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：US10261537B2

公开(公告)日：2019-04-16

申请号：US15955620

申请日：2018-04-17

Applicant: AVNERA CORPORATION

Inventor： Christopher D. Nilson

IPC: G05F1/46 ,  G05F3/16 ,  H03K17/687

Abstract: A start-up circuit for a bandgap reference voltage generator circuit, including a first native transistor with a drain connected to a supply voltage of the bandgap reference voltage generator circuit and a source connected to a gate of the first native transistor; a low voltage transistor with a source connected to ground, a drain connected to the source of the first native transistor, and a gate connected to a resistor; a second native transistor with a source connected to the resistor, a gate connected to the source of the first native transistor; a high voltage transistor with a drain connected to a drain of the second native transistor and a source connected to the supply voltage; and a transistor with a gate connected to the gate of the first high voltage transistor and a drain which provides a start-up current for the bandgap reference voltage generator circuit.

公开(公告)号：US10182160B2

公开(公告)日：2019-01-15

申请号：US15354909

申请日：2016-11-17

Applicant: AVNERA CORPORATION

Inventor： Eric Sorensen ,  Thomas Irrgang ,  Mike Wurtz

IPC: H04M9/08 ,  H04M1/60 ,  H04M1/62 ,  H04M1/725

Abstract: A portable speakerphone having a housing, a receiving transducer, an electrical cable, a transmitting transducer, and a processor. The receiving transducer is affixed to the housing and is configured to receive a first electrical signal from a mobile device. The electrical cable is coupled to and extends from the housing. The transmitting transducer is affixed to the electrical cable, remote from the housing. Also, the transmitting transducer is configured to transmit a second electrical signal, and the second electrical signal is based in part on the first electrical signal. The processor is configured to suppress acoustic echo by modifying the second electrical signal. The processor is also configured to output the modified second electrical signal to the mobile device. A related method is also disclosed.

公开(公告)号：US10177779B2

公开(公告)日：2019-01-08

申请号：US15849227

申请日：2017-12-20

Applicant: Avnera Corporation

Inventor： Wai Lee ,  Garry N. Link ,  Jianping Wen

IPC: H03M1/12 ,  H03M1/46 ,  H03M1/44 ,  H03M1/06 ,  H03M1/08

Abstract: The disclosure includes an analog to digital converter (ADC). The ADC includes a comparator to compare sample values of an analog signal in an analog domain to reference values to determine digital values in a digital domain. The digital values correspond to the analog signal and may be determined according to successive approximation. The ADC also includes chop switches to modulate the analog signal to increase a frequency of flicker noise in the analog domain. The ADC also includes an un-chop switch to demodulate the digital values in the digital domain prior filtration of the flicker noise by a digital filter.

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.