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. 01, 2013
Filed:
Nov. 14, 2011
Corey I. Cheng, Framingham, MA (US);
Michael J. Smithers, Kareela, AU;
David N. Lathrop, Fremont, CA (US);
Corey I. Cheng, Framingham, MA (US);
Michael J. Smithers, Kareela, AU;
David N. Lathrop, Fremont, CA (US);
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Abstract
Estimates of spectral magnitude and phase are obtained by an estimation process using spectral information from analysis filter banks such as the Modified Discrete Cosine Transform. The estimation process may be implemented by convolution-like operations with impulse responses. Portions of the impulse responses may be selected for use in the convolution-like operations to trade off between computational complexity and estimation accuracy. Mathematical derivations of analytical expressions for filter structures and impulse responses are disclosed.