US 12,302,073 B2
Non-intrusive transducer health detection
Joseph McKee, Wollstonecraft (AU); Timothy Alan Port, Drummoyne (AU); and Paul Holmberg, North Ryde (AU)
Assigned to Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Appl. No. 18/000,835
Filed by Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
PCT Filed Jun. 21, 2021, PCT No. PCT/US2021/038187
§ 371(c)(1), (2) Date Dec. 6, 2022,
PCT Pub. No. WO2021/258037, PCT Pub. Date Dec. 23, 2021.
Claims priority of provisional application 63/041,685, filed on Jun. 19, 2020.
Claims priority of application No. 20181112 (EP), filed on Jun. 19, 2020.
Prior Publication US 2023/0232174 A1, Jul. 20, 2023
Int. Cl. H04R 29/00 (2006.01)
CPC H04R 29/001 (2013.01) [H04R 29/004 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method performed by an audio system, comprising:
encoding a test signal on an inaudible acoustic signal;
outputting, using a first transducer of the audio system, the encoded inaudible acoustic signal into an acoustic transmission medium;
receiving, using a second transducer of the audio system, the encoded inaudible acoustic signal from the acoustic transmission medium;
recovering a recovered test signal from the received encoded inaudible acoustic signal;
using the recovered test signal to identify a failure or degradation of at least one of the first or second transducer, wherein using the recovered test signal to identify a failure or degradation further includes:
determining an impulse response of the audio system based on the recovered test signal and the test signal;
determining background noise of the acoustic transmission medium;
determining, based on the impulse response and background noise, a signal-to-noise ratio (SNR); and
identifying a failure or degradation of the at least one of the first or second transducer based on the SNR.