Patents Assigned to Lab.gruppen AB
  • METHOD OF DETERMINING AN IMPEDANCE FUNCTION OF A LOUDSPEAKER
    Publication number: 20100194413
    Abstract: The invention relates to a method of determining an impedance function IF of a load LS driven by an amplifier AM, said method comprising the steps of providing a digital audio signal DAS to said amplifier AM, measuring one of either a current signal representation CSR of current provided to said load LS by said amplifier AM or a voltage signal representation VSR of voltage provided to said load LS by said amplifier AM, determining a digital signal representation DSR on the basis of said digital audio signal DAS, and determining said impedance function IF of said load LS on the basis of said digital signal representation DSR and said measured one of either said current signal representation CSR or said voltage signal representation VSR.
    Type: Application
    Filed: July 16, 2007
    Publication date: August 5, 2010
    Applicant: LAB.GRUPPEN AB
    Inventors: Klas Åke Dalbjörn, Kim Rishøj Pedersen
  • Sound amplifier
    Patent number: D617306
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: June 8, 2010
    Assignee: Lab.gruppen AB
    Inventor: Ivar Iversen
  • Sound amplifier
    Patent number: D710821
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: August 12, 2014
    Assignee: Lab.Gruppen AB
    Inventor: Emil Marklund
  • Sound amplifier
    Patent number: D722588
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: February 17, 2015
    Assignee: Lab.gruppen AB
    Inventor: Scott Boyd
  • Amplifier
    Patent number: D739375
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: September 22, 2015
    Assignee: LAB.GRUPPEN AB
    Inventor: Oskar Daniel