公开(公告)号：US09992571B2

公开(公告)日：2018-06-05

申请号：US15149987

申请日：2016-05-09

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Rong Hu ,  Zheng Yan ,  Jie Su

IPC: H03G11/00 ,  H04R3/00 ,  H04R29/00

CPC classification number: H04R3/007 ,  H04R29/001

Abstract: In accordance with embodiments of the present disclosure, a controller configured to be coupled to an audio transducer, may be further configured to receive an audio input signal, calculate a displacement compensation signal in a displacement domain of the audio transducer based on the audio input signal, convert the displacement compensation signal from the displacement domain into a voltage compensation signal in a voltage domain, and apply the voltage compensation signal to the audio input signal, or a derivative thereof, to minimize overexcursion of the audio transducer.