no, Do-Re-Mi..., not Sa-Re-Ga

inverters of the motors. electricity stuff. dont actually know anything about stuff like that because i'm not an engineer but have heard from everyone that its the so-called inverters. heard on many other trains too, for example on the ICE 3 where it first humms and then at like 7 km/h the tone goes from deep to high

let's just say its engineering magic

It's the sound of the motor changing frequency as it accelerates

@@ryzenoctavian yes indeed

I thought it was active sound design

thats literally the same lcoo. the taurus, either ES64U4 or DB BR 182 or ÖBB BR 1016/1116

​@@Myron0117No ist not. Its a U2. U4 is the ÖBB 1216 and has no Sound.

@@icebroswii.8162 yes I realised later on but thank you. but it's wrong that the ES64U4 has no sound, it has sound, just no musical scale