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    OPERATION OF A PERSONAL AUDIO DEVICE DURING INSERTION DETECTION
    31.
    发明申请
    OPERATION OF A PERSONAL AUDIO DEVICE DURING INSERTION DETECTION 审中-公开

    公开(公告)号：US20190335266A1

    公开(公告)日：2019-10-31

    申请号：US16397953

    申请日：2019-04-29

    Applicant: AVNERA CORPORATION

    Inventor： Michael Jon Wurtz ,  Amit Kumar ,  Jiajin An

    IPC: H04R1/10 ,  H04R3/04 ,  H04R29/00

    Abstract: A method of operating a personal audio device configured to be removed from and inserted into a user's ear can include generating an input signal by an input signal generating device. The method can also include determining whether an insertion event has occurred based on the generated input signal and causing the personal audio device to operate in a low power mode responsive to an absence of an insertion event determination after a first period of time. The method can also include causing the personal audio device to operate in an ultra-low power mode responsive to the absence of an insertion event determination after a second period of time that occurs after the first period of time, the ultra-low power mode having a lower power consumption than the low power mode.

    Noise cancellation system
    32.
    发明授权
    Noise cancellation system 有权

    公开(公告)号：US10096312B2

    公开(公告)日：2018-10-09

    申请号：US15683592

    申请日：2017-08-22

    Applicant: Avnera Corporation

    Inventor： Amit Kumar ,  Wai Laing Lee ,  Jianping Wen

    IPC: H03B29/00 ,  G10K11/178

    Abstract: An adaptive noise canceling system can include a noise cancellation processor having an audio input for receiving an input audio signal, a microphone input structured to receive one or more microphone signals from a monitored environment, and a filter processor structured to produce a filtering function based on one or more filter parameters. The system can also include an adaptivity processor structured to change the one or more filter parameters in the noise cancellation processor based on a changing operating environment of the adaptive noise canceling system.

    Earbud operation during earbud insertion detection
    35.
    发明授权
    Earbud operation during earbud insertion detection 有权

    公开(公告)号：US11611822B2

    公开(公告)日：2023-03-21

    申请号：US17806295

    申请日：2022-06-10

    Applicant: AVNERA CORPORATION

    Inventor： Michael Jon Wurtz ,  Amit Kumar ,  Jiajin An

    IPC: H04R1/10 ,  H04R29/00 ,  H04R3/04 ,  H04R1/08 ,  G10K11/178 ,  H03F13/00 ,  H03G7/00 ,  H03F3/181 ,  H03F3/60

    Abstract: A method of operating a headphone configured to be removed from and placed in close proximity to a user's ear can include generating an input signal by an input signal generating device. The method can also include determining whether an insertion event has occurred based on the generated input signal and causing the headphone to operate in 5 a low power mode responsive to an absence of an insertion event determination after a first period of time. The method can also include causing the headphone to operate in an ultra-low power mode responsive to the absence of an insertion event determination after a second period of time that occurs after the first period of time, the ultra-low power mode having a lower power consumption than the low power mode.

    Real-time acoustic processor
    36.
    发明授权
    Real-time acoustic processor 有权

    公开(公告)号：US10650797B2

    公开(公告)日：2020-05-12

    申请号：US16404514

    申请日：2019-05-06

    Applicant: Avnera Corporation

    Inventor： Amit Kumar

    IPC: G10K11/175 ,  G10K11/178

    Abstract: The disclosure includes an acoustic processing network comprising a Digital Signal Processor (DSP) operating at a first frequency and a Real-Time Acoustic Processor (RAP) operating at a second frequency higher than the first frequency. The DSP receives a noise signal from at least one microphone. The DSP then generates a noise filter based on the noise signal. The RAP receives the noise signal from the microphone and the noise filter from the DSP. The RAP then generates an anti-noise signal based on the noise signal and the noise filter for use in Active Noise Cancellation (ANC).

