# FFTease & Lyon Potpourri Instrument

**URL:** <https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181>\
**Category:** Organelle\
**Created:** [May 1, 2017, 9:37pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181 "2017-05-01T21:37:37Z")\
**Posts on this page:** 20\
**Page:** 1

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**Author:** ![shreeswifty](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/shreeswifty/32/790_2.png) [@shreeswifty](https://forum.critterandguitari.com/u/shreeswifty)\
**Post date:** [May 1, 2017, 9:37pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/1 "2017-05-01T21:37:37Z")

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Hello

I will be rolling out a patches that incorporates FFT next and i have fingers crossed on a few ideas.  
Back in end of undergrad i was doing an outside concentration on digital music and at that point 199ish  
i got mystified by linux. RedHat5 i think was the number and the two programs you HAD to run on Linux then were Jean Piche’s “Cecilia” which in the past few years got a snazzy python re-write and miller puckette’s free Max, Pd. I first ran pd on SGI with an 8 channel soundcard and it was heavenly. Before Kyma studies and before microsound SuperCollider insanity.

Anyway, i was a devoted fan of Dave Phillips who ran this awesome Linux Audio Page and i basically tried to build everything on the page to learn about languages [Csound, C, C++, compilers, then alot of PERL, then python and of course trying to run the Cmusic PhaseVocoder code as well which worked back then like a dream. So eventually i ran into this interesting programmer Christopher Penrose who came to our Electro-acoustic music festivals and was a fun dude that authored this software called PVNation. It had an elaborate rendering system that strung together interesting algo pairings with Perl and had awesome names and crazy ideas about phase locking vocoders and related insanity. Then we had Eric Lyon come to show work and over the years when i get into something i usually try to emulate the interesting sounds i learned from people like Eric& Christopher the authors of FFTease and I have used the overlapping audio player in Lyon Potpourri successfully several times.

So i wanted to share and also ask for peoples ideas regarding an FFTish instrument. [From FFT i am going to see which ones are suited for organelle]

bthresher~ similar to thresher~ but with more control  
burrow~ a cross-referenced filtering object  
cavoc~ an 8-rule cellular automata that generates spectra  
cavoc27~ a 27-rule cellular automata object  
centerring~ a spectral modulation object  
codepend~ a classic block convolution object  
crossx~ a cross synthesis object with gating  
dentist~ a partial knockout object  
disarrain~ an interpolating version of disarray~  
disarray~ a spectral redistribution object  
drown~ a noise reduction (or increase) object  
ether~ another spectral compositing object  
leaker~ a sieve-based cross fader  
mindwarp~ a spectral formant warping object  
morphine~ a morphing object  
multyq~ a four band filter  
presidency~ a spectral sampler with pitch control  
pvcompand~ a spectral compressor/expander object  
pvgrain~ a spectrum analyzer for granular resynthesis  
pvharm~ a harmonizer  
pvoc~ an additive synthesis phase vocoder  
pvtuner~ a spectrum quantizer for tuning to arbitrary scales  
pvwarp~ a non-linear frequency warper  
reanimator~ an audio texture mapper  
resent~ similar to residency~ but with independent bin control  
residency~ a spectral sampler useful for time scaling  
residency\_buffer~ a spectral sampler that writes to an MSP buffer  
scrape~ a noise reduction (or increase) object with frequency control  
shapee~ a frequency shaping object  
swinger~ a phase swapping object  
taint~ a cross synthesis object  
thresher~ an amplitude/frequency sensitive gating object  
vacancy~ a spectral compositing object  
xsyn~ a cross synthesis with compression object

