Acoustic calibrations

Do you know the response of your microphone to different sound fields?

Get your microphones calibrated, and know their sensitivity with low uncertainty and use a reliable, well characterised measurement microphone in your acoustic measurements.

Calibrations provide reliable and traceable microphones

DFM carries out research on microphone calibration. This research allows us to offer the following calibration services:

  • Free-field and pressure reciprocity calibration of laboratory standard microphones in an extended frequency range
  • Free-field and pressure secondary calibration of measurement microphones
  • Determination of the acoustic impedance of ear simulators
  • Special calibration services such as diffuse-field calibration of measurement microphones

Services

Calibration of microphones – traceable to the Danish primary standard 

Service no. Description
K08.001 Microphone, pressure, reciprocity, LS1, DANAK accr. no. 255
K08.002 Microphone, pressure, reciprocity, LS2, DANAK accr. no. 255
K08.003 Microphone, free-field, reciprocity, LS1, DANAK accr. no. 255
K08.004 Microphone, free-field, reciprocity, LS2, DANAK accr. no. 255
K08.005 Microphone, free-field comparison (LS1, LS2, WS1 or WS2), DANAK accr. no. 255
K08.008 Microphone, pressure comparison (LS1, LS2, WS1 or WS2), DANAK accr. no. 255
K08.010 Microphone, HF-calibration, free-field reciprocity WS3, DANAK accr. no. 255
K08.011 Microphone, HF-calibration, free-field comparison WS3, DANAK accr. no. 255

 

Frequency ranges:

Pressure LS1:              20 Hz to 12.5 kHz

Pressure LS2:              20 Hz to 25 kHz

Free-field, LS1:            1 kHz to 20 kHz

Free-field, LS2:            2 kHz to 30 kHz

 

Calibration outside the above frequency ranges can be arranged. Contact DFM for further information.

Product information and pricing

You may find the prices for our acoustic calibrations here.