The Brüel & Kjær 4134 Condenser Microphone

Application ID: 12375

This is a model of the Brüel and Kjær 4134 condenser microphone. The geometry and material parameters are those of the actual microphone. The modeled sensitivity level is compared to measurements performed on an actual microphone and shows good agreement. The membrane deformation, pressure, velocity, and electric field are also determined.

The model is a true multiphysics problem that couples:

  • Thermoviscous Acoustics
  • Membrane
  • Electrostatics
  • Moving mesh ALE

About Brüel and Kjær:
Brüel & Kjær is a world leading manufacturer and supplier of sound and vibration test and measurement solutions. The products range from transducers (measurement microphones and vibration transducers), data acquisition and analysis software and hardware, hand held sound level meters, calibration systems, and more. The application areas are many and include aerospace, wind energy, environmental noise and sound, automotive, defense, and audio. See

This model example illustrates applications of this type that would nominally be built using the following products: