Can you use `Mathf.SmoothDamp()` inside a `foreach` loop? As in:
oldSource = GameObject.FindGameObjectWithTag ("backgroundSound").GetComponents<AudioSource> ();
foreach (AudioSource src in oldSource) {
src.volume = Mathf.SmoothDamp (src.volume, 0, ref currentVelocity, timeToChange);
}
How would one have to deal with the `ref currentVelocity`, since all those audio sources might be at a different volumes at that time, and change with a different velocity. Obviously, I can't just take the same variable over and over again but how to do that differently?