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 Forum index » Clavia Nord Modular » G2 Patches - Completed » Audio In
ElasticAudio X
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Tim Kleinert



Joined: Mar 12, 2004
Posts: 1017
Location: Zürich, Switzerland
Audio files: 6
G2 patch files: 211

PostPosted: Wed Mar 25, 2009 6:08 pm    Post subject: ElasticAudio X
Subject description: deluxe polyphonic elastic audio sampler with force-pitch and formant control
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dear friends,

Here's the final version of the polyphonic elastic audio synth. It offers vastly improved sound quality and precision, plus added functionality like forcing audio material to a specific pitch and controlling formants.

This design differs from the polyphonic granular synth in a fundamental way: The granular approach chops up the source audio arbitrarily into grains which clock at a specific frequency. Since these grains overlap, there is always some phase cancellation in the resulting audio which has to be alleviated by jittering the playback speed of the individual grains. Also, the grain clock bleeds into the audio considerably, and also has to be masked by jitter.

This approach works totally differently. It intelligently scans the source audio for single full wavecycles, clusters those into larger chunks of selectable size and realigns them over the time axis -all in realtime. Cool Hence, all the artefacts (or interesting effects, depending on your taste Laughing) of the granular approach don't occur and the pitch information of the source audio is preserved far more faithfully.

I also added something completely new: "forcing to pitch". When this function is engaged, the audio is indeed "forced" onto a pitch of choice. Technically speaking, the waveform clusters are hardsynced to a carrier wave, and the sharp flanks are smoothed away. When this is activated, the cluster pitch control actually changes into a formant control -so pitch, time and formants are all controllable in realtime. Cool

There's a demo mp3 attached, which demonstrates my voice saying "one two three..." (sorry Laughing), playing some notes on the keyboard and stepping through the 8 variations.

Input Section:

INPUT Source, Pad -select external input channel and pad
INPUT Monitor -listen to the input (running through the input limiter, drive and EQ)
SAMPLE Capture -samples audio (2.7 seconds)
INPUT Limiter -input dynamics
INPUT Drive -overdrive for the input, can be useful
INPUT EQ -EQ for the input, can be useful to add eg. "air" to voices

Elastic Audio Section:

SAMPLE Positio -position pointer in the sampl; also assigned to modwheel (for scrubbing the sample)
SAMPLE Speed -playback speed: from -64 (backwards) to 0 (freeze) to 64 (forwards), independent of pitch; assigned to the pitch stick (for cruising through the sample)
SPEED KBT -lets playback speed track the keyboard
SAMPLE Pitch -playback pitch of the sample, independent of speed;When pitch-forcing is activated, this parameter turns into a formant control.
PITCH KBT -sample pitch keyboard tracking
CLUSTER Size -sets the size of the wave cluster
CL-SIZE Source -this is a nifty one: when set to "cycles", the "CLUSTER Size" parameter determines the amount of single wavecycles to be clustered (when set to 0, this equals 1 wavecycle, which lets you scan through the individual waveforms of your source audio with the pitch stick. It's fun, try it.) When set to "time" however, the "CLUSTER Size" parameters determines the absolute temporal size (=time) of the cluster. This results in an uniform cluster size regardless of playback pitch.

PITCH forcing -activates the pitch forcing function
WAVE smoothing -amount of smoothing applied to the pitch-forced waveforms
FORCED PITCH Coarse, Fine -destination pitch

POSITION Jitter -jitters the sample position
PITCH Jitter -jitters the sample playback pitch
CL-SIZE Jitter -jitters the cluster size ("time" mode will logically render this ineffective)
F-PITCH Jitter -jitters the destination pitch of the pitch-forcing process

The rest is vanilla stuff -filter, amp envelope, chorus, stereo delay, reverb, blablabla.

As usual, this patch uses a DSP per voice, so 3 voices for unexpanded and 7 for expanded G2s.

Also, this patch uses 3 interslot buses!

yupp, that's it. Enjoy. Smile

best,
tim



The demo mp3 demonstrating the 8 variations:
1 - straightforward sample playback, freeze with the pitch stick
2 - freeze with some jitter, cruising about with the pitch stick
3 - force-pitch tonal pad
4 - glitchy warble (big clusters with copious pitch jitter)
5 - slowly scanning single wavecycles
6 - fixed force-pitch with keyboard-tracking formant control
7 - warbling cloud
8 - force-pitch pad with extreme formants


OneTwoThree.mp3
 Description:
audio demo of the ElasticAudioX patch; sampled voice saying "one two three...", noodling around and stepping through the 8 variations.

