公开(公告)号：US20200058285A1

公开(公告)日：2020-02-20

申请号：US16539092

申请日：2019-08-13

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Viral PARIKH ,  Jon D. HENDRIX ,  Jeffrey D. ALDERSON ,  Vitaliy SAPOZHNYKOV ,  Nafiseh ERFANIAN SAEEDI ,  Thomas I. HARVEY ,  Robert LUKE

IPC: G10K11/178

Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include an output for providing an output signal to a transducer, wherein the output signal includes a pilot signal, a microphone input for receiving a microphone signal from a microphone indicative of an output of the transducer, and a processing circuit. The processing circuit may be configured to implement a pilot signal control to apply an adjustment to the pilot signal as necessary to maintain the pilot signal at a substantially constant magnitude regardless of proximity of the transducer to a pinna and implement a proximity determination block configured to determine proximity of the transducer to the pinna based on the adjustment.

公开(公告)号：US20190342683A1

公开(公告)日：2019-11-07

申请号：US16515934

申请日：2019-07-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Robert LUKE ,  Vitaliy SAPOZHNYKOV ,  Thomas Ivan HARVEY

IPC: H04R29/00 ,  H04R1/40 ,  H04R3/00

Abstract: Detection of a blocked microphone involves receiving microphone signals from a plurality of microphones. A plurality of signal feature measures are derived from the microphone signals. The signal feature measures are normalised. The normalised signal feature measures are variably weighted in response to detected environmental conditions in the microphone signals. The variably weighted normalised signal feature measures are combined to produce an output indication of whether a microphone is blocked.

公开(公告)号：US20190200114A1

公开(公告)日：2019-06-27

申请号：US16288451

申请日：2019-02-28

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Vitaliy SAPOZHNYKOV ,  Thomas Ivan HARVEY ,  Nafiseh ERFANIANSAEEDI ,  Robert LUKE

IPC: H04R1/10 ,  H04R1/40 ,  H04R3/00 ,  H04R29/00

CPC classification number: H04R1/1041 ,  G10K11/17815 ,  G10K11/17817 ,  G10K11/17823 ,  G10K11/17825 ,  G10K2210/1081 ,  G10K2210/30351 ,  G10K2210/3043 ,  G10K2210/3046 ,  G10K2210/503 ,  H04R1/1008 ,  H04R1/1016 ,  H04R1/406 ,  H04R3/005 ,  H04R29/001 ,  H04R2420/07

Abstract: A method and device for detecting whether a headset is on ear. Microphone signals from a plurality of microphones are used to derive a plurality of signal feature measures, which are normalized to a common reference scale. The signal feature measures are weighted based upon detected signal conditions in the microphone signals. The normalized and variably weighted signal feature measures are then combined to produce an output indication of whether a headset is on ear.

公开(公告)号：US20190244627A1

公开(公告)日：2019-08-08

申请号：US15887019

申请日：2018-02-02

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Vitaliy SAPOZHNYKOV ,  Thomas Ivan HARVEY ,  Robert LUKE

IPC: G10L21/0216 ,  G10L21/0264 ,  H04R3/00

CPC classification number: G10L21/0216 ,  G10L21/0264 ,  H04R3/00 ,  H04R2410/07 ,  H04R2430/03

Abstract: A device for measuring wind noise comprises at least a first microphone and a processor. A first signal and a second signal are obtained from the at least one microphone, the first and second signals reflecting a common acoustic input, and the first and second signals being at least one of temporally distinct and spatially distinct. The first signal is processed to determine a first distribution of the samples of the first signal. The second signal is processed to determine a second distribution of the samples of the second signal. From a difference between the first distribution and the second distribution a scalar non-binary metric reflecting an intensity of wind noise present in the first and second signals is derived, and output.

公开(公告)号：US20190110120A1

公开(公告)日：2019-04-11

申请号：US16125950

申请日：2018-09-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Vitaliy SAPOZHNYKOV ,  Thomas Ivan HARVEY ,  Nafiseh ERFANIANSAEEDI ,  Robert LUKE

IPC: H04R1/10 ,  H04R1/40 ,  H04R3/00 ,  H04R29/00

Abstract: A method and device for detecting whether a headset is on ear. Microphone signals from a plurality of microphones are used to derive a plurality of signal feature measures, which are normalized to a common reference scale. The signal feature measures are weighted based upon detected signal conditions in the microphone signals. The normalized and variably weighted signal feature measures are then combined to produce an output indication of whether a headset is on ear.

公开(公告)号：US20190014429A1

公开(公告)日：2019-01-10

申请号：US16026103

申请日：2018-07-03

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Robert LUKE ,  Vitaliy SAPOZHNYKOV ,  Thomas Ivan HARVEY

IPC: H04R29/00 ,  H04R1/40 ,  H04R3/00

Abstract: Detection of a blocked microphone involves receiving microphone signals from a plurality of microphones. A plurality of signal feature measures are derived from the microphone signals. The signal feature measures are normalised. The normalised signal feature measures are variably weighted in response to detected environmental conditions in the microphone signals. The variably weighted normalised signal feature measures are combined to produce an output indication of whether a microphone is blocked.

公开(公告)号：US20210225352A1

公开(公告)日：2021-07-22

申请号：US17143848

申请日：2021-01-07

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Viral PARIKH ,  Jon D. HENDRIX ,  Jeffrey D. ALDERSON ,  Vitaliy SAPOZHNYKOV ,  Nafiseh Erfanian SAEEDI ,  Thomas I. HARVEY ,  Robert LUKE

IPC: G10K11/178

Abstract: An integrated circuit for implementing at least a portion of a personal audio device may include an output for providing an output signal to a transducer, wherein the output signal includes a pilot signal, a microphone input for receiving a microphone signal from a microphone indicative of an output of the transducer, and a processing circuit. The processing circuit may be configured to implement a pilot signal control to apply an adjustment to the pilot signal as necessary to maintain the pilot signal at a substantially constant magnitude regardless of proximity of the transducer to a pinna and implement a proximity determination block configured to determine proximity of the transducer to the pinna based on the adjustment.

公开(公告)号：US20190110121A1

公开(公告)日：2019-04-11

申请号：US16131299

申请日：2018-09-14

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Vitaliy SAPOZHNYKOV ,  Thomas Ivan HARVEY ,  Nafiseh ERFANIANSAEEDI ,  Robert LUKE

IPC: H04R1/10 ,  H04R29/00

Abstract: A method and device for detecting whether a headset is on ear. A probe signal is generated for acoustic playback from a speaker. A microphone signal from a microphone is received, the microphone signal comprising at least a portion of the probe signal as received at the microphone. The microphone signal is passed to a state estimator, to produce an estimate of at least one parameter of the portion of the probe signal contained in the microphone signal. The estimate of the at least one parameter is processed to determine whether the headset is on ear.