newb question: What is doppler?

[ReliXKeepeR]

http://en.wikipedia.org/wiki/Doppler_effect

and some additional info for the studious - http://en.wikipedia.org/wiki/Christian_Doppler

[Guglielmino]

One of uses of this principle lies in the Leslie rotary speaker, afaik.
Hope this helps

[Meffy]

I was just wondering what the audio effect did and how you could use it in an audio production

Autobahn -- Kraftwerk

And yes, a subtle but noticeable Doppler shift is part of the Leslie rotary speaker's sound.

[splattabreakz]

the hard to find Aldoppler.dll vst effect is very f**king cool.