SpacyShifters

Tim Kleinert

This patch processes incoming audio via four high quality DIY pitch shifters, each based on a 1 second delay line. This large amount of delay time means that transients are totally garbled, but there are none of the ugly "flangey" artefacts usually associated with this type of processing.

The outputs of these four pitch shifters are blended together by a twodimensional XY "joystick-type" crossfader (eg. like the joystick on the Prophet VS and others). This mix is then fed back into the shifters, resulting in a gradual buildup of increasingly complex intervallic structures and generating an organically evolving tonal (or not so tonal, depending on semitone settings) ambient drone around the input. Tweaking the XY crossfader creates caleidoscope-like changes in the spectrum, as different pitch shifters (with different shifting amounts) come more or less into prominence. Experiment with different shift amounts for different tonalities and quasi-chords. Smile

The feedback loop is pretty stable. However, I threw a limiter in there too, just to be safe.

The pitch shifters also feature subtle modulation for chorus-like thickening of the sound within the feedback loop. There's a chorus/delay at the end to add a stereo image to the sound.

Controls:
Page A1:
INPUT and OUTPUT section. Self-explanatory (I hope Wink

).
Page A2:
SHIFT 1 - 4: Semitone shift amount of the four pitch shifters
VECTOR X,Y: position of the joystick-type quad-crossfader
FEEDBACK Level: Amount of feedback into the pitch shifter network
SHIFTERS Dry/Wet: balance between original and processed audio
Page A3:
MODULATION Speed, Depth: subtle pitch modulation of the shifters.
Page E1:
DELAY dry/wet, time, feedback, damping frequency, modulation depth and rate controls

Only one variation, with my personal favourite setting. Smile

Uses one DSP.

have fun.

SpacyShifters TK.pch2

Description:

high quality quad DIY pitch shifter network, makes nice ambient drones out of single notes

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SpacyShifters TK.pch2

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iPassenger · Posted: Thu Jun 26, 2008 9:34 am Post subject:

Awesome, again!!

Just added three sine wave oscs (tuend differently) to the poly area, routed through the bus and voila instant trippy pads. Smile

and finally a really good use for my x-y controller.

Fab work fella.

Thanks

R.

gomidas · Posted: Thu Jul 31, 2008 3:19 am Post subject:

TK = pushing the limits... again!! Cool

Thanks

dorremifasol · Posted: Sat Nov 01, 2008 3:52 pm Post subject:

I'm speechless, who needs an eventide now? Razz

scottylad · Joined: Nov 02, 2009 Posts: 5 Location: Los Angeles, CA

This is amazing, Tim. Ironically, you inspired me to actually BUY an Eventide, so you just cost me a chunk of change!

My Matrix 1000 sounds amazing through this thing!

A couple of questions, as there is one obstacle to using this in production: There's a bit of reverb "fizzle" during the decay after the note is released. I can certainly reduced the feedback to mitigate this, but that has other unwanted effects - less spacey shifting! I'd like the decay to slowly fade away cleanly.

Also, where can I adjust the 1 second delay time to begin more or less immediately? Can this be controlled for each shift unit? Forgive me, I'm a bit of a G2 neophyte.

And I'm curious, did you model this after a known Eventide algorithm? If so, which one? I'm curious if the same thing could be accomplished with an Eclipse or if they have that flexibility.

Thanks again for this piece of heaven!

Roland Kuit · Posted: Wed Mar 03, 2010 4:56 pm Post subject:

as ever: B E A U T I F U L L!!!
thanks tim. your a delay master:)

Tim Kleinert · Posted: Wed Mar 03, 2010 9:43 pm Post subject: Re: Wow!