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.

公开(公告)号：WO2021144400A1

公开(公告)日：2021-07-22

申请号：PCT/EP2021/050766

申请日：2021-01-15

Applicant: HAHN-SCHICKARD-GESELLSCHAFT FÜR ANGEWANDTE FORSCHUNG E. V.

Inventor： DEHÉ, Alfons ,  BITTNER, Achim ,  CASTELLANOS, Lenny

IPC: H04R17/00 ,  H04R7/14 ,  H04R17/005 ,  H04R17/10 ,  H04R2201/003

Abstract: Die Erfindung betrifft einen MEMS- Wandler, welcher eine schwingfähige Membran (1) zur Erzeugung oder Aufnahme von Druckwellen eines Fluids in einer vertikalen Richtung umfasst, wobei die schwingfähige Membran (1) von einem Träger (4) gehalten wird und die schwingfähige Membran (1) zwei oder mehr vertikale Abschnitte (2) aufweist, welche parallel zur vertikalen Richtung ausgebildet sind und mindestens eine Lage aus einem Aktuatormaterial (11) umfassen. Die schwingfähige Membran (1) liegt endseitig mit einer Elektrode (13) kontaktiert vor, sodass durch Ansteuerung der mindestens einer Elektrode (13) die zwei oder mehr vertikalen Abschnitte (2) zu horizontalen Schwingungen angeregt werden können oder sodass bei Anregung der zwei oder mehr vertikalen Abschnitte (2) zu horizontalen Schwingungen an der mindestens einen Elektrode (13) ein elektrisches Signal erzeugt werden kann.

公开(公告)号：WO2021041275A8

公开(公告)日：2021-03-04

申请号：PCT/US2020/047547

申请日：2020-08-22

Applicant: SHURE ACQUISITION HOLDINGS, INC.

Inventor： SHUMARD, Brent Robert ,  GILBERT, Mark ,  PESSIN, James Michael ,  WIGLEY, Emily Ann

IPC: H04R1/40 ,  G10L2021/02166 ,  H04R1/245 ,  H04R1/406 ,  H04R19/04 ,  H04R2201/003 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2201/405 ,  H04R3/005

Abstract: Embodiments include an array microphone comprising a plurality of microphone sets arranged in a linear pattern relative to a first axis and configured to cover a plurality of frequency bands. Each microphone set comprises a first microphone arranged along the first axis and a second microphone arranged along a second axis orthogonal to the first microphone, wherein a distance between adjacent microphones along the first axis is selected from a first group consisting of whole number multiples of a first value, and within each element, a distance between the first and second microphones along the second axis is selected from a second group consisting of whole number multiples of a second value.

公开(公告)号：WO2021253498A1

公开(公告)日：2021-12-23

申请号：PCT/CN2020/099407

申请日：2020-06-30

Applicant: 歌尔微电子有限公司

Inventor： 邹泉波 ,  党茂强 ,  王德信

IPC: H04R19/04 ,  H04R2201/003

Abstract: 本说明书实施例提供电容型微机电系统麦克风、麦克风单体及电子设备。该电容型微机电系统麦克风包括：背极板；振膜；以及间隔件，用于使得所述背极板和振膜间隔开，其中，在施加工作偏压的状态下，所述振膜相对于平整位置的静态有效位移与振膜的厚度的比值大于或等于0.5。

公开(公告)号：WO2021195181A1

公开(公告)日：2021-09-30

申请号：PCT/US2021/023837

申请日：2021-03-24

Applicant: EXPENSIFY, INC.

Inventor： BARRETT, David M. ,  CHEN, Robert

IPC: H04B5/00 ,  H04R1/00 ,  H04W4/80 ,  H04W88/06 ,  G10L15/22 ,  G10L2015/223 ,  H04R1/08 ,  H04R1/1058 ,  H04R1/14 ,  H04R19/04 ,  H04R2201/003 ,  H04R2460/13

Abstract: An interactive system can utilize microtechnology (e.g., a micro-electromechanical system (MEMS)), such as miniaturized microphone (e.g., a bone-conducting microphone), audio output device, microprocessor, and signal conversion and propagation means to create a personal area network (PAN) for a user. The system can include a voice input device (e.g., worn on one or more teeth of the user) that outputs a near-field magnetic induction (NFMI) signal based on a whisper input by the user. The NFMI signal is either detected by the user's mobile device, or converted into a wireless signal (e.g., a Bluetooth RF signal) detectable by the user's mobile device, for receiving voice commands (e.g., to provide personal assistant services) via a designated application running on the mobile device.

公开(公告)号：WO2021191086A1

公开(公告)日：2021-09-30

申请号：PCT/EP2021/057134

申请日：2021-03-19

Applicant: AMS INTERNATIONAL AG

Inventor： STOJANOVIC, Goran ,  HOFRICHTER, Jens ,  STOCKMEIER, Thomas

IPC: H04R1/24 ,  H04R1/28 ,  H04R1/40 ,  H04R23/00 ,  H04R31/00 ,  B81B3/00 ,  H04M1/60 ,  H04M1/0266 ,  H04M1/03 ,  H04M1/6008 ,  H04R1/245 ,  H04R1/2892 ,  H04R1/406 ,  H04R2201/003 ,  H04R23/008 ,  H04R2499/11 ,  H04R2499/15 ,  H04R31/006

Abstract: An apparatus (34) for sound detection, sound localization and beam forming comprises a display (1) and a plurality of microphone stacks (3), wherein the display (1) surrounds each microphone stack (3) in lateral directions (x, y). The apparatus (34) further comprises a plurality of elastic connectors (7), wherein each elastic connector (7) surrounds one respective microphone stack (3) in lateral directions (x, y) and mechanically connects the respective microphone stack (3) with the display (1). Each microphone stack (3) further comprises a microelectromechanical transducer array (5), the transducer array (5) comprising a plurality of membranes (14), in particular nano-membranes, and corresponding integrated back-volumes (17), the back-volumes (17) being arranged under the membranes (14). An optical reading device (6) is configured to separately detect the displacement of each membrane (14).

