observation about driving sound

  • Hello,
    I have observed that the Lokomotive driving sound (the one that starts at about 40km/h) is reaches the original tone / velocity when driving at 100km/h.
    However, on my PC, i have observed that this only occurs when using 11kHz sound files.
    With higher quality sounds the original tone is played at much higher speeds that is:
    22kHz sound reaches original tone/velocity at 200km/h
    22kHz sound reaches original tone/velocity at 400km/h


    Did other route developers found the same?


    44kHz sound ensures the smoothest transition of sound tones so it would be useful to have them played at the original tone at 100km/h


    thank you
    etr212