Tailored Engine Noise in Ford Focus

Ford Focus ST

Ford Europe has developed a tailored engine noise for the new Ford Focus powered by a 1.6-L EcoBoost engine. The system is called the Sound Symposer, which is a box with four chambers, two in the engine bay and two outside. The chambers are separated by a movable flap that opens when the engine is under high load, so that sound is transmitted to the outlet chambers. The system boosts engine volumes into passenger compartment in 200-to-450-Hz frequency range.

Watch the youtube videos to hear it work.

And you watch an advert for the Focus.
See also stories on Ford Media Release, SAE.

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