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automatic crackle box thing
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mi_dach



Joined: Dec 17, 2005
Posts: 133
Location: Sweden

PostPosted: Thu Jun 01, 2006 3:07 pm    Post subject: automatic crackle box thing
Subject description: looking for suggestions
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Hey,
I like the erratic, unpredictable swoopy sounds of the cracklebox. However, I'm wondering if there is a circuit that can produce something along the same lines, but automatically, without requiring human intervention... I could maybe get a pic chip to control the heavy metal xors circuit. Simpler is better though.

anyone got any suggestions?
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piedwagtail



Joined: Apr 15, 2006
Posts: 297
Location: shoreditch
Audio files: 3

PostPosted: Thu Jun 01, 2006 11:22 pm    Post subject: Reply with quote  Mark this post and the followings unread

I've got four young magpies living around my flat,they spend a lot of time playing,swooping and one flew up to a fox,startling it.I imagine you are looking for a sonic equivalent of that Smile

if you haven't caught...
http://www.ciat-lonbarde.net/paper/index.html
the great don lancaster
http://www.swtpc.com/mholley/PopularElectronics/Feb1971/PE_Feb1971.htm
and that klee sequencer
http://www.electro-music.com/forum/topic-10822.html

are all jumping boards in automatons,just need to join some dots...with the more fractously noisy circuit....

Robert
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mi_dach



Joined: Dec 17, 2005
Posts: 133
Location: Sweden

PostPosted: Fri Jun 02, 2006 6:52 am    Post subject: Reply with quote  Mark this post and the followings unread

You may be more right than you think Smile

Thanks for the links, I checked them out but they all seem quite complicated. I am trying to get a very simple circuit to do this. I think perhaps the easiest is a pic chip with some PWM output, and varying the frequency/duty cycle/on and off patterns of each output according to some preprogrammed sequences. Hopefully this will sound random enough for what I want.
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zipzap



Joined: Nov 22, 2005
Posts: 559
Location: germany
Audio files: 24

PostPosted: Fri Jun 02, 2006 12:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

If you want to go for something like the exors some random noise s&h thing controlling one osc might be enough. Add another lfo and things get even better. maybe replace one osc by some kind of random gate generator. Place a ldr somewhere. Once powerd this should never make the same sound twice (and i hope make more than one sound...).
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bugbrand



Joined: Nov 27, 2005
Posts: 846
Location: Bristol, UK
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G2 patch files: 1

PostPosted: Sat Jun 03, 2006 1:24 am    Post subject: Reply with quote  Mark this post and the followings unread

YoYo
Hows about CMOS switches to switch between a few different cap & resistor values in the XOR metal ringmod circuit.?. That should work out pretty ok!
Digi chips are ace for this -- you can use another 40106 (or similar) to generate a bunch of different (ie quasi random) trigger signals for the switches.
Or I was thinking of the digital noise gens that are recursive, but so long that you don't hear the repeat -- if you tweak you could def. get shorter quasi-random but vaguely repeating signals.

The current Weevils (very much along the same lines as the heavymetal xor stuff) are quite like crackleboxes in their behaviour.!. I think we need to get into genetics actually and clone little people that can stand on touchplates - maybe breakdancing? ((this sounds like a drunken idea, but actually its 9 in the morning..))

_________________
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http://www.bugbrand.blogspot.com
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mi_dach



Joined: Dec 17, 2005
Posts: 133
Location: Sweden

PostPosted: Sat Jun 03, 2006 2:35 am    Post subject: Reply with quote  Mark this post and the followings unread

thanks guys for the suggestions, I'm starting some experiments now Smile I'll let ya know how it goes
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