And i am also going to compile and check

[http://disis.music.vt.edu/eric/LyonSoftware/Pd/LyonPotpourri/](http://disis.music.vt.edu/eric/LyonSoftware/Pd/LyonPotpourri/)  
adsr~ a simple ADSR envelope that can be click triggered  
arrayfilt~ fft-based filtering by drawing into an array  
bashfest~ a click driven buffer player with randomized DSP  
buffet~ provides operations on a stored buffer  
bvplay~ selective playback from a stored buffer with enveloping and increment control  
cartopol~ convert a spectral frame from cartesian to polar form  
channel~ access to a precise address in the signal vector  
chopper~ munging loop playback from a buffer  
clean\_selector~ like selector~ but crossfades when switching channels  
click~ converts a bang to a click  
click2float~ translates a signal click to a float message  
clickhold~ sample and hold a click  
convolver~ non-real-time convolution with impulses of arbitrary size  
distortion~ lookup function distortion  
dmach~ pattern based sample accurate drum machine prototype  
expflam~ converts a click to an exponential flam click pattern  
flanjah~ simple flanger  
granola~ granular pitch scaling  
granulesf~ granular synthesis module reading from a soundfile in a buffer  
granule~ granular synthesis module reading from a stored waveform in a buffer  
greater~ compares two signals on a per-sample basis  
kbuffer~ low sampling rate buffer to capture gestures  
killdc~ DC block filter  
latch~ sustain an incoming click with sample-accurate timing  
magfreq\_analysis~ transforms a time domain signal to a magnitude/frequency spectrum  
markov~ implements a first order Markov chain  
mask~ a click driven pattern sequencer  
npan~ power-panning to an arbitrary number of output channels  
oscil~ oscillator with flexible waveform specification  
phasemod~ phase modulated waveform  
player~ click driven buffer player that can sustain multiple iterations  
poltocar~ convert spectral frames from polar to complex representation  
pulser~ pulse wave generated by additive synthesis  
quadpan~ pan an incoming sound within a quadraphonic plane  
rotapan~ rotate an array of input channels to the same number of output channels  
rtrig~ generates random click triggers  
samm~ sample accurate multiple metronomes, with click signal articulation  
sarec~ sample accurate recording  
sel~ sample accurate implementation of the sel algorithm  
shoehorn~ collapse from a larger number to a smaller number of audio channels  
sigseq~ signal level numerical sequencer  
splitbank~ split an incoming sound into complementary, independently tunable spectra  
splitspec~ split an incoming sound into complementary spectra  
squash~ implementation of a compression algorithm by Chris Penrose  
stutter~ a basic buffer stuttering player  
vdb~ a delay line using an array for storage (no vector limit on feedback delaytime)  
vdp~ a delay line with feedback  
vecdex~ outputs the sample index within the current signal vector  
waveshape~ a Chebychev function lookup waveshaper  
windowvec~ apply a Hann window to the input signal vector

SO i urge you to open some help patches make some things check out how stuff sounds. And we can see what shakes  
I am going to see which ones compile properly tonight then i may have a reduced list we’ll see

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<div class="post-metadata">

**Author:** ![shreeswifty](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/shreeswifty/32/790_2.png) [@shreeswifty](https://forum.critterandguitari.com/u/shreeswifty)\
**Post date:** [May 1, 2017, 11:25pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/2 "2017-05-01T23:25:05Z")

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okay after first pass it looks like there may be some really useful externals i can use.

Rather rapidly i was able to make a Spectral Morphing Wavetable sampler  
One input is the live input into the Organelle and the other is a Wavetable oscillator that can be played with the playing keys. The Sampler has delay and flanger and it sounds kind of nice so far

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**Author:** ![shreeswifty](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/shreeswifty/32/790_2.png) [@shreeswifty](https://forum.critterandguitari.com/u/shreeswifty)\
**Post date:** [May 2, 2017, 12:08pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/3 "2017-05-02T12:08:44Z")

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I made Bashfest as a first test, check it out and let me know if you like how it sounds

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**Author:** ![Wannop](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/wannop/32/328_2.png) [@Wannop](https://forum.critterandguitari.com/u/Wannop)\
**Post date:** [May 2, 2017, 5:22pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/4 "2017-05-02T17:22:25Z")

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It sounds absolutely fantastic. Crazy - scrambling surprising rhythms and warped sounds. Not something i ever expected from the organelle when i bought it. There is a bleeping artefact, constant no matter what changes i make by pressing keys though is this something that can be removed or just part of the patch? Also - like some of your other incredible rhythmic patches i’m yearning for midi sync - in a dream world with a sync multiplier settings like 1/2, 1/4, 1/1, 2 like on volcas and stuff (but thats just getting greedy). Lots of your patches have very strong sense of rhythm to them, but I find it difficult to use them with other gear because of the lack of midi sync. This is a bit of a silly quibble though - as you have been more or less giving us new instruments every few days for a while now - and it’s ace.

