Tunable slope equalizer
    12.
    发明授权

    公开(公告)号:US11784621B2

    公开(公告)日:2023-10-10

    申请号:US17509599

    申请日:2021-10-25

    摘要: A tunable slope equalizer comprising a waveguide (e.g., rectangular waveguide) and posts (e.g., cylindrical posts) configured to move inside the internal cavity of the waveguide is presented. The degree of depth the posts may be inserted into the cavity of the waveguide may determine the orientation of the frequency response slope, e.g., positive or negative, and the maximum (or approximately maximum) insertion loss at minimum (or approximately minimum) or maximum (or approximately maximum) operating frequency, respectively. Being a mechanical device, the tunable slope equalizer may be fabricated at a relatively higher level of precision, leading to lower variances in performance over production.

    VIRTUAL ENGINE SOUND GENERATION SYSTEM AND VIRTUAL ENGINE SOUND GENERATION METHOD

    公开(公告)号:US20230311756A1

    公开(公告)日:2023-10-05

    申请号:US18146415

    申请日:2022-12-26

    发明人: Jae Young LEE

    IPC分类号: B60Q5/00 G10K15/02 H03G5/16

    CPC分类号: B60Q5/008 G10K15/02 H03G5/165

    摘要: Provided are a virtual engine sound generation system and a virtual engine sound generation method using the same, and more particularly, a virtual engine sound generation system and a virtual engine sound generation method using the same capable of providing a virtual engine sound to which a sensation of gear shifting is added by calculating a virtual gear stage and a virtual RPM signal through a current vehicle speed and current APS information and generating a virtual engine sound based on the virtual gear stage and the virtual RPM signal.

    Wideband distributed gain equalization circuit

    公开(公告)号:US11716064B1

    公开(公告)日:2023-08-01

    申请号:US17142098

    申请日:2021-01-05

    摘要: Distributed gain equalization circuits for use with radio frequency (RF) devices are provided. The distributed gain equalization circuits include a substrate layer, multiple transverse electromagnetic (TEM) line circuits disposed on the substrate layer and multiple traces disposed on the substrate layer, each trace connected to one or more of the TEM line circuits. The traces and TEM line circuits are configured to provide resistances, inductances and capacitances to eliminate the need for lumped or packaged resistors, inductors and capacitors. The distributed gain equalization circuit operates at millimeter wave frequencies and provides a compensating gain slope to counteract a negative gain slope of the RF device. Methods of manufacturing distributed gain equalization circuits are also provided.

    Smart audio settings
    18.
    发明授权

    公开(公告)号:US11681495B2

    公开(公告)日:2023-06-20

    申请号:US17820741

    申请日:2022-08-18

    申请人: Sonos, Inc.

    发明人: Jonathan P. Lang

    摘要: Embodiments described herein provide for smart configuration of audio settings for a playback device. According to an embodiment, while a playback device is a part of a first zone group that includes the playback device and at least one first playback device, the playback device applies a first audio setting. The embodiment also includes the playback device joining a second zone group that includes the playback device and at least one second playback device. The embodiment further includes the playback device applying a second audio setting based on an audio content profile corresponding to the second zone group.

    METHODS FOR OPTIMIZING WORKING STATE OF BONE CONDUCTION EARPHONES

    公开(公告)号:US20230188886A1

    公开(公告)日:2023-06-15

    申请号:US18164673

    申请日:2023-02-06

    发明人: Zhen WANG Lei ZHANG

    IPC分类号: H04R1/10 H03G5/16

    摘要: The present disclosure is a method for optimizing a working state of a bone conduction earphone. The bone conduction earphone includes an earphone core and at least one vibration sensor. The method includes: obtaining a vibration signal through the at least one vibration sensor, the vibration signal being at least partially derived from vibration generated by the earphone core in response to an audio signal, and the vibration of the earphone core being transmitted to a user wearing the bone conduction earphone through bone conduction; determining a vibration response feature of the earphone core based on the vibration signal and the audio signal; and feeding back a working state of the bone conduction earphone based on the vibration response feature of the earphone core.