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    OBJECT DETECTION SYSTEM
    6.
    发明公开
    OBJECT DETECTION SYSTEM 审中-公开

    公开(公告)号：US20230367007A1

    公开(公告)日：2023-11-16

    申请号：US18226290

    申请日：2023-07-26

    申请人： Murata Manufacturing Co., Ltd.

    发明人： Shinichi SASAKI ,  Takaaki ASADA

    IPC分类号： G01S15/10 ,  G01S7/527

    CPC分类号： G01S15/101 ,  G01S7/527

    摘要： An object detection system includes an acoustic wave generator to generate an acoustic wave by generating heat upon energization and a processing circuit to perform object detection processing to detect an object in target space using an acoustic wave generated by the acoustic wave generator. The object detection processing includes setting processing, wave transmission processing, and determination processing. The setting processing sets a search range corresponding to a distance to the object in the target space. The wave transmission processing controls the acoustic wave generator to generate an acoustic wave at a target sound pressure associated with a search range set in the setting processing. The determination processing acquires, from a wave receiver to receive an acoustic wave from the target space, a received-wave signal representing an acoustic wave received by the wave receiver and determines whether the object is present based on the received-wave signal.

    ACOUSTIC-ENVIRONMENT MISMATCH AND PROXIMITY DETECTION WITH A NOVEL SET OF ACOUSTIC RELATIVE FEATURES AND ADAPTIVE FILTERING
    7.
    发明公开
    ACOUSTIC-ENVIRONMENT MISMATCH AND PROXIMITY DETECTION WITH A NOVEL SET OF ACOUSTIC RELATIVE FEATURES AND ADAPTIVE FILTERING 审中-公开

    公开(公告)号：US20230296767A1

    公开(公告)日：2023-09-21

    申请号：US17695444

    申请日：2022-03-15

    申请人： NUANCE COMMUNICATIONS, INC.

    发明人： Francesco NESPOLI ,  Patrick NAYLOR ,  Daniel BARREDA

    IPC分类号： G01S15/10 ,  G01S7/527

    CPC分类号： G01S15/101 ,  G01S7/5273

    摘要： A method of performing distance estimation between a first recording device at a first location and a second recording device at a second location includes: estimating acoustic relative transfer function (RTF) between the first recording device and the second recording device for a sound signal, e.g., by applying an improved proportionate normalized least mean square (IPNLMS) filter; and estimating the distance between the first recording device and the second recording device based on the RTF. The at least one acoustic feature extracted from the RTF estimated between the first recording device and the second recording device includes at least one of clarity index, direct-to-reverberant ratio (DRR), and reverberation time. A distributed-gradient-boosting algorithm with regression trees is used in combination with signal-to-reverberation ratio (SRR) and the at least one acoustic feature extracted from the RTF to estimate the distance between the first recording device and the second recording device.

    Vehicle information directional transmission methods and devices
    9.
    发明授权
    Vehicle information directional transmission methods and devices 有权

    公开(公告)号：US11536816B2

    公开(公告)日：2022-12-27

    申请号：US16475110

    申请日：2019-01-07

    申请人： BOE TECHNOLOGY GROUP CO., LTD.

    发明人： Cheng Liu ,  Changlin Leng

    IPC分类号： G01S7/52 ,  B60Q5/00 ,  G01S7/527 ,  G01S15/10 ,  G10L15/22 ,  H04R1/40

    摘要： A system configured for vehicle communication includes a first smart apparatus associated with a first vehicle having a first horn and configured to acquire a first target information and a transmission direction information; a first horn control portion embedded in the first vehicle and configured to control the first horn in the first vehicle to send a first sound wave signal modulated by the first target information to a second vehicle based on the transmission direction information; and a second smart apparatus associated with the second vehicle and configured to receive the first sound wave signal and demodulate the first sound wave signal to obtain the first target information.