公开(公告)号：US20200036356A1

公开(公告)日：2020-01-30

申请号：US16169723

申请日：2018-10-24

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Hezi ZHU ,  Roberto NAPOLI ,  Jie SU ,  Waleed ESHMAWY

IPC: H03G7/00 ,  H03F1/32 ,  H03G11/00

Abstract: A method for compensating for a change in back electric motive force in a transducer in a device, wherein the transducer is driven by an output signal output by an amplifier, and a back volume of the transducer is formed by an enclosure within the device. The method comprises: receiving an input signal; determining, based on a characteristic of the transducer that the transducer has moved from an equilibrium position within the device; and based on the determination, adjusting a gain applied to the input signal by the amplifier to generate the output signal.