Patents by Inventor Ho Yiu MAK

Ho Yiu MAK has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Soft acoustic boundary plate
    Patent number: 11905703
    Abstract: A soft boundary structure is implemented using a resonator structure capable of receiving sound or vibration, establishing resonance coupled with received sound or vibration, and creating a reflection with a pi phase factor. A soft boundary is located on or closely adjacent the resonator structure. The soft boundary cooperates with the resonator structure to attenuate the sound or vibration.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: February 20, 2024
    Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Ping Sheng, Ho Yiu Mak, Xiaonan Zhang, Zhen Dong
  • SOFT ACOUSTIC BOUNDARY PLATE
    Publication number: 20210381231
    Abstract: A soft boundary structure is implemented using a resonator structure capable of receiving sound or vibration, establishing resonance coupled with received sound or vibration, and creating a reflection with a pi phase factor. A soft boundary is located on or closely adjacent the resonator structure. The soft boundary cooperates with the resonator structure to attenuate the sound or vibration.
    Type: Application
    Filed: December 23, 2019
    Publication date: December 9, 2021
    Inventors: Ping SHENG, Ho Yiu MAK, Xiaonan ZHANG, Zhen DONG
  • Low frequency acoustic absorption and soft boundary effect with frequency-discretized active panels
    Patent number: 10991358
    Abstract: An active sound barrier has at least one passive sound absorber at or near a boundary location. A microphone provides an output to a frequency division module, in which a plural of frequencies are filtered to provide outputs corresponding to frequency segments of the receiving transducer output at respective ones of the frequencies. An active driving circuit drives plural speakers or output transducers at respective ones of the frequencies, with at least a subset of the speakers or output transducers at or close to the barrier. The speakers or output transducers cooperate with the passive sound absorber to reduce noise across a wide frequency band as well as to effect an electrically switchable soft boundary.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: April 27, 2021
    Assignees: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, HONG KONG BAPTIST UNIVERSITY
    Inventors: Ping Sheng, Zhen Dong, Xiaonan Zhang, Jie Pan, Ho Yiu Mak, Guancong Ma
  • Low Frequency Acoustic Absorption and Soft Boundary Effect with Frequency-Discretized Active Panels
    Publication number: 20200211527
    Abstract: An active sound barrier has at least one passive sound absorber at or near a boundary location. A microphone provides an output to a frequency division module, in which a plural of frequencies are filtered to provide outputs corresponding to frequency segments of the receiving transducer output at respective ones of the frequencies. An active driving circuit drives plural speakers or output transducers at respective ones of the frequencies, with at least a subset of the speakers or output transducers at or close to the barrier. The speakers or output transducers cooperate with the passive sound absorber to reduce noise across a wide frequency band as well as to effect an electrically switchable soft boundary.
    Type: Application
    Filed: December 31, 2019
    Publication date: July 2, 2020
    Inventors: Ping SHENG, Zhen DONG, Xiaonan ZHANG, Jie PAN, Ho Yiu MAK, Guancong MA