Noise Sources identification
sources identification is an experimental process requiring high skill and suitable
methodology, unless the goals is just to obtain some sort of "sound mapping"
without any energetic correlation with the sound sources.
Sound intensity has been used for some time as a sources recognition tool, but
in more recent year it has been proven that Holography is able to give far better
results and possibilities for simulating modification to the structure or as
screen material addition.
One example (figure below) is relative to the noise sources identification an
classification of a diesel engine for agricultural machinery, and the subsequent
simulation for investigating achievable noise reduction by modifying the engine