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    Interface for expanding the dynamic interval of an input signal of an acoustic transducer
    1.
    发明授权
    Interface for expanding the dynamic interval of an input signal of an acoustic transducer 有权
    用于扩展声换能器的输入信号的动态间隔的接口

    公开(公告)号：US09565506B2

    公开(公告)日：2017-02-07

    申请号：US14532960

    申请日：2014-11-04

    Applicant: STMICROELECTRONICS S.R.L.

    Inventor： Marco Veneri ,  Alessandro Morcelli

    IPC: H04R29/00 ,  H04R3/00

    CPC classification number: H04R29/004 ,  H04R3/00 ,  H04R3/005 ,  H04R29/005

    Abstract: An interface for expanding a signal starting from a first sensing signal and a second sensing signal, wherein a receiving intensity measuring element generates an intensity signal; and a selector is controlled to select each time the first sensing signal, the second sensing signal, or a combined signal deriving from a weighted combination of these signals. The selector uses a plurality of thresholds variable as a function of the intensity signal.

    Abstract translation: 一种用于从第一感测信号和第二感测信号开始扩展信号的接口，其中接收强度测量元件产生强度信号; 并且控制选择器以每次选择第一感测信号，第二感测信号或从这些信号的加权组合导出的组合信号。 选择器使用多个阈值作为强度信号的函数而变化。

    Interface electronic circuit for a microelectromechanical acoustic transducer and corresponding method
    2.
    发明授权
    Interface electronic circuit for a microelectromechanical acoustic transducer and corresponding method 有权

    公开(公告)号：US10965262B2

    公开(公告)日：2021-03-30

    申请号：US16378872

    申请日：2019-04-09

    Applicant: STMicroelectronics S.r.l.

    Inventor： Alberto Danioni ,  Alessandro Morcelli

    IPC: H03F13/00 ,  H03F3/70 ,  H04R19/04

    Abstract: In at least one embodiment, an interface electronic circuit for a capacitive acoustic transducer having a sensing capacitor is provided. The interface electronic circuit includes an amplifier, a voltage regulator, a common-mode control circuit, and a reference generator. The amplifier has an input coupled to an electrode of the sensing capacitor. The voltage regulator is configured to receive a regulator reference voltage, generate a regulated voltage based on the regulator reference voltage, and supply the regulated voltage to a supply input of the amplifier. The common-mode control circuit controls a common-mode voltage present on the input of the amplifier based on a common-mode reference voltage. The reference generator receives a supply voltage and generates the regulator reference voltage and the common-mode reference voltage with respective values that are variable as a function of the supply voltage.

    MICRO-ELECTRO-MECHANICAL ACOUSTIC TRANSDUCER DEVICE WITH IMPROVED DETECTION FEATURES AND CORRESPONDING ELECTRONIC APPARATUS
    6.
    发明申请
    MICRO-ELECTRO-MECHANICAL ACOUSTIC TRANSDUCER DEVICE WITH IMPROVED DETECTION FEATURES AND CORRESPONDING ELECTRONIC APPARATUS 有权
    具有改进的检测特性和对应电子设备的微机电声传感器装置

    公开(公告)号：US20150131820A1

    公开(公告)日：2015-05-14

    申请号：US14532951

    申请日：2014-11-04

    Applicant: STMICROELECTRONICS S.R.L.

    Inventor： Marco Veneri ,  Alessandro Morcelli

    IPC: H04R23/00

    CPC classification number: H04R23/00 ,  G10L25/78 ,  H04R1/04 ,  H04R3/00 ,  H04R3/06 ,  H04R19/005 ,  H04R19/04 ,  H04R23/006 ,  H04R2201/003

    Abstract: Described herein is a MEMS acoustic transducer device provided with a micromechanical detection structure that detects acoustic-pressure waves and supplies a transduced electrical quantity, and with an integrated circuit operatively coupled to the micromechanical detection structure and having a reading module that generates at output an audio signal as a function of the transduced electrical quantity. The integrated circuit is further provided with a recognition module, which recognizes a of sound activity event associated to the transduced electrical quantity. The MEMS acoustic transducer has an output that supplies at output a data signal that carries information regarding recognition of the sound activity event.

    Abstract translation: 这里描述的是一种MEMS声学换能器装置，其具有检测声压波并提供转换电量的微机械检测结构，以及可操作地耦合到微机械检测结构并具有读取模块的集成电路，该读取模块在输出端产生音频 信号作为转换电量的函数。 集成电路还设置有识别模块，其识别与转换的电量相关联的声音活动事件。 MEMS声换能器具有输出，其在输出端提供载有关于声音活动事件识别的信息的数据信号。

    IMAGE DISPLAY SYSTEM FOR CALIBRATING A SOUND PROJECTOR
    7.
    发明申请
    IMAGE DISPLAY SYSTEM FOR CALIBRATING A SOUND PROJECTOR 有权
    用于校准声音投影仪的图像显示系统

    公开(公告)号：US20130300843A1

    公开(公告)日：2013-11-14

    申请号：US13891000

    申请日：2013-05-09

    Applicant: STMICROELECTRONICS S.R.L.

    Inventor： Alessandro Morcelli ,  Andrea Mario Onetti ,  Marco Angelici

    IPC: H04N5/60 ,  H04N13/04

    CPC classification number: H04N5/60 ,  G02C11/10 ,  H04N13/337 ,  H04N21/4122 ,  H04N21/42203 ,  H04N21/43637 ,  H04N21/439 ,  H04N21/816 ,  H04R2205/022 ,  H04S7/301 ,  H04S7/303

    Abstract: The present disclosure relates to an image display system, including a television having a screen, a sound projector, a control unit in signal communication with said screen and said sound projector, said control unit being configured for said sound projector to project one or more audible beams in a room towards one or more target paths. The system includes an optical instrument having a frame and a pair of lenses, detection means and transmission means, said detection means being designed to receive at their input an audio signal having a frequency falling in a 20-20 kHz frequency band and to output a processed signal, said transmission means being designed to receive at their input said processed signal, and to output a calibration signal. The control unit calibrates said sound projector according to said calibration signal generated by said optical instrument.

    Abstract translation: 本公开涉及一种图像显示系统，包括具有屏幕的电视机，声音投影仪，与所述屏幕和所述声音投影仪进行信号通信的控制单元，所述控制单元被配置用于所述声音投影仪投影一个或多个可听见的 在朝向一个或多个目标路径的房间中的梁。 该系统包括具有框架和一对透镜，检测装置和传输装置的光学仪器，所述检测装置被设计为在其输入端接收具有落在20-20kHz频带中的频率的音频信号，并输出 所述传输装置被设计成在其输入端接收所述经处理的信号，并输出校准信号。 控制单元根据由所述光学仪器产生的所述校准信号校准所述声音投影仪。

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