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Noise Sources identification

Noise 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 cover.
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