The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2024
Filed:
Apr. 22, 2022
Applicant:
Nxp B.v., Eindhoven, NL;
Inventor:
Temujin Gautama, Boutersem, BE;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 29/00 (2006.01); H04R 3/04 (2006.01);
U.S. Cl.
CPC ...
H04R 29/001 (2013.01); H04R 3/04 (2013.01);
Abstract
There is disclosed an audio playback system including a loudspeaker, a microphone and a means for implementing a method of detecting a fault which includes the generation and analysis of a specific ultrasound reference signal. The presence of the ultrasound reference signal can be detected on the microphone signal, and the signal-to-noise ratio can be estimated during the reference signal playback so that the volume of the reference signal can be adapted if necessary. The reference signal is a multi-sinusoidal signal which, when averaged over time increases the expected signal-to-noise ratio, and hence, the power of the detector.