Danish Primary Laboratory on Acoustics

  • Rasmussen, Knud (Project Manager)
  • Olsen, Erling Sandermann (Project Participant)

Project Details


The Danish Primary Laboratory on Acoustics, DPLA, was established in 1991 by the Ministry of Industry. The laboratory is based on a cooperation agreement between the Department of Acoustic Technology, DTU, and the company Brüel & Kjær A/S. The Danish Primary Laboratory on Acoustics is accredited by the Danish Accreditation Body for Testing Laboratories, DANAK, to carry out primary calibration of microphones and accelerometers.
The development of new software for free-field reciprocity calibration of microphones was nearly finished by the end of 1997. The measurement system makes it possible to carry out automated calibrations in a wide frequency range (from 630 Hz to 100 kHz) and for measurement distances in the range from 200 to 800 mm between the microphones, variable in steps of 0.1 mm.
An automatic measurement system has been developed for the calibration of pistonphones.
DANAK has appointed the Danish Primary Laboratory on Acoustics to organise an intercomparison on the calibration of pistonphones and sound calibrators among accredited laboratories under the auspices of EA, European cooperation for Accreditation. The intercomparison was conducted in 1998/1999 and the final report issued in December 1999.
Effective start/end date01/01/1992 → …


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