    User voice activity detection methods, devices, assemblies, and components
    37.
    发明授权
    User voice activity detection methods, devices, assemblies, and components 有权

    公开(公告)号：US10564925B2

    公开(公告)日：2020-02-18

    申请号：US15711793

    申请日：2017-09-21

    Applicant: Avnera Corporation

    Inventor： Jiajin An ,  Michael Jon Wurtz ,  David Wurtz ,  Manpreet Khaira ,  Amit Kumar ,  Shawn O'Connor ,  Shankar Rathoud ,  James Scanlan ,  Eric Sorensen

    IPC: G10L25/00 ,  G06F3/16 ,  G10L25/84 ,  H04R1/10 ,  H04R3/00 ,  G10L15/08 ,  G10L15/22 ,  H04R1/40

    Abstract: Many headsets include automatic noise cancellation (ANC) which dramatically reduces perceived background noise and improves user listening experience. Unfortunately, the voice microphones in these devices often capture ambient noise that the headsets output during phone calls or other communication sessions to other users. In response, many headsets and communication devices provide manual muting circuitry, but users frequently forget to turn the muting on and/or off, creating further problems as they communicate. To address this, the present inventors devised, among other things, an exemplary headset that detects the absence or presence of user speech, automatically muting and unmuting the voice microphone without user intervention. Some embodiments leverage relationships between feedback and feedforward signals in ANC circuitry to detect user speech, avoiding the addition of extra hardware to the headset. Other embodiments also leverage the speech detection function to activate and deactivate keyword detectors, and/or sidetone circuits, thus extending battery.

    HEADPHONE OFF-EAR DETECTION
    38.
    发明申请
    HEADPHONE OFF-EAR DETECTION 审中-公开

    公开(公告)号：US20190174218A1

    公开(公告)日：2019-06-06

    申请号：US16174067

    申请日：2018-10-29

    Applicant: Avnera Corporation

    Inventor： Amit Kumar ,  Shankar Rathoud ,  Mike Wurtz ,  Eric Etheridge ,  Eric Sorensen

    IPC: H04R1/10 ,  H04R3/00 ,  H04R29/00 ,  G10K11/178

    CPC classification number: H04R1/1041 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3027 ,  H04R1/1008 ,  H04R3/00 ,  H04R29/001 ,  H04R2460/01

    Abstract: Disclosed is a signal processor for headphone off-ear detection. The signal processor includes an audio output to transmit an audio signal toward a headphone speaker in a headphone cup. The signal processor also includes a feedback (FB) microphone input to receive a FB signal from a FB microphone in the headphone cup. The signal processor also includes an off-ear detection (OED) signal processor to determine an audio frequency response of the FB signal over an OED frame as a received frequency response. The OED processor also determines an audio frequency response of the audio signal times an off-ear transfer function between the headphone speaker and the FB microphone as an ideal off-ear response. A difference metric si generated comparing the received frequency response to the ideal off-ear frequency response. The difference metric is employed to detect when the headphone cup is disengaged from an ear.

    User Voice Activity Detection Methods, Devices, Assemblies, and Components
    40.
    发明申请
    User Voice Activity Detection Methods, Devices, Assemblies, and Components 审中-公开

    公开(公告)号：US20180225082A1

    公开(公告)日：2018-08-09

    申请号：US15711793

    申请日：2017-09-21

    Applicant: Avnera Corporation

    Inventor： Jiajin An ,  MIchael Jon Wurtz ,  David Wurtz ,  Manpreet Khaira ,  Amit Kumar ,  Shawn O'Connor ,  Shankar Rathoud ,  James Scanlan ,  Eric Sorensen

    IPC: G06F3/16 ,  G10L25/84 ,  H04R1/10 ,  H04R1/40 ,  H04R3/00 ,  G10L15/08 ,  G10L15/22

    Abstract: Many headsets include automatic noise cancellation (ANC) which dramatically reduces perceived background noise and improves user listening experience. Unfortunately, the voice microphones in these devices often capture ambient noise that the headsets output during phone calls or other communication sessions to other users. In response, many headsets and communication devices provide manual muting circuitry, but users frequently forget to turn the muting on and/or off, creating further problems as they communicate. To address this, the present inventors devised, among other things, an exemplary headset that detects the absence or presence of user speech, automatically muting and unmuting the voice microphone without user intervention. Some embodiments leverage relationships between feedback and feedforward signals in ANC circuitry to detect user speech, avoiding the addition of extra hardware to the headset. Other embodiments also leverage the speech detection function to activate and deactivate keyword detectors, and/or sidetone circuits, thus extending battery.

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