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:
Feb. 01, 2011
Filed:
Sep. 26, 2003
Edward L. Reuss, Santa Cruz, CA (US);
Edward L. Reuss, Santa Cruz, CA (US);
Plantronics, Inc., Santa Cruz, CA (US);
Abstract
Systems and methods for adaptive sidetone and adaptive voice activity detect (VAD) threshold for speech processing are disclosed. The VAD system generally includes an adaptive VAD threshold generator configured to generate a VAD threshold based on an increase in voice level resulting from sidetone attenuation and a comparator for comparing received signals to the adaptive VAD threshold to determine the existence of voice activity. The sidetone attenuation is based on an average ambient noise energy level determined from a noise energy amplitude during periods of no voice activity and a comparator for comparing received signals to the adaptive VAD threshold to determine existence of voice activity.