Microphone array measurements with acoustic camera

There are a lot of applications for the localization of sound sources with the help of a microphone array. Especially in the industry, for the development of vehicles, machines and devices this method can be of great use. Examples are among other things:

• Localization and separation of sound sources as a requirement for noise control for
  • vehicles and their components, e. g. engine, transmission system, exhaust system, compartment
  • placement machines and production machinery, machine tools
  • generators and turbines
  • power tools and electrical domestic devices, e. g. compressor, vacuum cleaner

• Analysis of sound sources as a basis for acoustic design for
  • structures or scale-model structures in airflow in the wind tunnel, e.g. wing profile of an airplane, pantograph, side-view mirrors of cars
  • complex vibrating structures, e. g. floor section of a car
  • squealing or rattling structures, e. g. car brackets

• Determination of characteristic properties of sound sources and their source mechanisms for
  • electroacoustic transducers, e. g. multi-channel loudspeaker
  • aerodynamically influenced objects, e. g. antennas, roof systems

• Acoustic search for leakages in
  • (vehicle-) doors, windows, etc.
  • pipelines

Your advantages

During the development of the AcoustiCam^®, great importance was attached to the optimization of the microphone array and the subsequent signal processing. This results in numerous advantages, for example:

• fast and robust measurements, at great distance as well as in close proximity to the test object due to the application of the robust beamforming algorithm

• separate localization and analysis of sound sources and source mechanisms

• localization results with high spatial resolution and great dynamic range due to optimized microphone configuration

• special test environment behind the microphone array usually not necessary due to the application of a so-called boundary layer array

Consulting

Besides a detailed documentation of the investigations, we provide you with our expertise to solve your acoustic problems. Furthermore, we develop solutions for the measurement with microphone arrays adjusted to your requirements.