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 Forum index » Clavia Nord Modular » G2 Patches - Completed » FX
Deluxe Granular Stereo Pitch Shifter
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Tim Kleinert



Joined: Mar 12, 2004
Posts: 1027
Location: Zürich, Switzerland
Audio files: 6
G2 patch files: 212

PostPosted: Fri Jun 11, 2010 1:48 pm    Post subject: Deluxe Granular Stereo Pitch Shifter
Subject description: doing it the granular way, with jitter etc.
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As the title says. Different than the "classic" design I made before. ( arrow http://www.electro-music.com/forum/post-298522.html )

With the granular approach, "flangey" artifacts can be masked by jittering the grain base frequency and the grain pitch. Pitch jitter gives a nice chorusy sound too.
I ganged grain frequency (=size reciprocally) to grain pitch when pitching upwards in order not to exceed the 1 seconds delay limit. There's a feedback loop in there too, just for fun.

This is a dual-grain engine. I also have a four-grain design here, which can create far denser/fatter sounds. However, it suffers from not having logarithmic crossfading, which makes it sound more artificial when doing "normal" pitch-shifting, so it's more like a special effect. I might post it too later.

Cheers,
t


GranuPitShift_TK.pch2
 Description:
doing it the granular way, with jitter etc.

Download
 Filename:  GranuPitShift_TK.pch2
 Filesize:  3.82 KB
 Downloaded:  695 Time(s)


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Tim Kleinert



Joined: Mar 12, 2004
Posts: 1027
Location: Zürich, Switzerland
Audio files: 6
G2 patch files: 212

PostPosted: Fri Jun 11, 2010 3:41 pm    Post subject: Reply with quote  Mark this post and the followings unread

Just to be complete: Here's the aforementioned (one post earlier, scroll up) quad-grain stereo pitch shifter. As mentioned, straightforward pitch shifting doesn't sound as good here because of the linear crossfading as opposed to logarithmic which is more suitable for audio, but isn't possible to implement due to DSP restrictions (the patch maxes out a whole DSP). Also, four grains also cause more potential phase cancellations anyway.

But with jitter added, it actually sounds quite nice in a FX-ish sort of way.


4GrainPShifterTK.pch2
 Description:
Granular pitch shifter with 4-grain engine. Less suitable for straightforward shifting, but nice for a more fx-ish sound.

Download
 Filename:  4GrainPShifterTK.pch2
 Filesize:  4.37 KB
 Downloaded:  681 Time(s)


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