Bruel & Kjaer 4227 Mouth Simulator
  • Bruel_Kjaer_Type_4227_View1_201631711127
  • Bruel_Kjaer_Type_4227_View2_201631711127
  • Bruel_Kjaer_Type_4227_View3_201631711127
  • Bruel_Kjaer_Type_4227_View4_201631711127
  • Bruel_Kjaer_Type_4227_View5_201631711127

Bruel & Kjaer 4227 Mouth Simulator

This Bruel & Kjaer 4227 Mouth Simulator is used and in excellent condition. This unit does not include the lip ring.

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Stock # 87920-1
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Bruel & Kjaer Type 4227 Mouth Simulator

  • Accurate Simulation of Human Voice Field
  • Continuous SPL of 110 dB at 25 mm from Lip Ring
  • Low Distortion
  • Built-In Overload Protection Circuit


The Bruel & Kjaer Type 4227 Mouth Simulator is a stable, low distortion sound source used for the testing of acoustic transducers. When testing telephone transmitters and close talking microphones it is required that the sound field closely replicates the sound field generated by the human mouth. Type 4227 consists of a high quality loudspeaker mounted in a specially shaped housing. A lip ring is mounted on the upper surface of the unit, providing a convenient reference plane for measurements.

Product Family: Type 4227

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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Bruel & Kjaer Type 4227 Mouth SimulatorBruel & Kjaer Type 4227 Mouth SimulatorBruel & Kjaer Type 4227 Mouth Simulator
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Manuals, Datasheets, Drivers, Links

Bruel & Kjaer Type 4227 Datasheet (pdf) 
Link to Bruel & Kjaer Website 

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