We're working on introducing a new 'engine type' that is electric. As such we need to model it's operation as well as associated sounds.
This is what we know or have observed:
Throttle isn't notched. It's a lever that seems to work like a continuously varying slider.
There is a slight hum of the motor that seems to increase in pitch as the throttle is increased. Not loud prime mover sounds like that of a diesel locomotive but a light hum of an electric motor.
It'it has been suggested in another thread that there's also a constant blower sound.
We're looking for inputs possibly with examples as to what the prototypical operation of an electric locomotive would like. There's possibly variations in different electric types too. We would like to consider all suggestions.