Shenzhen Tcl Digital Technology Ltd., Shenzhen, Guangdong, CN;
Weibiao Gao, Shenzhen, CN;
Shenglin Zhu, Shenzhen, CN;
SHENZHEN TCL DIGITAL TECHNOLOGY LTD., Shenzhen, CN;
Abstract
Provided is a method for eliminating an echo. The method includes: obtaining a mixed signal of a mixture of a user's voice given out from the user and the echo given out from a loudspeaker, and obtaining a sound signal given out from the loudspeaker based on the volume of the sound given out from the loudspeaker, the sound signal being used as a reference signal; obtaining a gain coefficient of the reference signal based on comparing the mixed signal with the reference signal, and obtaining a gain signal of the reference signal through the gain coefficient; obtaining a compensation signal of the reference signal based on the gain signal and a corresponding preset compensation coefficient; inverting the compensation signal; and combining the inverted compensation signal with the mixed signal, so as to eliminate the echo given out from the loudspeaker. A system for eliminating the echo is also provided.