Patents by Inventor Hongqiang MO

Hongqiang MO 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).

  • Patent number: 11735200
    Abstract: The present invention discloses a dual-microphone adaptive filtering algorithm for collecting body sound signals, characterized in that, using at least two microphones, a primary microphone and a secondary microphone, to collect signals; the primary microphone is used to collect noisy body sound signals, and the secondary microphone is used to collect environmental noise; applying a same high-pass filtering to signals collected by the primary microphone and signals collected by the secondary microphone; using a normalized least mean square algorithm on the primary microphone signals and the secondary microphone signals after the high-pass filtering to calculate a weight of the adaptive filter and to calculate an error signal to filter out environmental noise in the primary microphone signals; processing the error signal for a first time by a low-pass filtering to restore the body sound signals, to obtain the body sound signals output by the adaptive filtering algorithm.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: August 22, 2023
    Assignees: SOUTH CHINA UNIVERSITY OF TECHNOLOGY, FOSHAN BAIBUTI MEDICAL TECHNOLOGY CO., LTD.
    Inventors: Hongqiang Mo, Xiang Tian
  • Publication number: 20220005491
    Abstract: The present invention discloses a dual-microphone adaptive filtering algorithm for collecting body sound signals, characterized in that, using at least two microphones, a primary microphone and a secondary microphone, to collect signals; the primary microphone is used to collect noisy body sound signals, and the secondary microphone is used to collect environmental noise; applying a same high-pass filtering to signals collected by the primary microphone and signals collected by the secondary microphone; using a normalized least mean square algorithm on the primary microphone signals and the secondary microphone signals after the high-pass filtering to calculate a weight of the adaptive filter and to calculate an error signal to filter out environmental noise in the primary microphone signals; processing the error signal for a first time by a low-pass filtering to restore the body sound signals, to obtain the body sound signals output by the adaptive filtering algorithm.
    Type: Application
    Filed: October 10, 2019
    Publication date: January 6, 2022
    Applicants: SOUTH CHINA UNIVERSITY OF TECHNOLOGY, FOSHAN BAIBUTI MEDICAL TECHNOLOGY CO., LTD.
    Inventors: Hongqiang MO, Xiang TIAN