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:
Jan. 20, 2026
Filed:
Jun. 10, 2021
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Michael Eckert, New South Wales, AU;
Rishabh Tyagi, New South Wales, AU;
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Abstract
The present document describes a method () for encoding a multi-channel input signal () which comprises N different channels. The method () comprises, for a current frame of a sequence of frames, determining () whether the current frame is an active frame or an inactive frame using a signal and/or a voice activity detector, and determining () a downmix signal () based on the multi-channel input signal (), wherein the downmix signal () comprises N channels or less. In addition, the method () comprises determining () upmixing metadata () comprising a set of parameters for generating, based on the downmix signal (), a reconstructed multi-channel signal () comprising N channels, wherein the upmixing metadata () is determined in dependence of whether the current frame is an active frame or an inactive frame. The method () further comprises encoding () the upmixing metadata () into a bitstream.