US 12,470,885 B2
Orchestration of acoustic direct sequence spread spectrum signals for estimation of acoustic scene metrics
Benjamin John Southwell, Gledswood Hills (AU); David Gunawan, Sydney (AU); Mark R.P. Thomas, Walnut Creek, CA (US); and Christopher Graham Hines, Sydney (AU)
Assigned to Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Appl. No. 18/255,499
Filed by Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
PCT Filed Dec. 2, 2021, PCT No. PCT/US2021/061614
§ 371(c)(1), (2) Date Jun. 1, 2023,
PCT Pub. No. WO2022/120051, PCT Pub. Date Jun. 9, 2022.
Claims priority of provisional application 63/260,953, filed on Sep. 7, 2021.
Claims priority of provisional application 63/201,561, filed on May 4, 2021.
Claims priority of provisional application 63/121,085, filed on Dec. 3, 2020.
Claims priority of provisional application 63/120,887, filed on Dec. 3, 2020.
Prior Publication US 2024/0048931 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04S 7/00 (2006.01); H04R 5/02 (2006.01); H04R 5/04 (2006.01)
CPC H04S 7/301 (2013.01) [H04R 5/02 (2013.01); H04R 5/04 (2013.01); H04S 7/307 (2013.01); H04S 2400/15 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An audio processing method, comprising:
causing, by a control system, a first audio device of an audio environment to generate first direct sequence spread spectrum (DSSS) signals;
causing, by the control system, the first DSSS signals to be inserted into first audio playback signals corresponding to a first content stream, to generate first modified audio playback signals for the first audio device;
causing, by the control system, the first audio device to play back the first modified audio playback signals, to generate first audio device playback sound;
causing, by the control system, a second audio device of the audio environment to generate second DSSS signals;
causing, by the control system, the second DSSS signals to be inserted into a second content stream to generate second modified audio playback signals for the second audio device;
causing, by the control system, the second audio device to play back the second modified audio playback signals, to generate second audio device playback sound;
causing, by the control system, at least one microphone of the audio environment to detect at least the first audio device playback sound and the second audio device playback sound and to generate microphone signals corresponding to at least the first audio device playback sound and the second audio device playback sound;
causing, by the control system, the first DSSS signals and the second DSSS signals to be extracted from the microphone signals;
causing, by the control system, at least one acoustic scene metric to be estimated based, at least in part, on the first DSSS signals and the second DSSS signals; and
controlling one or more aspects of audio device playback based, at least in part, on the at least one acoustic scene metric.