公开(公告)号：US10049653B2

公开(公告)日：2018-08-14

申请号：US15570273

申请日：2016-10-14

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Eric Sorensen

IPC: G10K11/178

Abstract: A system including an automatic noise canceling (ANC) headphone and a processor. The ANC headphone has a microphone configured to generate a microphone signal and at least two non-zero ANC gain levels. The processor is configured to receive the microphone signal, determine a characteristic of the microphone signal, identify a revised ANC level from the ANC gain levels based on a comparison of the characteristic to at least one threshold, and output a signal corresponding to the revised ANC level. Methods are also disclosed.

公开(公告)号：US20180053497A1

公开(公告)日：2018-02-22

申请号：US15683592

申请日：2017-08-22

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Wai Laing Lee ,  Jianping Wen

IPC: G10K11/178

CPC classification number: G10K11/178 ,  G10K11/17853 ,  G10K11/17873 ,  G10K11/17875 ,  G10K11/17879 ,  G10K2210/3016 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3028 ,  H04R2460/01

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.

公开(公告)号：US20170034619A1

公开(公告)日：2017-02-02

申请号：US15294556

申请日：2016-10-14

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Thomas Irrgang ,  Xudong Zhao

IPC: H04R3/00 ,  G10K11/178

CPC classification number: H04R3/005 ,  G10K11/178 ,  G10K2210/3028 ,  G10K2210/3051 ,  G10K2210/3056 ,  H04R1/1083 ,  H04R2410/05

Abstract: An audio system having low latency includes a digital audio processor as well as sensor inputs coupled to the processor. The sensor inputs may be microphone inputs. The audio processor operates at the same frequency as the sensor inputs, which is typically much higher than an audio signal provided to the audio processor. In some aspects the audio processor operates as a noise cancellation processor and does not include an audio input.

Abstract translation: 具有低延迟的音频系统包括数字音频处理器以及耦合到处理器的传感器输入。 传感器输入可以是麦克风输入。 音频处理器的工作频率与传感器输入的频率相同，传感器输入通常远高于提供给音频处理器的音频信号。 在一些方面，音频处理器用作噪声消除处理器，并且不包括音频输入。

公开(公告)号：US11463798B2

公开(公告)日：2022-10-04

申请号：US17221125

申请日：2021-04-02

Applicant: AVNERA CORPORATION

Inventor： Michael Jon Wurtz ,  Amit Kumar ,  Jiajin An

IPC: H04R1/10 ,  H04R29/00 ,  H04R3/04 ,  G10K11/178 ,  H04R1/08 ,  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.

公开(公告)号：US11373665B2

公开(公告)日：2022-06-28

申请号：US16242424

申请日：2019-01-08

Applicant: AVNERA CORPORATION

Inventor： David Wurtz ,  Michael Wurtz ,  Amit Kumar ,  Colin Doolittle

IPC: G10L21/00 ,  G10L21/02 ,  G10L21/0216 ,  H04M9/08 ,  G10K11/178 ,  G10L21/0208 ,  G10L15/20 ,  G10L25/78 ,  H04R1/10 ,  H04R5/033 ,  H04R3/00

Abstract: The disclosure includes a voice isolation system comprising an acoustic echo-cancelation subsystem configured to receive a plurality of input signals, subtract an interference component from the input signals, and provide a plurality of output signals. The system also includes an adaptive beamformer subsystem configured to receive the plurality of output signals from the acoustic echo-cancelation subsystem and compute a signal-to-noise ratio enhanced signal based on the received output signals. The system also includes a residual noise suppressor subsystem configured to attenuate at least one portion of the SNR enhanced signal received from the adaptive beamformer subsystem based on the at least one portion having an SNR below a predetermined SNR threshold. The system also includes an automatic gain control subsystem configured to process a signal outputted from the residual noise suppressor subsystem and transmit a resulting signal as an output signal.

公开(公告)号：US20210227313A1

公开(公告)日：2021-07-22

申请号：US17221125

申请日：2021-04-02

Applicant: AVNERA CORPORATION

Inventor： Michael Jon Wurtz ,  Amit Kumar ,  Jiajin An

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

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.

公开(公告)号：US11019419B2

公开(公告)日：2021-05-25

申请号：US16398043

申请日：2019-04-29

Applicant: AVNERA CORPORATION

Inventor： Michael Jon Wurtz ,  Amit Kumar ,  Jiajin An

IPC: H04R1/10 ,  H04R29/00 ,  H04R3/04 ,  G10K11/178 ,  H03F13/00 ,  H03G7/00 ,  H04R1/08 ,  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 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.

公开(公告)号：US20210003656A1

公开(公告)日：2021-01-07

申请号：US16603486

申请日：2018-04-11

Applicant: Portland State University ,  Avnera Corporation

Inventor： James McNames ,  Amit Kumar

IPC: G01S3/02 ,  G01S5/30 ,  G01S3/80 ,  G01S5/02

Abstract: A system includes at least one processor and at least one memory storing program instructions that, when executed by the at least one processor, cause the system to send an acoustic ranging transmitter signal between a plurality of calibration reference positions and at least one anchor point, receive an acoustic ranging receiver signal associated with the acoustic ranging transmitter signal and with distances between the plurality of calibration reference positions and the at least one anchor point, and estimate a speed of sound based on the acoustic ranging receiver signal.

公开(公告)号：US10856064B2

公开(公告)日：2020-12-01

申请号：US16397953

申请日：2019-04-29

Applicant: AVNERA CORPORATION

Inventor： Michael Jon Wurtz ,  Amit Kumar ,  Jiajin An

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

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.

公开(公告)号：US20200014996A1

公开(公告)日：2020-01-09

申请号：US16505554

申请日：2019-07-08

Applicant: Avnera Corporation

Inventor： Deepika Kumari ,  Colin Michael Doolittle ,  Amit Kumar

IPC: H04R1/10 ,  H04R3/04 ,  G10L25/21 ,  H04R29/00 ,  H04R1/40 ,  H04R3/00

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 is 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.