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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.
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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.
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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
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：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.
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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
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.
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Patent Agency Ranking
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.
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公开(公告)号：US20200348901A1
公开(公告)日：2020-11-05
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: 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：US20200228076A1
公开(公告)日：2020-07-16
申请号：US16648621
申请日：2018-09-20
Applicant: Avnera Corporation
Inventor： Wai Laing Lee
Abstract: An amplifier for headphones including a current digital-to-analog converter (DAC) configured to output a current based on a digital audio input signal, an output electrically connected to a speaker and configured to output an output signal to the speaker, and a pulse width modulation (PWM) loop configured to receive an error signal, the error signal based on a difference between the current from the current DAC and a current of the output signal, and generate the output signal based on the error signal. The PWM loop includes an analog-to-digital converter (ADC) configured to receive an analog signal based on the current from the current DAC and output a digital signal representing the analog signal, and an encoder configured to receive the digital signal and output a pulse having a width based on the analog signal.
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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
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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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
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.
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