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)