公开(公告)号：US11641558B2

公开(公告)日：2023-05-02

申请号：US17108433

申请日：2020-12-01

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Anindya Bhattacharya ,  Bhoodev Kumar ,  Jaimin Mehta ,  Yongsheng Shi ,  Aleksey S. Khenkin ,  John L. Melanson

IPC: H04R29/00

Abstract: A method and apparatus for detecting a microphone condition of a microphone, the method comprising: applying an electrical stimulus to a microphone; measuring an electrical response to the electrical stimulus at the microphone; comparing the electrical response to an expected response; and determining the microphone condition based on the comparison.

公开(公告)号：US11316523B1

公开(公告)日：2022-04-26

申请号：US17308741

申请日：2021-05-05

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Saurabh Singh ,  Jaimin Mehta ,  Sriram Balasubramanian ,  Anindya Bhattacharya

IPC: H03L7/099 ,  G06F1/12 ,  H03L7/093

Abstract: A system may include a digitally-controlled oscillator configured to generate an output clock signal based on a control signal received at an input of the digitally-controlled oscillator and a control circuit configured to calculate an error signal between the output clock signal and an external reference clock signal, filter the error signal to generate a correction signal, generate the control signal based on the correction signal, and switch between a first mode of operation and a second mode of operation without artifacts on the correction signal during switching between the first mode and the second mode.

公开(公告)号：US10117020B2

公开(公告)日：2018-10-30

申请号：US15131886

申请日：2016-04-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Jaimin Mehta ,  James Thomas Deas ,  Stephen T. Hodapp ,  Brian Parker Chesney

IPC: H03G11/00 ,  H04R3/00 ,  H04R29/00 ,  H04R19/00

Abstract: A system may include control circuitry for detecting a plosive event associated with a microphone transducer and in response to the plosive event, causing restoration of acoustic sense operation of the microphone transducer and a processing circuit associated with the microphone transducer. A system for configuring a filter having at least two frequency response configurations to achieve an effective frequency response configuration intermediate to the at least two frequency response configurations may include control circuitry for rapidly switching between the at least two frequency response configurations such that a weighted average frequency response of the filter corresponds to the effective frequency response configuration.

公开(公告)号：US09743182B2

公开(公告)日：2017-08-22

申请号：US15131940

申请日：2016-04-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Jaimin Mehta ,  Stephen T. Hodapp

IPC: H04B15/00 ,  H04R3/04 ,  H03G5/22 ,  H03G11/04

CPC classification number: H04R3/04 ,  H03G5/22 ,  H03G11/04 ,  H03H2017/0295 ,  H03H2210/01 ,  H04R3/007 ,  H04R19/005 ,  H04R19/04

Abstract: A system may include control circuitry for detecting a plosive event associated with a microphone transducer and in response to the plosive event, causing restoration of acoustic sense operation of the microphone transducer and a processing circuit associated with the microphone transducer. A system for configuring a filter having at least two frequency response configurations to achieve an effective frequency response configuration intermediate to the at least two frequency response configurations may include control circuitry for rapidly switching between the at least two frequency response configurations such that a weighted average frequency response of the filter corresponds to the effective frequency response configuration.