US 11,908,310 B2
Methods and systems for detecting and managing unexpected spectral content in an amplifier system
Dana J. Taipale, Austin, TX (US); Jon D. Hendrix, Wimberley, TX (US); and Emmanuel A. Marchais, Dripping Springs, TX (US)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Dec. 13, 2021, as Appl. No. 17/549,399.
Claims priority of provisional application 63/213,357, filed on Jun. 22, 2021.
Prior Publication US 2022/0406152 A1, Dec. 22, 2022
Int. Cl. G08B 6/00 (2006.01)
CPC G08B 6/00 (2013.01) 24 Claims
OG exemplary drawing
 
13. A transducer driving system, comprising:
a driver output for driving an amplifier that drives an electromagnetic load;
a feedback input for receiving a signal driven by the amplifier in order to control a feedback loop of the transducer driving system; and
an unexpected spectral content detector and controller subsystem configured to:
detect unexpected spectral content in the signal;
declare an indicator event based on the detected unexpected spectral content;
determine whether the indicator event occurs in an undesired pattern; and
in response to the indicator event occurring in the undesired pattern, modify a behavior of the transducer driving system.