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    User Voice Activity Detection Methods, Devices, Assemblies, and Components
    113.
    发明申请
    User Voice Activity Detection Methods, Devices, Assemblies, and Components 审中-公开

    公开(公告)号：US20180225082A1

    公开(公告)日：2018-08-09

    申请号：US15711793

    申请日：2017-09-21

    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 ,  H04R1/40 ,  H04R3/00 ,  G10L15/08 ,  G10L15/22

    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.

    SPDIF clock and data recovery with sample rate converter
    114.
    发明授权
    SPDIF clock and data recovery with sample rate converter 有权

    公开(公告)号：US10038548B2

    公开(公告)日：2018-07-31

    申请号：US15799473

    申请日：2017-10-31

    Applicant: AVNERA CORPORATION

    Inventor： Samuel J. Peters, II ,  Eric P. Etheridge ,  Victor Lee Hansen ,  Alexander C. Stange

    IPC: H04L7/033 ,  H04L7/00

    CPC classification number: H04L7/033 ,  G06F13/4295 ,  H04L7/0029 ,  H04L7/02

    Abstract: A system can include a digital oversampler configured to oversample an input data stream; a rate generator configured to select a frequency that is not less than an expected frequency of the input data stream; a rate generator clock of the rate generator configured to output a clock signal that has the selected frequency; a sample receiver configured to receive at least one sample of the input data stream from the digital oversampler; a sample counter configured to be incremented by each received sample responsive to a determination that the sample receiver has received at least one sample of the input data stream from the digital oversampler; a sample rate converter configured to accumulate samples from the sample receiver at the rate of a “toothless” clock signal, wherein the sample counter is configured to be decremented by the “toothless” clock signal at the selected frequency responsive to a determination that the sample receiver has not received at least one sample of the input data stream from the digital oversampler; and an AND gate configured to pass the “toothless” clock signal to the sample rate converter responsive to a determination that an output of the sample counter is greater than zero.

    Digitally calibrated successive approximation register analog-to-digital converter
    116.
    发明授权
    Digitally calibrated successive approximation register analog-to-digital converter 有权

    公开(公告)号：US09831887B2

    公开(公告)日：2017-11-28

    申请号：US15391573

    申请日：2016-12-27

    Applicant: Avnera Corporation

    Inventor： Jianping Wen ,  Garry Link ,  Wai Lee

    IPC: H03M1/10 ,  H03M1/38

    CPC classification number: H03M1/1009 ,  H03M1/0682 ,  H03M1/0692 ,  H03M1/38 ,  H03M1/403 ,  H03M1/462 ,  H03M1/468 ,  H03M1/804

    Abstract: A circuit can include a voltage comparator Vd having a first input, a second input, and an output; a first plurality of capacitors Cp[0:n] that each have a top plate and a bottom plate, wherein each top plate is electrically coupled with the first input of the voltage comparator Vd, wherein each top plate is also switchably electrically coupled with a common mode voltage Vcm, and wherein each bottom plate is switchably electrically coupled between a first input voltage Vinp, a reference voltage Vref, the common mode voltage Vcm, and ground; a second plurality of capacitors Cn[0:n] that each have a top plate and a bottom plate, wherein each top plate is electrically coupled with the second input of the voltage comparator Vd, wherein each top plate is also switchably electrically coupled with the common mode voltage Vcm, and wherein each bottom plate is switchably electrically coupled between a second input voltage Vinn, the reference voltage Vref, the common mode voltage Vcm, and ground; and a successive approximation register (SAR) controller coupled with the output of the voltage comparator Vd.

    Ring network of Bluetooth speakers
    119.
    发明授权
    Ring network of Bluetooth speakers 有权

    公开(公告)号：US09699560B2

    公开(公告)日：2017-07-04

    申请号：US15365795

    申请日：2016-11-30

    Applicant: Avnera Corporation

    Inventor： Theodore Hetke ,  John Speth

    IPC: H04R3/12 ,  H04W4/00

    CPC classification number: H04R3/12 ,  H04R2420/07 ,  H04R2420/09 ,  H04R2430/01 ,  H04W4/80

    Abstract: A method for forming a complete ring network of a plurality of Bluetooth® speakers, the method including populating a configurable speaker register of each of the plurality of Bluetooth® speakers with an address of an upstream Bluetooth® speaker that is in the plurality of Bluetooth® speakers, populating the configurable speaker register of each of the plurality of Bluetooth® speakers with an address of a downstream Bluetooth® speaker that is in the plurality of Bluetooth® speakers, and coupling an audio source to one Bluetooth® speaker of the plurality of Bluetooth® speakers.

    SPEAKERPHONE SYSTEM OR SPEAKERPHONE ACCESSORY WITH ON-CABLE MICROPHONE
    120.
    发明申请
    SPEAKERPHONE SYSTEM OR SPEAKERPHONE ACCESSORY WITH ON-CABLE MICROPHONE 审中-公开

    公开(公告)号：US20170142262A1

    公开(公告)日：2017-05-18

    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

    CPC classification number: H04M9/082 ,  H04M1/6041 ,  H04M1/62 ,  H04M1/72527

    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.

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