Patents by Inventor Bruce S. Lavoie

Bruce S. Lavoie 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).

  • Auto-calibrating surround system
    Patent number: 7158643
    Abstract: A multi-channel surround sound system and method is described that allows automatic and independent calibration and adjustment of the frequency, amplitude and time response of each channel of the surround sound system. The disclosed auto-calibrating surround sound (ACSS) system includes a processor that generates a test signal represented by a temporal maximum length sequence (MLS) and supplies the test signal as part of an electric input signal to a loudspeaker. A microphone coupled to the processor receives the signal in a listening environment. The processor correlates the received sound signal with the test signal in the time domain and determines from the correlated signals a whitened response of the audio channel in the listening environment.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: January 2, 2007
    Assignee: Keyhold Engineering, Inc.
    Inventors: Bruce S. Lavoie, William R. Michalson
  • Auto-Calibrating Surround System
    Publication number: 20010038702
    Abstract: A multi-channel surround sound system and method is described that allows automatic and independent calibration and adjustment of the frequency, amplitude and time response of each channel of the surround sound system. The disclosed auto-calibrating surround sound (ACSS) system includes a processor that generates a test signal represented by a temporal maximum length sequence (MLS) and supplies the test signal as part of an electric input signal to a loudspeaker. A microphone coupled to the processor receives the signal in a listening environment. The processor correlates the received sound signal with the test signal in the time domain and determines from the correlated signals a whitened response of the audio channel in the listening environment.
    Type: Application
    Filed: April 20, 2001
    Publication date: November 8, 2001
    Inventors: Bruce S. Lavoie, William R. Michalson