US 12,273,698 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. 18/255,550
Filed by Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
PCT Filed Dec. 2, 2021, PCT No. PCT/US2021/061534
§ 371(c)(1), (2) Date Jun. 1, 2023,
PCT Pub. No. WO2022/120006, PCT Pub. Date Jun. 9, 2022.
Claims priority of provisional application 63/260,954, 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 2024/0056757 A1, Feb. 15, 2024
Int. Cl. H04S 7/00 (2006.01); H04B 1/707 (2011.01)
CPC H04S 7/301 (2013.01) [H04B 1/707 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a loudspeaker system comprising at least one loudspeaker;
a microphone system comprising at least one microphone; and
a control system configured to:
receive a first content stream, the first content stream including first audio signals;
render the first audio signals to produce first audio playback signals;
generate first direct sequence spread spectrum (DSSS) signals;
insert the first DSSS signals into the first audio playback signals to generate first modified audio playback signals; and
cause the loudspeaker system to play back the first modified audio playback signals, to generate first audio device playback sound;
wherein the control system is further configured to:
receive, from the microphone system, microphone signals corresponding to at least the first audio device playback sound and to second through Nth audio device playback sound, the second through Nth audio device playback sound corresponding to second through Nth modified audio playback signals played back by second through Nth audio devices, the second through Nth modified audio playback signals including second through Nth DSSS signals;
extract at least the second through Nth DSSS signals from the microphone signals;
estimate at least one acoustic scene metric based, at least in part, on the second through Nth DSSS signals; and
control one or more aspects of audio device playback based, at least in part, on the at least one acoustic scene metric, or on both the at least one acoustic scene metric and at least one audio device characteristic.