Aero acoustic noise in a wind tunnel

Make Noise Sources Visible Using a Microphone Array.

The Noise Inspector of CAE Software & Systems is the tool for precise and quick localisation of unwanted noise sources. Since the measurement is done with a microphone array which can be set up easily and quickly, the system is very mobile and versatile. The processing methods used are applicable to stationary and non-stationary noise sources outdoors and indoors.

Operation:

  • Analysis using beamforming (delay and sum) or nearfield acoustic holography (NAH)
  • Enhancements to beamforming for optimal resolution at low frequencies, e.g. the Capon method or the MUSIC algorithm
  • Further algorithms may be seamlessly integrated due to the open programme structure and the easy to use labVIEW interface
  • Convenient documentation of measurements and analysis results by direct transfer to MS Office
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