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Old 16th July 2005
  #18
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Check this out:

http://www.audiomedia.com/archive/re...earsanalog.htm

Particularly relevant quote from the text:
Quote:
The listener might actually perceive a slightly lower (or higher) pitch. For a singer, it means that inside his or her head their voice is in tune with the track, but in the control room, the producer is saying... "that’s great, but you were a little flat on that take." It’s virtually impossible for the singer to sing in tune because they are in tune inside his or her head! Even worse, if the producer also has the volume in the control room cranked up, because his or her accuracy is also diminished, he or she might not notice the singer was off pitch.
and

http://www.acoustics.hut.fi/teaching/S-89.320/KA6b.pdf

and

http://hyperphysics.phy-astr.gsu.edu...und/pitch.html

I believe it to be a real effect.

JoeQ, pitch and tempo are different....they are linked by speed of the recording medium, but they are not necessarilly dependant (i.e. you can do a pitch shift while keeping tempo constant).

Regarding the concept of singing closed loop to a pitch shifted source....no you wouldn't just naturally start singing a little flat to compensate, you need that closed loop feedback on every note to know if you're in tune or not. You're a drummer, well imagine playing drums to a headphone feed that is delayed by 200 ms (not in time with the music). You now need to play well ahead of the music in order to make the playback you hear sound right....how's your playing going to be? I bet you won't be 'in the pocket'...just like a singer won't be solidly 'in tune'.

Cheers,

Kris