公开(公告)号：WO2021145769A1

公开(公告)日：2021-07-22

申请号：PCT/NL2021/050026

申请日：2021-01-18

Applicant: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETENSCHAPPELIJK ONDERZOEK TNO

Inventor： VAN NEER, Paul Louis Maria Joseph ,  HARMSMA, Peter Johan ,  PIRAS, Daniele ,  ALTMANN, Robert Karl ,  VAN DER HEIDEN, Maurits Sebastiaan

IPC: H04R1/40 ,  H04R3/00 ,  H04R1/34 ,  H04R23/00 ,  H04R17/02 ,  H04R1/342 ,  H04R1/406 ,  H04R2201/003 ,  H04R2201/401 ,  H04R2201/403 ,  H04R23/008 ,  H04R2410/03 ,  H04R3/005

Abstract: The sound detection device comprises a substrate, an array of sound detectors in or on a surface of the substrate, a processing circuit coupled to the sound detectors, the processing circuit being configured to sum signals from the sound detectors with relative time delays or phase shifts that compensate for propagation delay of sound along the array in a sound propagation mode that is bound to said surface. In an embodiment the sound in said sound propagation mode is bound to the surface using an acoustic waveguide, wherein the surface of the substrate forms a part of the acoustic waveguide, the sound detection device comprising a wall facing the array of sound detectors, with a space between the surface of the substrate and the wall, the sound detection device comprising an opening that provides incoming sound from outside the device access to said space, for excitation of the wave in the bound propagation mode in the acoustic waveguide by sound from outside the device.

公开(公告)号：WO2022240878A1

公开(公告)日：2022-11-17

申请号：PCT/US2022/028596

申请日：2022-05-10

Applicant: VESPER TECHNOLOGIES INC.

Inventor： CARFORE, Michael ,  SARAF, Tomer

IPC: H04R3/02 ,  H04R3/04 ,  H04R3/06 ,  H04R3/08 ,  H04R19/04 ,  H01L41/1132 ,  H04R2201/003 ,  H04R3/002 ,  H04R3/007

Abstract: Illustrative embodiments enable a MEMS transducer to quickly recover from, acoustic overload events by quickly resetting signal processing circuitry downstream from a MEMS transducer. An acoustic overload sensor detects occurrence of an acoustic overload event, and triggers a reset circuit to operate a set of switches to rapidly drain charge from a corresponding set of capacitances within the transducer, or within the signal processing circuitry, thereby resetting the signal processing circuitry more rapidly than would occur if said transducer or circuitry were allowed to recover on its own.

公开(公告)号：WO2022212608A1

公开(公告)日：2022-10-06

申请号：PCT/US2022/022690

申请日：2022-03-30

Applicant: AMS INTERNATIONAL AG ,  STOJANOVIC, Goran ,  SEURIN, Jean, Francois ,  XU, Guoyang ,  GUO, Baiming ,  WANG, Haisong ,  NEVOU, Laurent

Inventor： STOJANOVIC, Goran ,  SEURIN, Jean, Francois ,  XU, Guoyang ,  GUO, Baiming ,  WANG, Haisong ,  NEVOU, Laurent

IPC: G01L7/08 ,  G01L9/00 ,  G01L23/06 ,  H04R23/00 ,  G01L7/086 ,  G01L9/0017 ,  H04R2201/003 ,  H04R23/008 ,  H04R2307/027

Abstract: A displacement detector comprises a substrate (SUB) and a membrane (MEM) having an inner surface (INS) facing the substrate. A mounting area (MA) is arranged to fix the membrane along at least part of the perimeter (PER) of the membrane, wherein the mounting area, the inner surface and the substrate enclose a back volume (VOL). An acoustic compliance of the back volume is arranged to be the same or larger than an acoustic compliance of the membrane. An optical sensor is operable to generate a sensor signal indicative of a displacement of the membrane.

公开(公告)号：WO2021258464A1

公开(公告)日：2021-12-30

申请号：PCT/CN2020/103189

申请日：2020-07-21

Applicant: 瑞声声学科技（深圳）有限公司 ,  瑞声科技（南京）有限公司

Inventor： 但强 ,  程诗阳 ,  朱国 ,  李杨

IPC: H04R19/04 ,  H04R19/02 ,  H04R2201/003 ,  H04R2400/11

Abstract: 一种换能器（10），包括：第一壳体（100）、第二壳体（200）、连接件（300）、环形件（400）、第一电容结构（600）及第二电容结构（800），环形件（400）与第一壳体（100）及第二壳体（200）围成内腔，第一壳体（100）及第二壳体（200）呈圆形，连接件（300）将内腔分隔形成第一声腔(510)与第二声腔(520)，环形件(400)包括形变臂(410)及环形本体(450)，对第一电容结构（600）及第二电容结构（800）通电致使形变臂（410）变形以改变第一声腔（510）和第二声腔（520）的体积，产生声压，并从导声孔（110）导出，或者当声压从导声孔（110）进入第一声腔（510）和第二声腔（520）中，形变臂（410）被推动变形从而导致第一电容结构（600）、第二电容结构（800）输出电信号的变化。这一换能器的环形件（400）设置于内腔的外侧，具有较大空间以实现形变臂（410）的变形控制，可有效提高形变臂（410）的变形及环形本体（450）旋转运动的线性度，从而有效提升环形件（400）的控制效果。