公开(公告)号：US10123143B2

公开(公告)日：2018-11-06

申请号：US15276437

申请日：2016-09-26

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Vamsikrishna Parupalli ,  Lingli Zhang ,  Jeremy Babcock ,  Marc L. Tarabbia

IPC: H04R29/00 ,  H04R3/00

Abstract: Errors in measurements of a resistor to monitor current through a speaker may be corrected to improve the accuracy, performance, or quality of other signals affected by the measurement. Error may occur in the current measurement resulting from variations in measurements involving the resistor, such as errors based on the sense resistor's response to temperature or voltage differential. Correcting the measurement errors can prevent the overcurrent condition from occurring, and otherwise improve audio output from the speaker. Thus, a method for correcting measurements in a speaker monitoring circuit may include monitoring a current through a speaker by receiving a measurement that is correlated to the current output through the speaker; and correcting the measurement for one or more inaccuracies in the measurement.

公开(公告)号：US20180091911A1

公开(公告)日：2018-03-29

申请号：US15276437

申请日：2016-09-26

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Vamsikrishna Parupalli ,  Lingli Zhang ,  Jeremy Babcock ,  Marc L. Tarabbia

IPC: H04R29/00 ,  H04R3/00

CPC classification number: H04R29/001 ,  H04R3/007

Abstract: Errors in measurements of a resistor to monitor current through a speaker may be corrected to improve the accuracy, performance, or quality of other signals affected by the measurement. Error may occur in the current measurement resulting from variations in measurements involving the resistor, such as errors based on the sense resistor's response to temperature or voltage differential. Correcting the measurement errors can prevent the overcurrent condition from occurring, and otherwise improve audio output from the speaker. Thus, a method for correcting measurements in a speaker monitoring circuit may include monitoring a current through a speaker by receiving a measurement that is correlated to the current output through the speaker; and correcting the measurement for one or more inaccuracies in the measurement.