US 11,716,584 B2
Parametric audio decoding
Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Seattle, WA (US); and Venkatraman Atti, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 23, 2021, as Appl. No. 17/409,749.
Application 17/409,749 is a continuation of application No. 16/919,483, filed on Jul. 2, 2020, granted, now 11,102,600, issued on Aug. 24, 2021.
Application 16/919,483 is a continuation of application No. 16/437,518, filed on Jun. 11, 2019, granted, now 10,757,521, issued on Aug. 25, 2020.
Application 16/437,518 is a continuation of application No. 15/708,717, filed on Sep. 19, 2017, granted, now 10,362,423, issued on Jul. 23, 2019.
Claims priority of provisional application 62/407,843, filed on Oct. 13, 2016.
Prior Publication US 2021/0385601 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04S 3/00 (2006.01); H04S 1/00 (2006.01); G10L 19/008 (2013.01); G10L 19/022 (2013.01); G10L 19/02 (2013.01)
CPC H04S 3/008 (2013.01) [G10L 19/008 (2013.01); H04S 1/007 (2013.01); G10L 19/022 (2013.01); G10L 19/0204 (2013.01); H04S 2400/01 (2013.01); H04S 2420/03 (2013.01); H04S 2420/07 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a receiver configured to receive a bitstream that includes an encoded mid signal and encoded stereo parameter information, the encoded stereo parameter information representing:
a first value of a stereo parameter, the first value associated with a first frequency range; and
a second value of the stereo parameter, the second value associated with a second frequency;
a mid signal decoder configured to decode the encoded mid signal to generate a decoded mid signal;
a transform unit configured to perform a transform operation on the decoded mid signal to generate a frequency-domain decoded mid signal;
a stereo decoder configured to decode the encoded stereo parameter information to determine the first value and the second value;
a stereo parameter conditioner configured to perform a conditioning operation on the first value and the second value to generate a conditioned value of the stereo parameter, the conditioned value associated with a particular frequency range that is a subset of the first frequency range or a subset of the second frequency range;
an up-mixer configured to perform an up-mix operation on the frequency-domain decoded mid signal to generate a first frequency-domain output signal and a second frequency-domain output signal, the conditioned value applied to the frequency-domain decoded mid signal during the up-mix operation; and
an output device configured to output a first output signal and a second output signal, the first output signal based on the first frequency-domain output signal and the second output signal based on the second frequency-domain output signal.