Warning sound for pedestrians

[Zwerius]

If you drive below 30 km/h with the i3, you will hear a warning sound for pedestrians. Where does this sound come from. Is there a speaker somewhere or something? If yes, where? Anyone familiar with these details?

 

[i3daytonoh]

The VSG is located in the space between the bumper and right front tire:

https://www.hubauer-shop.de/en/vehicle-sound-generator-65128801341.html

 

[Zwerius]

Thx