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by qrohlf 714 days ago
There’s some regulation here to contend with that mandates these EV sounds have to include a 1khz-4khz tone which is probably what you’re noticing since it’s on the higher end of the usual urban audioscape. The Verge did an interesting piece on this recently – https://www.theverge.com/24182348/ev-sounds-low-speed-survey...