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:
Sep. 04, 2018
Filed:
Dec. 24, 2014
Applicant:
Hytera Communications Corp., Ltd., Shenzhen, Guangdong, CN;
Inventor:
Ni Huang, Guangdong, CN;
Assignee:
Hytera Communications Corporation Limited, Shenzhen, Guangdong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 15/00 (2006.01); H04R 3/02 (2006.01);
U.S. Cl.
CPC ...
H04R 3/02 (2013.01); G10H 2250/235 (2013.01);
Abstract
An acoustic feedback detection method and device. According to the method, whether acoustic feedback occurs is determined based on a frequency characteristic of an acoustic feedback signal. Specifically, a judgment value is determined using a power peak value and an average peak value, and it is determined whether acoustic feedback occurs in a signal based on a magnitude of the judgment value and a duration of the power peak value. In this case, whether acoustic feedback occurs can be determined based on the frequency characteristic of the signal.