Calibration of sound intensity instruments

Ljudreduktion hos byggnadsdetaljer kan bestämmas med intensitetsteknikSound intensity is a measure of flow of sound energy and is measured in dB relative 1 pW/m². Characteristics and requirements of the equipment for measurement of sound intensity are given in the standard IEC 61043. There are requirements both on the complete system and on the individual parts; microphone probe, analyzer and calibrator.

Equipment for measurement of sound intensity is verified by RISE against the requirements in IEC 61043. Normally, microphone probe and analyzer are verified together but we can also verify each part separately.

The sound intensity calibrator is calibrated regarding:

  • Sound pressure level
  • Sound intensity level
  • Frequency
  • Distortion
  • Residual intensity of noise source

Occurring defects

  • One of the microphones has a small damage, it is still in working order but the microphone pair is no longer matched. This will result in a residual intensity level.
  • As the probe is handled manually to a great extent, the ends of the cable are exposed to wearing which can result in poor contact.

 

 

Related Information

See also

Calibration - sound and vibration

Contact Persons

Jonas Pettersson

Phone: +46 10 516 50 96

Håkan Andersson

Phone: +46 10 516 54 23

RISE Research Institutes of Sweden, Phone 010-516 50 00, E-mail info@ri.se

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