Patents Assigned to Soft DB Inc.
  • Method and system for measuring amplitude and phase difference between two sinusoidal signals
    Patent number: 8564339
    Abstract: A method and a system for measuring amplitude and phase difference between two sinusoidal signals, using an adaptive filter. The method generally comprises measuring a sample of an output signal of a system excited by a sample of a reference signal; using an adaptive filter and the sample of the reference signal to determine a and b coefficients that minimize a prediction error on the sample of the output signal, iteratively, and determining the amplitude and/or phase of the output of the system using the a and b coefficients.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: October 22, 2013
    Assignee: Soft DB Inc.
    Inventors: Bruno Paillard, Alex Boudreau
  • Method and system for measuring amplitude and phase difference between two sinusoidal signals
    Publication number: 20130043907
    Abstract: A method and a system for measuring amplitude and phase difference between two sinusoidal signals, using an adaptive filter. The method generally comprises measuring a sample of an output signal of a system excited by a sample of a reference signal; using an adaptive filter and the sample of the reference signal to determine a and b coefficients that minimize a prediction error on the sample of the output signal, iteratively, and determining the amplitude and/or phase of the output of the system using the a and b coefficients.
    Type: Application
    Filed: August 16, 2012
    Publication date: February 21, 2013
    Applicant: SOFT DB INC.
    Inventors: BRUNO PAILLARD, ALEX BOUDREAU
  • Sound volume automatic adjustment method and system
    Patent number: 8116461
    Abstract: A control method to automatically adjust the volume of a sound transmitter based on the measurement and the computation of the acoustic statistics of the room where the sound is emitted. The system comprises at least one sensor, a calculator determining statistics of the signal collected by the at least one sensor and a controller using these statistics provided by the calculator to adjust the volume of the transmitter in the room.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: February 14, 2012
    Assignee: Soft DB Inc.
    Inventors: Andrė L'Espérance, Alex Boudreau, François Gariepy
  • Auto-adjusting sound masking system and method
    Patent number: 7460675
    Abstract: A system and method for generating a masking noise level and spectrum automatically adjusted to obtain a target masking noise spectrum in a room. The system comprises a white noise generator and a mask filter automatically determined according to a correction of an acoustical response of the room and to the target masking noise corrected by an ambient noise.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: December 2, 2008
    Assignee: Soft DB Inc.
    Inventors: André L'Espérance, Alex Boudreau