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. 16, 2019
Filed:
Feb. 01, 2018
Knowles Electronics, Llc, Itasca, IL (US);
Jonathon Ray, Itasca, IL (US);
Anil Kumar Yadav, Itasca, IL (US);
Knowles Electronics, LLC, Itasca, IL (US);
Abstract
A method for reducing noise within an acoustic signal includes receiving at least a primary acoustic signal from a primary microphone and a secondary acoustic signal from a different, secondary microphone, wherein the primary acoustic signal includes a speech component emanating from a user and a noise component. The method also includes measuring a first value of a first coefficient based on the primary and secondary signals and performing a noise cancellation process based on the measured first value of the first coefficient to produce a set of noise-cancelled primary sub-bands. The method also includes generating, by the processor, a set of multiplicative gain mask values, the multiplicative gain mask values having a frequency dependency that is based at least in part on a pre-indicated approximate sound pressure level of the speech component.