公开(公告)号：US10945062B2

公开(公告)日：2021-03-09

申请号：US16274075

申请日：2019-02-12

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Eric Sorensen ,  Shankar Rathoud

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

Abstract: A headphone having a speaker, a feedforward microphone, a feedback microphone, and an OED processor. The speaker is configured to transmit an audio playback signal based on a headphone audio signal. The feedforward microphone is configured to sense an ambient noise signal and transmit a feedforward microphone signal based at least in part on the ambient noise signal. The feedback microphone is configured to sense a total audio signal and transmit a feedback microphone signal based at least in part on the total audio signal, in which the total audio signal is the sum of the audio playback signal and at least a portion of the ambient noise level. The OED processor is configured to determine whether the headphone is off ear or on ear, based at least in part on the headphone audio signal, the feedforward microphone signal, and the feedback microphone signal.

公开(公告)号：US20190335263A1

公开(公告)日：2019-10-31

申请号：US16398043

申请日：2019-04-29

Applicant: AVNERA CORPORATION

Inventor： Michael Jon Wurtz ,  Amit Kumar ,  Jiajin An

IPC: H04R1/10 ,  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 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：US10448140B2

公开(公告)日：2019-10-15

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

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.

公开(公告)号：US10425053B2

公开(公告)日：2019-09-24

申请号：US15858101

申请日：2017-12-29

Applicant: Avnera Corporation

Inventor： Garry N. Link ,  Eric King ,  Xudong Zhao ,  Wai Lee ,  Alexander C. Stange ,  Amit Kumar

IPC: H03G3/00 ,  H03G3/32 ,  H03F1/02 ,  H03F1/30 ,  H03F3/187

Abstract: A Class G amplifier system including a processing unit configured to receive an input signal and output a delayed processed input signal, a class G amplifier configured to receive the delayed processed input signal, and a power supply. The power supply includes a regulator configured to operate in a plurality of configurations, each configuration outputs a different supply voltage to the class G amplifier and a control circuit configured to receive the input signal and determine the supply voltage required from the regulator when the delayed processed input signal is received at the class G amplifier, and output a signal to the regulator to indicate the required configuration for the required supply voltage.

公开(公告)号：US20190259369A1

公开(公告)日：2019-08-22

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).

公开(公告)号：US20190207575A1

公开(公告)日：2019-07-04

申请号：US16295987

申请日：2019-03-07

Applicant: Avnera Corporation

Inventor： Garry N. Link ,  Eric King ,  Xudong Zhao ,  Wai Lee ,  Alexander C. Stange ,  Amit Kumar

IPC: H03G3/00 ,  H03F1/30 ,  H03F1/02 ,  H03G3/32 ,  H03F3/187

CPC classification number: H03G3/004 ,  H03F1/025 ,  H03F1/305 ,  H03F3/187 ,  H03F2200/507 ,  H03F2200/511 ,  H03G3/32

Abstract: A Class G amplifier system including a processing unit configured to receive an input signal and output a delayed processed input signal, a class G amplifier configured to receive the delayed processed input signal, and a power supply. The power supply includes a regulator configured to operate in a plurality of configurations, each configuration outputs a different supply voltage to the class G amplifier and a control circuit configured to receive the input signal and determine the supply voltage required from the regulator when the delayed processed input signal is received at the class G amplifier, and output a signal to the regulator to indicate the required configuration for the required supply voltage.

公开(公告)号：US10230343B2

公开(公告)日：2019-03-12

申请号：US15858101

申请日：2017-12-29

Applicant: Avnera Corporation

Inventor： Garry N. Link ,  Eric King ,  Xudong Zhao ,  Wai Lee ,  Alexander C. Stange ,  Amit Kumar

IPC: H03G3/00 ,  H03G3/32 ,  H03F1/02 ,  H03F1/30 ,  H03F3/187

Abstract: A Class G amplifier system including a processing unit configured to receive an input signal and output a delayed processed input signal, a class G amplifier configured to receive the delayed processed input signal, and a power supply. The power supply includes a regulator configured to operate in a plurality of configurations, each configuration outputs a different supply voltage to the class G amplifier and a control circuit configured to receive the input signal and determine the supply voltage required from the regulator when the delayed processed input signal is received at the class G amplifier, and output a signal to the regulator to indicate the required configuration for the required supply voltage.

公开(公告)号：US20190019491A1

公开(公告)日：2019-01-17

申请号：US16101192

申请日：2018-08-10

Applicant: Avnera Corporation

Inventor： Amit Kumar ,  Thomas Irrgang ,  Shankar Rathoud ,  Eric Sorensen

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

CPC classification number: G10K11/178 ,  G10K11/17813 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3025 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3045 ,  G10K2210/3055 ,  G10K2210/3056 ,  G10K2210/3214 ,  G10K2210/504 ,  H04R1/1083 ,  H04R29/00 ,  H04R2460/01

Abstract: A fixture for calibrating an active noise canceling (ANC) earphone, the calibration fixture including an ear model and an acoustic path. The ear model is configured to support an ANC earphone and includes an ear canal extending from an outer end of the ear canal to an inner end of the ear canal. The acoustic path is external to the ear canal and extends from, at a first end of the acoustic path, the inner end of the ear canal of the ear model to an opposite, second end of the acoustic path. The acoustic path is configured to transmit a mechanical sound wave received from the inner end of the ear canal to a region external to the ear model and adjacent the outer end of the ear canal.

公开(公告)号：US20180270564A1

公开(公告)日：2018-09-20

申请号：US15984068

申请日：2018-05-18

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.

公开(公告)号：US20180261199A1

公开(公告)日：2018-09-13

申请号：US15916885

申请日：2018-03-09

Applicant: Avnera Corporation

Inventor： Amit Kumar

IPC: G10K11/175

CPC classification number: G10K11/175 ,  G10K11/17823 ,  G10K11/17827 ,  G10K11/17837 ,  G10K11/17854 ,  G10K11/17855 ,  G10K11/17875 ,  G10K2210/1081 ,  G10K2210/12 ,  G10K2210/128 ,  G10K2210/3011 ,  G10K2210/3017 ,  G10K2210/3026 ,  G10K2210/3028 ,  G10K2210/3031 ,  G10K2210/3039 ,  G10K2210/3055

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).