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:
Oct. 20, 2015
Filed:
Apr. 22, 2011
Applicants:
Erik Visser, San Diego, CA (US);
Ian Ernan Liu, San Diego, CA (US);
Jongwon Shin, San Diego, CA (US);
Inventors:
Erik Visser, San Diego, CA (US);
Ian Ernan Liu, San Diego, CA (US);
Jongwon Shin, San Diego, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10L 21/00 (2013.01); G10L 25/78 (2013.01);
U.S. Cl.
CPC ...
G10L 25/78 (2013.01);
Abstract
Implementations and applications are disclosed for detection of a transition in a voice activity state of an audio signal, based on a change in energy that is consistent in time across a range of frequencies of the signal. For example, such detection may be based on a time derivative of energy for each of a number of different frequency components of the signal.