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. 28, 2020
Filed:
Sep. 28, 2018
Apple Inc., Cupertino, CA (US);
Sean A. Ramprashad, Los Altos, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An aspect of this disclosure relates to noise and/or echo suppression for a device in which noise and echo suppression are adaptively determined as noise and echo change in an environment that surrounds the device. An aspect can use a skewed maximal ratio combining technique or a spatial filter with coefficients that are adaptively determined based on a perceptually selected target ratio that is compared to a ratio of sound energies/levels based on a pair of the coefficients. Another aspect relates to the use of information in one frequency band to perform additional noise and/or echo suppression in one or more adjacent frequency bands.