Microphone calibration

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

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

Information about these services can be found following this link...

Different types of calibration

Calibration of microphones – traceable to the Danish primary standard 

Item nr.



Microphone, pressure LS1, DANAK accredited nr. 255


Microphone, pressure LS1, DANAK accredited nr. 255


Microphone, free-field LS1, DANAK accredited nr. 255


Microphone, free-field LS2, DANAK accredited nr. 255


Microphone, free-field comparison, DANAK accredited nr. 255

Areas of frequency:

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 mentioned frequency areas can be arranged.


We hope to create an easy overview of some of our services by giving you the opportunity to download the price list.

Download pricelist 

Please review our pricelist. If you do not find what you are looking for, do not hesitate to contact us.

If you have questions, please use this form.