NSI - Array Acoustics Suite
Noise Source Identification (NSI) is an important method for optimising the noise emission from a wide range of mechanical and electro-mechanical products like vehicle engines, components , aircrafts, appliances, power tools, industrial machinery, etc.
The goal of NSI is to identify the most important sub-sources on an object in terms of position, frequency content and sound power. Ranking of sub-sources may be used to identify where design changes will most effectively improve the overall noise radiation.
The Array Acoustics Suite is a common post-processing environment for array acoustics across all methods and applications available i.e. beamforming, Spherical Beamforming, and Acoustical Holography. The Array Acoustics Suite is a single platform which ensures full interoperability between methods. This means that data from one method can be accessed from a database for display and comparison to any other method. Combining acoustical holography methods with phased array methods gives accurate, high-resolution maps in the full audible frequency range.
Time-domain methods may be used to study transients like impacts and run-ups or to get detailed understanding of stationary sources, for examples, noise radiation versus crank angle on engines. For stationary sources an automated microphone positioning system (robot) may be used to automatically measure across large sources.
Conformal methods may be used to map noise emission on the true 3D surface of the source
Please refer to the Product Data for a complete overview and comparison of array-based NSI solutions.
