Why Do Electric Vehicles Make Noise?

[DiPeter]

Because all pure electric vehicles are required to emit such warning sounds at low speeds, the relevant explanation is as follows: Reason: The vast majority of pure electric vehicles produce a peculiar "humming" sound when driving at very low speeds. This sound is completely inaudible inside the vehicle and can only be heard outside, specifically near the front of the car. Moreover, as soon as the speed increases, this sound immediately disappears. Additional Information: In fact, this sound is not from the motor but is artificially generated. The sound does not originate from the motor itself but is emitted by a dedicated speaker. This sound is known as the low-speed warning tone. Currently, the low-speed warning tone is a national standard in the pure electric vehicle industry, and almost all pure electric vehicles are mandated to emit such a warning sound when driving at low speeds.