Using selective intensity and a HATS to evaluate noise sources in a car working at idle

With these experiments, it can be evaluated, on the one hand, the coherence between the intensity in the driver's seat and external microphones located on both sides of the frontal axle of the car, in the exhaust and in the engine. On the other hand, it is evaluated the coherence between sound intensity in the same external points of the car and different positions of a HATS outside and inside of it; thus, as novelties the relation between the noise emitted by different parts of the vehicle and the noise perceived by the vehicle's driver and by people located outside could be studied.