Words4EV.speak 1.0 (en)

Whining is an emergent sound, MF, motor-harmonic and slightly modulating. Its motor-harmonic behavior, similar to "electric whistling" inform on engine functioning and makes the sound natural. Its modulating aspect might turn dissonant, making it unpleasant or acid. Its emergent aspect may be discontinuous in acceleration phases or continuous when engine rpm (rotation per minute) is steady; giving the floor to "electric whistling", becoming uncomfortable and bothersome. Whining is produced by meshing gears, especially regarding electric engine output.