Lotus and Harmon partner up to add sound to hybrids
Tony Karrer Delicious EVdriven
APRIL 19, 2009
In the case of RNC, the system reduces broadband noise levels at frequencies below 250Hz whereas EOC tackles harmonic frequencies generated by ignition events in the engine. When a car is operating on the electric motor only, throttle and speed dependent synthesised sound projects an engine sound in front of the vehicle.
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