TYPE 3923

Rotating Microphone Boom

Rotating Microphone Boom Type 3923 is designed for use in sound power measurements to ISO 3741 and in building acoustics. The microphone boom complements the range of sound power and  building acoustic measuring equipment available from Brüel & Kjær.

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The Rotating Microphone Boom Type 3923 is designed for use in sound power measurements to ISO 3741 and in building acoustic measurements.

USE SCENARIOS

  • Sound power measurements
  • Building acoustic measurements

CAPABILITIES

  • Fulfills ISO 3741
  • Length of boom adjustable between 50 cm and 200 cm
  • Battery operation with built-in NiCd-cells or line operation
  • Three switch-selectable rotation times
  • Plane of rotation adjustable in steps of 10 degrees
  • Synchronization facility
  • Power to and signal from microphone via slip rings
  • Typical emitted sound power equal to 26 dB re 1 pW (A-weighted)