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:
Apr. 18, 2023
Filed:
Oct. 18, 2015
Applicant:
Kopin Corporation, Westborough, MA (US);
Inventors:
Assignee:
SOLOS TECHNOLOGY LIMITED, Hong Kong, HK;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G10L 21/0216 (2013.01); G10L 25/84 (2013.01); G10L 25/78 (2013.01);
U.S. Cl.
CPC ...
G10L 21/0216 (2013.01); G10L 25/84 (2013.01); G10L 2021/02165 (2013.01); G10L 2025/786 (2013.01);
Abstract
Systems, apparatuses, and methods are described to increase a signal-to-noise ratio difference between a main channel and reference channel. The increased signal-to-noise ratio difference is accomplished with an adaptive threshold for a desired voice activity detector (DVAD) and shaping filters. The DVAD includes averaging an output signal of a reference microphone channel to provide an estimated average background noise level. A threshold value is selected from a plurality of threshold values based on the estimated average background noise level. The threshold value is used to detect desired voice activity on a main microphone channel.