Patents Assigned to Juergen Heitmann
  • Patent number: 6123677
    Abstract: The invention relates to a process for obtaining data on hearing quality by measuring distortion products of otoacoustical emissions (DPOAE) in which two primary tones with the frequencies f.sub.1, and f.sub.2 >f.sub.1 and sound pressure levels L.sub.1 and L.sub.2 and at least one sound event having proportions of the frequency f.sub.3 and the sound pressure level L.sub.3 are applied as stimuli to the hearing organ and at least one distortion product of the defined frequency is determined, where the value of f.sub.3 is close to the frequency of the distortion product.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: September 26, 2000
    Assignees: Juergen Heitmann, Bernd Waldmann, Peter K. Plinkert, Hans-Ulrich Schnitzler, Hans-Peter Zenner
    Inventors: Juergen Heitmann, Bernd Waldmann