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**Author:** ![mec1](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/mec1/32/248_2.png) [@mec1](https://forum.critterandguitari.com/u/mec1)\
**Post date:** [May 2, 2017, 9:04pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/5 "2017-05-02T21:04:22Z")

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I agree, this is waaaay cool. 😮  
Such a surprising and exciting patch. Appreciae all the thought and digital music heritage going on behind the scenes. Great to see these concepts grafted into a usable form for the Organelle.

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**Author:** ![oweno](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/oweno/32/10_2.png) [@oweno](https://forum.critterandguitari.com/u/oweno)\
**Post date:** [May 2, 2017, 10:02pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/6 "2017-05-02T22:02:30Z")

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Great to see these getting a home on the Organelle. I was lucky enough to have Eric Lyon introduce many of them to me in a computer music class he was teaching years ago! We were running them on MAX/MSP at the time, and I remember the computers could barely process the spectral objects. They are still pretty processor intensive I imagine, but it is really cool to think about using them on the Organelle.

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**Author:** ![Wannop](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/wannop/32/328_2.png) [@Wannop](https://forum.critterandguitari.com/u/Wannop)\
**Post date:** [May 2, 2017, 10:22pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/7 "2017-05-02T22:22:26Z")

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There you have it, it was meant to be!

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**Author:** ![shreeswifty](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/shreeswifty/32/790_2.png) [@shreeswifty](https://forum.critterandguitari.com/u/shreeswifty)\
**Post date:** [May 3, 2017, 2:43am UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/8 "2017-05-03T02:43:47Z")

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Wannop they are all going to get midi eventually in my plan 👣 we’re still kinda just getting going in a way.  
i’ll try to get the midiclock on bashfest

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**Author:** ![jooga1972](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/jooga1972/32/3831_2.png) [@jooga1972](https://forum.critterandguitari.com/u/jooga1972)\
**Post date:** [May 3, 2017, 7:13pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/9 "2017-05-03T19:13:29Z")

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Couldn’t agree more. All the patches @shreeswifty has been rolling out lately are simply fantastic. If they get better with MIDI sync and whatnot, this sonic heaven will be even more inspiring, and it is very much so already.

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**Author:** ![Blavatsky](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/blavatsky/32/544_2.png) [@Blavatsky](https://forum.critterandguitari.com/u/Blavatsky)\
**Post date:** [May 3, 2017, 11:26pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/10 "2017-05-03T23:26:30Z")

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Finally tried your Poisson patch today and was blown away…cool sounding evolving rhythms , noise, chaos,beautiful. Reading your background I don’t feel as shabby about my little simple patches next to your epics!

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**Author:** ![shreeswifty](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/shreeswifty/32/790_2.png) [@shreeswifty](https://forum.critterandguitari.com/u/shreeswifty)\
**Post date:** [May 3, 2017, 11:45pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/11 "2017-05-03T23:45:09Z")

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i am so glad you are enjoying them seriously that’s awesome.  
here is an experimental one with midi i am not sure it will work just yet but i think it should  
i don;t have an external midi clock to test with, will someone try this?

