Noise Source Identification
One of the most powerful tools that can be used in modern acoustics labs today is noise source identification. By identifying where the noise source(s) may be located, it becomes much easier then, to try and reduce/remove/modify the overall dB level of a product. This is typically the end result of a noise reduction program, which is the typical goal of all NVH programs. Over the years many different techniques have become available as technology moves forward. In the beginning it was simple sound‐pressure mapping techniques, then sound intensity added a new dimension to the art and science of NSI (noise source identification); last, multichannel applications such as acoustic holography and beamforming have given us tools that far exceed our capabilities of even 10 years ago. As with any advance in technology, each technique has strengths and weaknesses which must be understood to ensure proper measurement and analysis.
Adams has varied solutions for different applications
Stationary Noise source identifications by scanning methods
Dynamic Noise Source Identification