US 12,462,815 B2
Synchronizing enhanced audio transports with backward compatible audio transports
Dipanjan Sen, Dublin, CA (US); Shankar Thagadur Shivappa, San Diego, CA (US); Nils Günther Peters, San Diego, CA (US); and Ferdinando Olivieri, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jun. 24, 2019, as Appl. No. 16/450,682.
Claims priority of provisional application 62/693,784, filed on Jul. 3, 2018.
Prior Publication US 2020/0013426 A1, Jan. 9, 2020
Int. Cl. G10L 19/008 (2013.01); G10L 21/055 (2013.01); H04L 65/80 (2022.01)
CPC G10L 19/008 (2013.01) [G10L 21/055 (2013.01); H04L 65/80 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A method of processing a backward compatible bitstream conforming to a legacy transport format, the method comprising:
obtaining, from the backward compatible bitstream, a first audio transport stream representative of first audio data;
obtaining, from the backward compatible bitstream, a second audio transport stream representative of second audio data;
obtaining, from the backward compatible bitstream, one or more indications identifying synchronization information for one or more of the first audio transport stream and the second audio transport stream, wherein the synchronization information comprises: a first timestamp associated with each of one or more first portions of the first audio transport stream; and a second timestamp associated with each of one or more second portions of the second audio transport stream, and wherein each of the first timestamp and the second timestamp is an eight-bit integer that repeats cyclically;
synchronizing, based on the first timestamps and the second timestamps, each of the one or more first portion of the first audio transport stream and the one or more second portion of the second audio transport stream to obtain a single synchronized audio data stream;
obtaining, based on the single synchronized audio data stream, enhanced audio data; and
outputting the enhanced audio data to one or more speakers.