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. 05, 2016
Filed:
Mar. 14, 2013
Qualcomm Incorporated, San Diego, CA (US);
Erik Visser, San Diego, CA (US);
Lae-Hoon Kim, San Diego, CA (US);
Jongwon Shin, Gwangju, KR;
Yinyi Guo, San Diego, CA (US);
Sang-Uk Ryu, San Diego, CA (US);
Andre Gustavo P. Schevciw, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A method for signal level matching by an electronic device is described. The method includes capturing a plurality of audio signals from a plurality of microphones. The method also includes determining a difference signal based on an inter-microphone subtraction. The difference signal includes multiple harmonics. The method also includes determining whether a harmonicity of the difference signal exceeds a harmonicity threshold. The method also includes preserving the harmonics to determine an envelope. The method further applies the envelope to a noise-suppressed signal.