公开(公告)号：US11653150B2

公开(公告)日：2023-05-16

申请号：US17516830

申请日：2021-11-02

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John Paul Lesso ,  Mark James McCloy-Stevens ,  John Bruce Bowlerwell ,  Yanto Suryono ,  Xin Zhao ,  Morgan Timothy Prior

IPC: H04R5/04 ,  H03F3/183 ,  H03G3/30 ,  H04R29/00 ,  H04S1/00 ,  H04R5/02

CPC classification number: H04R5/04 ,  H03F3/183 ,  H03G3/3005 ,  H04R5/02 ,  H04R29/001 ,  H04S1/007 ,  H03G2201/103

Abstract: This application relates to audio driving circuitry (100), and in particular to audio driving circuitry for outputting first and second audio driving signals for driving a stereo audio load (106), which may be a stereo audio load of an accessory apparatus (102) removably coupled to the audio driving circuitry in use. A load monitor (111) is provided for monitoring to monitor, from a monitoring node (112), an indication of a common mode return current passing through a common return path, together with an indication of a common mode component of the first and second audio driving signals and to determine an impedance characteristic of the stereo audio load. The load monitor (111) can provide dynamic monitoring of any significant change in load impedance. In some embodiments the load monitor (111) comprises an adaptive filter (301) which adapts a parameter of the filter which is related to the load impedance so as to determine the indication of load impedance.

公开(公告)号：US11219386B2

公开(公告)日：2022-01-11

申请号：US17097919

申请日：2020-11-13

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John P. Lesso ,  Yanto Suryono ,  Toru Ido

IPC: A61B5/08 ,  A61B5/00

Abstract: A method of cough detection in a headset, the method comprising: receiving a first signal from an external transducer of the headset; receiving a second signal from an in-ear transducer of the headset; and detecting a cough of a user of the headset based on the first and second signals.

公开(公告)号：US11918345B2

公开(公告)日：2024-03-05

申请号：US18298573

申请日：2023-04-11

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John P. Lesso ,  Yanto Suryono ,  Toru Ido

IPC: A61B5/08 ,  A61B5/00

CPC classification number: A61B5/0823 ,  A61B5/0803 ,  A61B5/6803 ,  A61B5/7246 ,  A61B5/725 ,  A61B5/7264 ,  A61B5/7275 ,  A61B2562/0219

Abstract: A method of cough detection in a headset, the method comprising: receiving a first signal from an external transducer of the headset; receiving a second signal from an in-ear transducer of the headset; and detecting a cough of a user of the headset based on the first and second signals.

公开(公告)号：US11653855B2

公开(公告)日：2023-05-23

申请号：US17541904

申请日：2021-12-03

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John P. Lesso ,  Yanto Suryono ,  Toru Ido

IPC: A61B5/08 ,  A61B5/083 ,  A61B5/00

CPC classification number: A61B5/0823 ,  A61B5/0803 ,  A61B5/6803 ,  A61B5/725 ,  A61B5/7246 ,  A61B5/7264 ,  A61B5/7275 ,  A61B2562/0219

Abstract: A method of cough detection in a headset, the method comprising: receiving a first signal from an external transducer of the headset; receiving a second signal from an in-ear transducer of the headset; and detecting a cough of a user of the headset based on the first and second signals.

公开(公告)号：US11206487B2

公开(公告)日：2021-12-21

申请号：US16709075

申请日：2019-12-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John Paul Lesso ,  Mark James Mccloy-Stevens ,  John Bruce Bowlerwell ,  Yanto Suryono ,  Xin Zhao ,  Morgan Timothy Prior

IPC: H04R5/04 ,  H03F3/183 ,  H03G3/30 ,  H04R29/00 ,  H04S1/00 ,  H04R5/02

Abstract: This application relates to audio driving circuitry (100), and in particular to audio driving circuitry for outputting first and second audio driving signals for driving a stereo audio load (106), which may be a stereo audio load of an accessory apparatus (102) removably coupled to the audio driving circuitry in use. A load monitor (111) is provided for monitoring to monitor, from a monitoring node (112), an indication of a common mode return current passing through a common return path, together with an indication of a common mode component of the first and second audio driving signals and to determine an impedance characteristic of the stereo audio load. The load monitor (111) can provide dynamic monitoring of any significant change in load impedance. In some embodiments the load monitor (111) comprises an adaptive filter (301) which adapts a parameter of the filter which is related to the load impedance so as to determine the indication of load impedance.

公开(公告)号：US12144606B2

公开(公告)日：2024-11-19

申请号：US18406665

申请日：2024-01-08

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John P. Lesso ,  Yanto Suryono ,  Toru Ido

IPC: A61B5/08 ,  A61B5/00

Abstract: A method of cough detection in a headset, the method comprising: receiving a first signal from an external transducer of the headset; receiving a second signal from an in-ear transducer of the headset; and detecting a cough of a user of the headset based on the first and second signals.

公开(公告)号：US12041434B2

公开(公告)日：2024-07-16

申请号：US18296266

申请日：2023-04-05

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John Paul Lesso ,  Mark James Mccloy-Stevens ,  John Bruce Bowlerwell ,  Yanto Suryono ,  Xin Zhao ,  Morgan Timothy Prior

IPC: H04R5/04 ,  H03F3/183 ,  H03G3/30 ,  H04R5/02 ,  H04R29/00 ,  H04S1/00

CPC classification number: H04R5/04 ,  H03F3/183 ,  H03G3/3005 ,  H04R5/02 ,  H04R29/001 ,  H04S1/007 ,  H03G2201/103

Abstract: This application relates to audio driving circuitry (100), and in particular to audio driving circuitry for outputting first and second audio driving signals for driving a stereo audio load (106), which may be a stereo audio load of an accessory apparatus (102) removably coupled to the audio driving circuitry in use. A load monitor (111) is provided for monitoring to monitor, from a monitoring node (112), an indication of a common mode return current passing through a common return path, together with an indication of a common mode component of the first and second audio driving signals and to determine an impedance characteristic of the stereo audio load. The load monitor (111) can provide dynamic monitoring of any significant change in load impedance. In some embodiments the load monitor (111) comprises an adaptive filter (301) which adapts a parameter of the filter which is related to the load impedance so as to determine the indication of load impedance.

公开(公告)号：US10375493B2

公开(公告)日：2019-08-06

申请号：US16009638

申请日：2018-06-15

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John Paul Lesso ,  Yanto Suryono

IPC: H04R29/00 ,  H04R3/04 ,  G10L19/12 ,  G01R31/3167 ,  G10L19/04

Abstract: An audio system receives an input signal and, if the input signal has a sparse representation in the frequency domain, comprising components at at least one frequency of interest, the input signal is filtered in at least one band pass filter, such that only components at the or each frequency of interest are passed to an output. The operation is able in some case to analyze the input signal to determine whether the input signal has a sparse representation in the frequency domain.