Patents Assigned to Comptoir de la Technologie
  • Active device for attenuating the intensity of sound
    Patent number: 6463156
    Abstract: An active device for attenuating noise in a defined region using anti-noise waves. Sensors capable of detecting noise waves and the direction of the waves and providing data to a processor for controlling an electro-acoustic source so that the source emits anti-noise waves in a direction counter to the direction of the incoming noise waves.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: October 8, 2002
    Assignee: Comptoir de la Technologie
    Inventors: Lionel Gaudriot, Jacques Martinat
  • Active device for attenuating the sound intensity
    Patent number: 5834647
    Abstract: A device for attenuating noises generated by moving sources includes a set of arranged electroacoustic sources which emit an opposite antinoise wave in response to an incident wave as sensed and processed. The electroacoustic sources are arranged to preferably emit a synchronous antinoise wave having a radius of curvature approximating that of the incident wave.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: November 10, 1998
    Assignee: Comptoir De La Technologie
    Inventors: Lionel Gaudriot, Jacques Martinat