AUDI e-sound for electric cars

I’m not sure what ratio of cool, fascinating, and dumb this is.

For future use in its electric ‘e-tron’ models, AUDI has developed 'e-sound’, a realtime technique of generating synthetic motor sounds for the essentially silent vehicle in order to warn pedestrians and cyclists of the car’s proximity. while recent legislative efforts in the US are making it mandatory that companies add artificial engine sounds to electric vehicles, manufacturers are taking the requirement as an opportunity to experiment with the creation of a perfect sound signature to represent the brand.

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AUDI e-sound for electric cars