公开(公告)号：US11868540B2

公开(公告)日：2024-01-09

申请号：US17096598

申请日：2020-11-12

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ryan Hellman

IPC: G06F3/02 ,  G01L1/14 ,  G01L1/00 ,  G01L1/18 ,  G01L1/16

CPC classification number: G06F3/0202 ,  G01L1/005 ,  G01L1/14 ,  G01L1/162 ,  G01L1/183

Abstract: A method for determining sensor parameters of an actively-driven sensor system may include obtaining as few as three samples of a measured physical quantity versus frequency for the actively-driven sensor system, performing a refinement operation to provide a refined version of the sensor parameters based on the as few as three samples and based on a linear model of an asymmetry between slopes of the measured physical quantity versus frequency between pairs of the as few as three samples, iteratively repeating the refinement operation until the difference between successive refined versions of the sensor parameters is below a defined threshold, and outputting the refined sensor parameters as updated sensor parameters for the actively-driven sensor system.

公开(公告)号：US12047757B2

公开(公告)日：2024-07-23

申请号：US17749473

申请日：2022-05-20

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Viral Parikh ,  Jaiminkumar Mehta ,  Ryan Hellman

IPC: H04R3/04 ,  G01R19/00 ,  G01R23/16 ,  G01R23/165 ,  G01R27/02 ,  G01R27/08 ,  H03F1/34 ,  H03F3/183 ,  H03F3/217 ,  H04R3/00 ,  H04R3/08 ,  H04R9/02 ,  H04R9/06 ,  H04R29/00

CPC classification number: H04R3/04 ,  G01R19/0007 ,  G01R23/16 ,  G01R23/165 ,  G01R27/02 ,  G01R27/08 ,  H03F1/34 ,  H03F3/183 ,  H03F3/217 ,  H04R3/002 ,  H04R3/08 ,  H04R9/02 ,  H04R9/06 ,  H04R29/001 ,  H04R2400/13

Abstract: A method may include measuring a physical quantity associated with a load driven by an amplifier, generating a windowing function having a variable length and based on a number of samples of the physical quantity to be processed, applying the windowing function to the physical quantity, performing a transform on the physical quantity as filtered by the windowing function, and determining a characteristic of the load based on the transform.