Quote:
The noise inside the car comes primarily from wind passing over the various external protuberances of the car, from the tires contacting the road, and to a lesser extent from mechanical sounds made by the car itself.

Not on my car. All the cabin noise that I'd want the stereo to volume-compensate for, ALL OF IT, is tire noise. There is negligible noise from wind or from the engine in the cabin of my car.

An external mic would also pick up some of the wind and mechanical noise too, but I'm primarily interested in overcoming tire noise.
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Tony Fabris