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Bruel & Kjaer 4227 FOR RENT

Mouth Simulator, Continuous SPL of 110dB (200Hz to 2kHz)

Rent instruments from Transcat - Weekly and monthly rentals available. Weekly and monthly rentals available.
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Order #: 4227-RENT2

Mfg Part #: 4227

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Overview :

Bruel & Kjaer 4227 Highlights

The Bruel and Kjaer 4227 is an accurate reference sound source developed for near field testing of telephone transmitters and microphones. It provides a standardised and realistic simulation of the human voice field.

  • Conforms to IEEE-269, IEEE-661 and ITU-T P.51
  • Accurate level and frequency response calibration is easily done using a Bruel & Kjaer ½" microphone placed in the supplied calibration jig
  • Accurate simulation of human voice field
  • Quality control testing of frequency response and distortion of telephone transmitters and close-talking microphones
  • Continuous SPL of 100dB 25mm from lip ring
  • Low distortion
  • Built-in overload protection circuit
  • At 25mm from lip ring, 20mm diameter Mouth Opening, Low-distortion sound source used for testing acoustic transducers