Sound generator for electric vehicles

It is the object of the present invention a sound generator (1) connectable to an electric or hybrid vehicle (9) with a motion detection interface (2) that can be associated to a member of the kinematic chain transmitting the motion from the electric motor to the wheel and with an acoustic apparatus (3) suitable to produce a sound and modulate the characteristics thereof (volume, tonality, frequency, ...) depending on the movement of the member detected by the detection interface.