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    MICRO ELECTROSTATIC SPEAKER
    2.
    发明申请
    MICRO ELECTROSTATIC SPEAKER 有权

    公开(公告)号：US20220248146A1

    公开(公告)日：2022-08-04

    申请号：US17607904

    申请日：2020-04-30

    Applicant: Waves Audio Ltd.

    Inventor： Gabriel Zeltzer ,  Meir Shaashua ,  Gavriel Speyer

    IPC: H04R19/02 ,  H04R7/04 ,  H04R7/18 ,  H04R31/00

    Abstract: An acoustic device including a membrane having an edge. A membrane support is attached to the edge of the membrane. A central region of the membrane is unsupported by the support. A first electrode and the membrane support are manufactured as a single element. The first electrode is disposed parallel to the membrane. The membrane is configured to respond acoustically to a varying first electric field emanating from the first electrode when a varying first voltage is applied to the first electrode. A coating is deposited on a surface of the first electrode facing the membrane.

    CONTROL OF AN ELECTROSTATIC ACOUSTIC DEVICE
    3.
    发明公开
    CONTROL OF AN ELECTROSTATIC ACOUSTIC DEVICE 审中-公开

    公开(公告)号：US20230171546A1

    公开(公告)日：2023-06-01

    申请号：US17925642

    申请日：2021-05-11

    Applicant: Waves Audio Ltd.

    Inventor： Gabriel Zeltzer ,  Meir Shaashua

    IPC: H04R3/06 ,  H04R7/04 ,  H04R19/02 ,  H04R29/00 ,  G10K11/178

    CPC classification number: H04R3/06 ,  H04R7/04 ,  H04R19/02 ,  H04R29/001 ,  G10K11/17827 ,  G10K11/17825 ,  H04R3/007

    Abstract: A control circuit for an electrostatic transducer including: an audio signal input, a detector configured to detect a current or charge signal from the electrostatic transducer. The detector is configured to produce an audio output signal varying at audio frequencies. A transform circuit is configured to transform the audio output signal to produce a feedback signal. A comparator is configured to compare an input audio signal at the audio signal input to the feedback signal to produce an error signal. A controller is configured to input a control signal to the electrostatic transducer, the control signal responsive to the error signal. The control signal is configured to control acoustic transparency of the electrostatic transducer, from outside space through through-holes of the first electrode, across the membrane and through through-holes of the second electrode.

    ELECTROSTATIC EARPHONE WITH ADJUSTABLE ACOUSTIC TRANSPARENCY
    4.
    发明申请
    ELECTROSTATIC EARPHONE WITH ADJUSTABLE ACOUSTIC TRANSPARENCY 有权

    公开(公告)号：US20220312105A1

    公开(公告)日：2022-09-29

    申请号：US17838220

    申请日：2022-06-12

    Applicant: Waves Audio Ltd.

    Inventor： Gabriel Zeltzer ,  Meir Shaashua

    IPC: H04R1/10 ,  H04R19/00 ,  H04R7/04 ,  H04R7/18 ,  H04R29/00

    Abstract: An electrostatic transducer including a membrane, a first electrode and a second electrode. The first electrode is disposed parallel to the membrane. The membrane is configured to respond mechanically to a varying first electric field in accordance with respective electric potentials applied between the first electrode and the membrane. The second electrode is disposed parallel to the membrane opposite from the first electrode. The membrane is configured to respond mechanically to a varying second electric field in accordance with respective electric potentials between the second electrode and the membrane. The first and second electrodes have through holes configured for acoustic transmission to and from the membrane. The housing includes: (i) a nozzle configured for acoustic transmission from the membrane through the holes of the first electrode to an ear canal and (ii) an aperture configured to provide acoustic transmission through the holes of the second electrode between the membrane and air external to the housing.

    SIMULTANEOUS DUAL USE OF AN ACOUSTIC DEVICE AS A LOUDSPEAKER AND MICROPHONE
    6.
    发明公开
    SIMULTANEOUS DUAL USE OF AN ACOUSTIC DEVICE AS A LOUDSPEAKER AND MICROPHONE 审中-公开

    公开(公告)号：US20240305930A1

    公开(公告)日：2024-09-12

    申请号：US18661743

    申请日：2024-05-13

    Applicant: Waves Audio Ltd.

    Inventor： Gabriel Zeltzer ,  Meir Shaashua

    IPC: H04R19/02 ,  H04R3/06 ,  H04R7/04 ,  H04R19/04

    CPC classification number: H04R19/02 ,  H04R3/06 ,  H04R7/04 ,  H04R19/04 ,  H04R2400/01

    Abstract: Operating an electrostatic acoustic device simultaneously as a speaker and as a microphone. The electrostatic acoustic device includes a membrane and an electrode disposed proximate to the membrane. An input varying audio signal is input to the electrostatic acoustic device. The membrane is configured to respond mechanically to a varying electric field responsive to the varying audio signal input. A portion of the input varying audio signal is tapped to produce a reference signal. A signal is detected responsive to motion of the membrane, to convert the signal to an output varying voltage signal. The output varying voltage signal is compared to the reference signal to produce a microphone signal. The microphone signal is responsive to motion of the membrane induced by air pressure variations of ambient sound.

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