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公开(公告)号：US11614916B2
公开(公告)日：2023-03-28
申请号：US16730134
申请日：2019-12-30
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 , G10K11/178 , H04R5/033 , G06F1/3206 , G06F1/3287
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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公开(公告)号：US20220312104A1
公开(公告)日：2022-09-29
申请号：US17806295
申请日：2022-06-10
Applicant: AVNERA CORPORATION
Inventor： Michael Jon Wurtz , Amit Kumar , Jiajin An
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.
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公开(公告)号：US11006201B2
公开(公告)日：2021-05-11
申请号：US16588108
申请日：2019-09-30
Applicant: Avnera Corporation
Inventor： Amit Kumar , Shankar Rathoud , Michael Jon Wurtz , Eric Etheridge , Eric Sorensen
IPC: H04R1/10 , H04R29/00 , G10K11/178 , 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 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.
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公开(公告)号：US10516960B2
公开(公告)日：2019-12-24
申请号：US16013073
申请日：2018-06-20
Applicant: Avnera Corporation
Inventor： Colin Doolittle , Amit Kumar , David Wurtz , Michael Wurtz , Manpreet Khaira , Meenakshi Barjatia
Abstract: An audio speaker system for a home theater including a number of microphones, a number of speakers, each speaker located at a different location in a room, and a processor electrically connected to the plurality of microphones and wirelessly connected to the plurality of speakers. The processor is configured to generate an audio signal to send to each speaker of the plurality of speakers, output audio from each speaker of the plurality of speakers based on the audio signal, receive the audio at each microphone from each speaker of the plurality of speakers, determine a location of each speaker relative to the plurality of microphones based on the received audio at each microphone, and assign an audio channel to each speaker based on the determined location.
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公开(公告)号：US20190182578A1
公开(公告)日：2019-06-13
申请号：US16274075
申请日：2019-02-12
Applicant: Avnera Corporation
Inventor： Amit Kumar , Eric Sorensen , Shankar Rathoud
IPC: 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.
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Patent Agency Ranking
公开(公告)号：US20190043469A1
公开(公告)日：2019-02-07
申请号：US16154526
申请日：2018-10-08
Applicant: Avnera Corporation
Inventor： Amit Kumar , Wai Lang Lee , Jianping Wen
IPC: G10K11/178
Abstract: A method of adaptive noise cancellation can include receiving an audio input signal, receiving an ambient signal through a microphone, modifying filter parameters of a noise filter based on the ambient signal, and filtering the audio input signal based on the modified filter parameters.
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公开(公告)号：US10200776B2
公开(公告)日：2019-02-05
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 , G10K11/178 , H04R3/00 , H04R29/00
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 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.
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公开(公告)号：US20180198430A1
公开(公告)日：2018-07-12
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
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.
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公开(公告)号：US09728179B2
公开(公告)日：2017-08-08
申请号：US14885876
申请日：2015-10-16
Applicant: AVNERA CORPORATION
Inventor： Amit Kumar , Thomas Irrgang , Shankar Rathoud , Eric Sorensen
IPC: G10K11/178
CPC classification number: G10K11/178 , G10K11/17813 , G10K11/1788 , 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 method of calibrating an earphone may include: securing an ANC earphone to a calibration fixture, the calibration fixture including an ear model configured to support the ANC earphone, the ear model having an ear canal configured to anatomically resemble a human ear canal and a concha configured to anatomically resemble a human ear concha, the ear canal extending from the concha to an inner end of the ear canal; generating, with the ANC earphone, an audio signal based on a reference tone; determining a characteristic of the audio signal; comparing the characteristic of the audio signal to a previously determined reference characteristic; and adjusting a gain value of the ANC earphone based on the comparing. Additional methods and apparatus are also disclosed.
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公开(公告)号：US11032631B2
公开(公告)日：2021-06-08
申请号：US16505554
申请日：2019-07-08
Applicant: Avnera Corporation
Inventor： Deepika Kumari , Colin Michael Doolittle , Amit Kumar
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.
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