ChucK Guitar Effects

Inventor

A while back we had a thread about guitar effects programs for ChucK. Kijjaz and I wrote some code, attached, that does freaky things with guitar input and makes really kewl sounds.

I'm posting because I'd like to start doing some guitar jams on The ChucK Show using such guitar effects programs, and I was wondering if anyone would like to take a shot at creating some more. Or if you're busy or don't have a guitar, I wonder if you could suggest some possibilities for me to convert into code.

Please let me know what your thoughts are on this topic, I'm eager to develop a collection of really kewl effects for the show. Thanks.

Les

Primal2.ck

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Primal2.ck

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Kijjaz_Trancey1.ck

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Kijjaz_Psychedellic1.ck

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Kijjaz_Evolver.ck

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wmonk · Posted: Wed Jun 17, 2009 8:22 am Post subject:

Cool idea Inventor! Perhaps you can send me some guitar files to use the effects on. That way I can do some effects, without destroying my soundcard by plugging my guitar into the mic input Wink

The effect of the effects would be clearer when using the same guitar for programming.

Inventor · Posted: Wed Jun 17, 2009 8:26 am Post subject:

Inventor · Posted: Wed Jun 17, 2009 9:27 am Post subject:

wmonk,

Here is a file for your testing purposes. Thanks for giving this a try.

Les

wmonkGuitar.wav

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File for wmonk, just me talking and playing bad guitar

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wmonk · Posted: Wed Jun 17, 2009 2:19 pm Post subject:

Well, got some things done. The UAna's are great for some effects. Now time to find my microphone to test it with my own voice. Will update this post soon! Smile

Inventor · Posted: Wed Jun 17, 2009 2:27 pm Post subject:

Gee Thomas, I didn't know you could speak guitar! Haha, just kidding. I just got the idea to try summing the output of delayed versions of the input signal for an interesting effect. Maybe I'll get time to try it tonight.

Les

wmonk · Posted: Wed Jun 17, 2009 4:04 pm Post subject:

The idea was to post a MP3 file here with the files demoing, but couldn't find the mic.
Number 001 is more or less a chorus like effect, it brightens the signal.
Number 002 sounds like a bitcrusher, I like it. I did some modifications to create the others:
Number 003 is dark, Number 4 is more like waterdrops.

20090617-guitareffect001.ck

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20090617-guitareffect002.ck

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20090617-guitareffect003.ck

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20090617-guitareffect003.ck

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20090617-guitareffect004.ck

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20090617-guitareffect004.ck

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mrcold · Posted: Thu Jun 18, 2009 10:42 am Post subject:

hey..
these are awesome Smile

I am working on a project and stuff like this is EXACTLY what I need.

Antimon · Posted: Thu Jun 18, 2009 11:09 am Post subject:

There's always the old oscillator sync trick. Actually it wasn't as simple as I first thought, since I misinterpreted the sync input on SinOsc. Change the channels on adc and dac to your liking (I need to do it like this to get it to work with my Motu):

Inventor · Posted: Thu Jun 18, 2009 7:21 pm Post subject:

I'm gonna check that out later, Stefan. I downloaded it and changed the ADC and DAC lines, now I just have to test it.

Here is a multiple delay line effect. It just has a chain of delays in series that are all summed into the dac, so it soundsoundsounds likeikeike thisisis sort of. Change the two parameters at the top of the file for different delay and number of delays.

Les

MultiDelayGuitarEffect1.ck

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multiple delay line effect

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MultiDelayGuitarEffect1.ck

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Kassen · Posted: Fri Jun 19, 2009 4:15 am Post subject:

Inventor · Posted: Sat Jun 27, 2009 8:16 pm Post subject:

i just entertained rob and jan and mrcold with the attached guitar synth. It's by kijjaz as posted earlier in this thread, but i added a delay line feedback loop which really makes it super psychedellic.. or should i say psychodellic, with an o! wow man.

Kijjaz_Psychedellic2.ck

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Kijjaz Psychedellic Guitar Synth

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Inventor · Posted: Sun Jun 28, 2009 3:09 am Post subject:

I got to thinking about that last posted code, KijjazPsychedelic2, while in chat and it occurred to me that I could create a hardware feedback loop instead of a software one. So I just moved the delay line to the output and now I'm waiting for morning so I can hook things up and jam.

You see, I have a special cable that runs from the eMac's headphones output to the guitar amp's CD player input. I just attenuate the signal in software and then a feedback loop will be established.

Guitar input will get sounded by the amp, and then the eMac's microphone will pick up the guitar and my voice, go all psychedelic on it, and send that back to the guitar amp. This process repeats so that many images of the sound are present at any one time.

What's so cool about this is that it will fill my living room with the psychedelic sounds instead of just being on the headphones as in the past.

I should be able to control the amp gain and the eMac volume to establish any desired level of effect. Wish me luck. If it works, I may do it on the ChucK show.

Les

Inventor · Posted: Tue Jun 30, 2009 9:28 am Post subject:

I tried the experiment in the previous post and there was too much room noise in the feedback loop. The noise took over the signal so it didn't work right. What I did discover, however, is that the feedback loop, even in software is unnecessary. I made several guitar synths and went back to KijjazPsychedelic1.ck because the original was the best.

Then I modified it to receive input from my homemade little guitar mixer thingie. It puts the mic on one channel and the guitar on the other, amplifies them accordingly and sends them in on the left and right channels of the line in jack. I set the code up to psychedelically process the voice and pass the guitar through with only some software gain.

With this configuration I still get the star-sparkling woo woo noises in response to the voice, but the guitar comes through clean. Should be useful in the ChucK show...

Les

Kijjaz_Psychedellic5.ck

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Latest and best version of Kijjaz Psychedelic (for my use)

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