Download
 Filename:  OneTwoThree.mp3
 Filesize:  2.31 MB
 Downloaded:  1328 Time(s)


ElasticAudioX_TK.pch2
 Description:
Final version of the polyphonic elastic audio synthesizer. Vastly improved algorithm, better sound quality, more functionality.

Download
 Filename:  ElasticAudioX_TK.pch2
 Filesize:  8.47 KB
 Downloaded:  1106 Time(s)


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seraph
Editor
Editor


Joined: Jun 21, 2003
Posts: 12055
Location: Firenze, Italy
Audio files: 31
G2 patch files: 2

PostPosted: Thu Mar 26, 2009 12:56 am    Post subject: Reply with quote  Mark this post and the followings unread

unexplainable but awesome Exclamation

Hail the Master Hail the Master Hail the Master Hail the Master Hail the Master Hail the Master

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iPassenger



Joined: Jan 27, 2007
Posts: 1049
Location: Sheffield, UK
Audio files: 5
G2 patch files: 78

PostPosted: Thu Mar 26, 2009 2:29 am    Post subject: Reply with quote  Mark this post and the followings unread

Yet again its amazing tim, nice work.. Haven't loaded it up yet (at work) but the demo sounds brill.
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drapdap



Joined: Oct 11, 2004
Posts: 193
Location: bp
Audio files: 1

PostPosted: Thu Mar 26, 2009 3:28 am    Post subject: Reply with quote  Mark this post and the followings unread

the demo is so funny, i listened three times by now...
Tim, we're so glad you are. Smile

biggest possible thank you!

robert
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mtvic



Joined: Feb 03, 2003
Posts: 481
Location: Quakertown,PA

PostPosted: Thu Mar 26, 2009 4:35 am    Post subject: Reply with quote  Mark this post and the followings unread

Sounds like Konky the Robot from Pee Wees' Playhouse.
Very useful fun pch

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v-un-v
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Joined: May 16, 2005
Posts: 8930
Location: Birmingham, England, UK
Audio files: 11
G2 patch files: 1

PostPosted: Thu Mar 26, 2009 7:49 am    Post subject: Reply with quote  Mark this post and the followings unread

No wonder Clavia have discontinued the G2! Shocked This is f**king tapped (probably quite literally too eh?) Tim!!

You are a genius mate Very Happy Very Happy

Oh yes Clavia- they have probably realised from your patches alone why it was so silly to leave out sampling on the G2, and why sampling will now appear on the G3........Hooray!! Well just a thought! Cool


And thanks for uploading that mp3 too! Exclamation

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W.T.



Joined: Jul 11, 2004
Posts: 262
Location: The Netherlands
Audio files: 1
G2 patch files: 11

PostPosted: Sun Mar 29, 2009 3:32 am    Post subject: Reply with quote  Mark this post and the followings unread

this is going t be a great Sunday afternoon !

wave
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mother misty



Joined: May 13, 2004
Posts: 679
Location: Ghent / Belgium
Audio files: 82
G2 patch files: 130

PostPosted: Sun Mar 29, 2009 3:49 am    Post subject: Reply with quote  Mark this post and the followings unread

W.T. wrote:
this is going t be a great Sunday afternoon !

wave


+1 Wink

Fantastic patch tim! thank you so much for sharing cheers thumb up too much coffee love banana

misty.

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BobTheDog



Joined: Feb 28, 2005
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PostPosted: Sun Mar 29, 2009 4:10 am    Post subject: Reply with quote  Mark this post and the followings unread

I just think its amazing you can do this on a G2!

Bloody Clever stuff.
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gomidas



Joined: Jul 09, 2004
Posts: 359
Location: La Ciotat, France
Audio files: 1
G2 patch files: 6

PostPosted: Sun Mar 29, 2009 8:02 am    Post subject: Reply with quote  Mark this post and the followings unread

wow!
Another 'Magic' patch from you Tim!
To boldly go where no man has gone before Shocked
Thanks for sharing!
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Chrono



Joined: May 18, 2008
Posts: 229
Location: NL
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PostPosted: Sat Apr 11, 2009 6:34 am    Post subject: Reply with quote  Mark this post and the followings unread

Nice this one is pretty easy to control!! Very Nice Patching!

tnx i will try to use this for some nice vocals Very Happy
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dorremifasol



Joined: Sep 28, 2006
Posts: 768
Location: Barcelona, Spain
Audio files: 7
G2 patch files: 47

PostPosted: Fri Apr 17, 2009 2:15 am    Post subject: Reply with quote  Mark this post and the followings unread

WTF! OMG! Amazing!

The mp3 demo is simply stunning.

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