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:
Dec. 29, 2015
Filed:
Nov. 10, 2011
Rhonda Wilson, San Francisco, CA (US);
Michael Ward, San Francisco, CA (US);
Steven Venezia, Simi Valley, CA (US);
Roger Dressler, Bend, OR (US);
Rhonda Wilson, San Francisco, CA (US);
Michael Ward, San Francisco, CA (US);
Steven Venezia, Simi Valley, CA (US);
Roger Dressler, Bend, OR (US);
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Abstract
The invention relates to downmixing techniques by which output audio signals are obtained from input audio signals partitioned into subgroups. A variable common gain limiting factor is applied to all downmix coefficients that govern the contributions from the input signals in a subgroup. While preserving the proportions between signal values within a subgroup, the invention makes it possible to limit the gain of different input signal subgroups to different extents, so that relatively more perceptible signals can be limited relatively less. It then becomes possible to achieve a consistent dialogue level while transitioning in a less perceptible fashion between signal portions with and without gain limiting. Embodiments of the invention include a method, a mixing system and a computer-program product.