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    MICROPHONE HAVING A DIGITAL OUTPUT DETERMINED AT DIFFERENT POWER CONSUMPTION LEVELS
    12.
    发明申请
    MICROPHONE HAVING A DIGITAL OUTPUT DETERMINED AT DIFFERENT POWER CONSUMPTION LEVELS 审中-公开

    公开(公告)号：WO2020186265A1

    公开(公告)日：2020-09-17

    申请号：PCT/US2020/022973

    申请日：2020-03-16

    Applicant: VESPER TECHNOLOGIES INC.

    Inventor： LITTRELL, Robert J.

    IPC: G10L21/0216 ,  G10L15/28 ,  G10L15/22 ,  G10L25/51 ,  G10L21/0224 ,  G10L21/0208 ,  H04W52/02 ,  H04R17/02 ,  H04R3/00

    Abstract: An acoustic device is described and includes an acoustic sensor element configured to sense acoustic energy and produce an output signal and a threshold detector circuit including a switch having an input coupled to the output of the acoustic sensor element to receive the output signal, a control port that receives a control signal, and first and second output ports, a first channel including an analog-to-digital converter that operates at a first power level a second analog-to-digital converter that operates at a second higher power level, relative to the first power level and a threshold level detector that receives an output from the first analog-to-digital converter to produce the control signal having a first state that causes the switch feed the output signal from the acoustic sensor element to the second analog-to-digital converter when the first digitized output signal meets a threshold criteria.

    TRANSDUCER SYSTEM WITH THREE DECIBEL FEEDBACK LOOP
    14.
    发明申请
    TRANSDUCER SYSTEM WITH THREE DECIBEL FEEDBACK LOOP 审中-公开

    公开(公告)号：WO2021231642A1

    公开(公告)日：2021-11-18

    申请号：PCT/US2021/032081

    申请日：2021-05-12

    Applicant: VESPER TECHNOLOGIES, INC.

    Inventor： ASCHIERI, Julian

    IPC: H04R3/04 ,  H04R1/00 ,  H04R3/00 ,  H04R3/06 ,  H03F2200/03 ,  H03F3/183 ,  H04R17/02 ,  H04R19/04 ,  H04R2201/003 ,  H04R3/02

    Abstract: A transducer system has a transducer configured to receive an incident signal and produce an output signal as a function of the incident signal. As known in the art, the output signal has a -3dB point. The transducer system also has circuitry operatively coupled with the transducer. The circuitry includes an amplifier with an output configured to produce an amplified signal as a function of the output signal. In addition, the circuitry further has a positive feedback loop and a negative feedback loop that both are electrically coupled between the transducer and the amplifier. The positive feedback loop is configured to move the -3dB point in a first frequency direction. Conversely, the negative feedback loop is configured to move the -3dB point in a second frequency direction. Preferably, the first and second frequency directions are different.

    Acoustic transducer with gap-controlling geometry and method of manufacturing an acoustic transducer
    18.
    发明授权
    Acoustic transducer with gap-controlling geometry and method of manufacturing an acoustic transducer 有权

    公开(公告)号：US11259124B2

    公开(公告)日：2022-02-22

    申请号：US16353934

    申请日：2019-03-14

    Applicant: Vesper Technologies Inc.

    Inventor： Karl Grosh ,  Robert J. Littrell

    IPC: H04R17/02 ,  H04R31/00 ,  H04R7/06 ,  H01L41/27 ,  H01L41/314 ,  H01L41/332

    Abstract: A transducer of the preferred embodiment including a transducer and a plurality of adjacent, tapered cantilevered beams. Each of the beams define a beam base, a beam tip, and a beam body disposed between the beam base and the beam tip. The beams are arranged such that each of the beam tips extends toward a common area. Each beam is joined to the substrate along the beam base and is free from the substrate along the beam body. A preferred method of manufacturing a transducer can include: depositing alternating layers of piezoelectric and electrode onto the substrate in block, processing the deposited layers to define cantilever geometry in block, depositing metal traces in block, and releasing the cantilevered beams from the substrate in block.

    Transducer System with Configurable Acoustic Overload Point
    19.
    发明申请
    Transducer System with Configurable Acoustic Overload Point 有权

    公开(公告)号：US20210160623A1

    公开(公告)日：2021-05-27

    申请号：US17165998

    申请日：2021-02-03

    Applicant: Vesper Technologies, Inc.

    Inventor： Robert Littrell ,  Ronald Gagnon

    IPC: H04R19/04 ,  H04R3/00 ,  H04R17/02 ,  H04R1/04 ,  H04R19/00

    Abstract: A MEMS transducer system has a transducer configured to convert a received signal into an output signal for forwarding by a transducer output port, and an integrated circuit having an IC input in communication with the transducer output port. The IC input is configured to receive an IC input signal produced as a function of the output signal. The system also has a dividing element coupled between the IC input and the transducer output port. The dividing element is configured to selectively attenuate one or more signals into the IC input to at least in part produce the IC input signal. Other implementations may couple a feedback loop to the ground of the transducer (similar to bootstrapping), or pick off voltages at specific portions of the transducer.

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