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Topic: How does it work ?< Next Oldest | Next Newest >
GMOVJ Offline




Group: Members
Posts: 273
Joined: Dec. 1999
Posted: Dec. 18 2001, 05:35

Hi all
I know my question is certainly stupid, but I don't know anything in sound effects, sampling and synths AT ALL.

I read this in the EXCELLENT Discography (Crises)
Quote
Fairlight CMI - The legendary Fairlight Computer Musical Instrument digital synthesiser workstation. It became most famous for its abilities to record sounds, alter them and play them back at different pitches using the attached piano keyboard (it would in fact accept two keyboards), although its capabilities stretched beyond this.


I used to have a Amiga 2000 and sequence some DIY little music (just for fun, I'm not a great musician or composer...) with some trackers. When I wanted to play a higher note, the trackers used to "speed up" the sample, and when I wanted to play a lower note, the tracker used to slow down the sample. As it speeds up or slows down the sample, it alters the length of the samble. E.g., if I recorder 'pouet', when I play it lower, I makes some 'pppppoooooooouueeet'.
Easy to understand...

So my question is simple (and terribly stupid) : does the F-CMI do the same thing ? Is there a way to get higher or lower pitch without altering the length or the speed of the sample ?

If someone can explain me all this things, it would be great for my simple little brain wink

Cheers
GMOVJ

--------------
Cheers,
GMOVJ
[URL=http://tubular.fodplanet.com]http://tubular.fodplanet.com[/URL] - The french speaking mailing list
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Korgscrew Offline




Group: Super Admins
Posts: 3511
Joined: Dec. 1999
Posted: Dec. 28 2001, 21:49

Seeing as I was responsible for that sentence, I think I'd better give the reply...

Like all instruments based on that kind of digital sampling technology, CMIs have the side effect of speeding up samples as the pitch is raised and slowing them down as the pitch is lowered.

There are now various ways of altering the pitch of sounds without changing the speed (and indeed altering the speed without changing the pitch), though some are more effective than others (most show some kind of side effect after more than a very modest pitch change, though new methods are being developed all the time which give better results - Roland's Variphrase technology is certainly a step in the right direction).

I hope this answers your question.
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