> **[Dropbox - Link not found](https://www.dropbox.com/s/6wjgyw4ib7a11r1/bashfest4.zip?dl=0)**
>
> Dropbox is a free service that lets you bring your photos, docs, and videos anywhere and share them easily. Never email yourself a file again!

  
i don’t want to start another instrument but i told Wannop i would try to get MIDI on this one

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<div class="post-metadata">

**Author:** ![shreeswifty](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/shreeswifty/32/790_2.png) [@shreeswifty](https://forum.critterandguitari.com/u/shreeswifty)\
**Post date:** [May 4, 2017, 1:08am UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/12 "2017-05-04T01:08:22Z")

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i think this version works  
i tested it with the midi clock coming from Novation Circuit  
You can haz MIDI. I think i can say that lets see if it works for others first

You can try to Haz midi

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**Author:** ![jooga1972](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/jooga1972/32/3831_2.png) [@jooga1972](https://forum.critterandguitari.com/u/jooga1972)\
**Post date:** [May 4, 2017, 2:17pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/13 "2017-05-04T14:17:03Z")

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wowowow, will try this tonight! bashfest with midi? holy cr\*p…

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**Author:** ![luis.costa](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/luis.costa/32/323_2.png) [@luis.costa](https://forum.critterandguitari.com/u/luis.costa)\
**Post date:** [May 4, 2017, 8:37pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/14 "2017-05-04T20:37:30Z")

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I confirm that it works! Awesome work @shreeswifty!

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**Author:** ![Wannop](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/wannop/32/328_2.png) [@Wannop](https://forum.critterandguitari.com/u/Wannop)\
**Post date:** [May 4, 2017, 9:03pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/15 "2017-05-04T21:03:14Z")

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🙌 Big up shreeswifty! Sync timed and aligned perfectly to my midi sequencer. Ace. Need to send you an audio sample of my output from this patch as it didn’t sound like others are getting this bleep from the samples as they play like I am.

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**Author:** ![jooga1972](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/jooga1972/32/3831_2.png) [@jooga1972](https://forum.critterandguitari.com/u/jooga1972)\
**Post date:** [May 5, 2017, 10:14am UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/16 "2017-05-05T10:14:43Z")

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Yes, it works indeed! 🙂 Tested it with the OP-1 sending clock to the Organelle, all is dandy. Will make some clones of this patch with different soundsets. Because what can be better than weird? Weirder, of course. 🙂 Thanks Swifty for yet another awesome patch!

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**Author:** ![anttumad](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/anttumad/32/5998_2.png) [@anttumad](https://forum.critterandguitari.com/u/anttumad)\
**Post date:** [May 9, 2017, 9:35pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/17 "2017-05-09T21:35:10Z")

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Thanks a lot!  
I’ve made my own wish compilation of your list.

So nice posibilities…  
Thanks a lot again for all your efforts and the pleasure!

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**Author:** ![anttumad](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/anttumad/32/5998_2.png) [@anttumad](https://forum.critterandguitari.com/u/anttumad)\
**Post date:** [May 9, 2017, 9:35pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/18 "2017-05-09T21:35:49Z")

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Forgot to include the list, hahahah:

presidency~ a spectral sampler with pitch control  
residency~ a spectral sampler useful for time scaling  
quadpan~ pan an incoming sound within a quadraphonic plane  
sarec~ sample accurate recording  
splitbank~ split an incoming sound into complementary, independently tunable spectra  
pvoc~ an additive synthesis phase vocoder

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<div class="post-metadata">

**Author:** ![shreeswifty](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/shreeswifty/32/790_2.png) [@shreeswifty](https://forum.critterandguitari.com/u/shreeswifty)\
**Post date:** [May 9, 2017, 10:35pm UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/19 "2017-05-09T22:35:54Z")

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anuttumad, unfortunately the FFTease objects are ALL a no go they want too much resource.

i will try splitbank~ though that looks good

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<div class="post-metadata">

**Author:** ![oweno](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/oweno/32/10_2.png) [@oweno](https://forum.critterandguitari.com/u/oweno)\
**Post date:** [May 10, 2017, 1:28am UTC](https://forum.critterandguitari.com/t/fftease-lyon-potpourri-instrument/1181/20 "2017-05-10T01:28:48Z")

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Can FFTease can be compiled to use the [FFTW library](http://www.fftw.org/), or maybe it uses this by default? I saw a compile option for Pd to use FFTW for its internal FFT objects, which I was curious about because FFTW has support for the neon extensions (vector floating point unit present on the Organelle’s processor). This should greatly improve performance for FFT related stuff, but might be a pain to get working…

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