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. 23, 2018
Filed:
Sep. 19, 2017
Applicant:
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Inventors:
Vitaliy Sapozhnykov, Cheltenham, AU;
Henry Chen, Glenhuntly, AU;
Assignee:
Cirrus Logic, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 3/14 (2006.01); H04R 5/04 (2006.01); H04R 3/04 (2006.01);
U.S. Cl.
CPC ...
H04R 3/14 (2013.01); H04R 5/04 (2013.01); H04R 3/04 (2013.01); H04R 2430/01 (2013.01);
Abstract
A crosstalk canceller for reducing acoustic crosstalk at a time of audio playback is derived by forming a channel frequency response for a nominated playback geometry, and decomposing the channel frequency response to derive a decomposition element such as a singular value decomposition matrix. A value of the decomposition element, such as the smallest singular value, is then adjusted to reduce spectral coloration, and filter coefficients of a crosstalk cancellation filter are derived from the adjusted decomposition element.