acoustics

National Laboratory of Acoustics

Acoustics at primary level

DFM is the national laboratory for free-field calibrations and one of the best laboratories in the world. We offer many different measurements and calibrations within acoustics and we provide traceability to a large number of manufacturers and laboratories around the world.

We work constant to develop new services that are in demand by Danish companies but also to improve existing services.

We offer services in the following areas:

    • Calibration of pressure sensitivity
    • Calibration of free-field sensitivity
    • HF calibrations
    • Reciprocity calibrations
    • Comparison calibrations
    • Calibration of pistonphones
    • Calibration of sound calibrators
    • Calibration of ear simulators
    • Acoustic software

    If you have questions, are looking for guidance or can not find what you are looking for on our website then contact us.

     

    Calibration of absolute pressure sensitivity of microphones

    DFM offers accredited calibration of absolute pressure sensitivity of microphones both as reciprocity, comparison and actuator response.

    We offer calibrations of all types of microphones over a wide frequency range from 2 Hz to 200 kHz.

    All calibrations are performed in our accredited laboratory at DTU in Lyngby.

    Accredited calibration in the area:

    Calibration pressure pressure calibration:

    Frequency range (LS1 and selected WS): 2 Hz – 12.5 kHz

    Frequency range (LS2): 2 Hz – 31.5 kHz

    Contact person

    Salvador Barrera-Figueroa

    Senior Researcher, Acoustics
    +45 2545 9020
    sbf@dfm.dk

    Datasheet

    Actuator response:

    Frequency range (WS1, WS2, WS3): 2 Hz – 100 kHz

    Calibration outside accreditation in the area:

    Actuator response:

    Frequency range (WS1, WS2, WS3): 100 kHz – 200 kHz

     

    If you want calibration outside these areas, contact us for more information.

     

    Accredited calibrations are performed in accordance with DANAK Accreditation Reg. Nr. 255 as well as our internally ISO 9001 certified quality system.

    Calibration of free-field sensitivity

    DFM offers calibration of absolute free field sensitivity of microphones, both as reciprocity and comparison.
    We offer calibrations over a wide frequency range.

    Accredited calibration in the area:

    Free field reciprocity calibration:

    Frequency range (LS1): 250 Hz – 21 kHz

    Frequency range (LS2): 250 Hz – 31.5 kHz

    Free field comparison calibration:

    Frequency range (LS1, WS1): 250 Hz – 25 kHz

    Frequency range (LS2, WS2): 250 Hz – 30 kHz

    Frequency range (WS3): 250 Hz – 100 kHz

     

    If you want calibration outside these areas, contact us for more information.

     

    Accredited calibrations are performed in accordance with DANAK Accreditation Reg. Nr. 255 as well as our internally ISO 9001 certified quality system.

    Datasheet

    Contact person

    Salvador Barrera-Figueroa

    Senior Researcher, Acoustics
    +45 2545 9020
    sbf@dfm.dk

    Calibration of piston phone, calibrator and simulator

    DFM offers calibration of piston phones, sound calibrators, multifunction calibrators and ear simulators.

    Accredited calibration in the area:

    Pistonphone calibration

    Sound calibrator and multifunction calibrator

    Ear simulator:

    Frequency range: 20 Hz – 16 kHz

    If you want calibration outside these areas, contact us for more information.

    Contact person

    Salvador Barrera-Figueroa

    Senior Researcher, Acoustics
    +45 2545 9020
    sbf@dfm.dk

    Datasheet

    Accredited calibrations are performed in accordance with DANAK Accreditation Reg. Nr. 255 as well as our internally ISO 9001 certified quality system.

    Do you want to be in dialogue with DFM?