thread starter maybe this is similar to the post below,
but i'm trying to design a guitar stompbox that basically uses the strumming or plucking of the instrument to trigger the record/playback function. the loop time is preset to a fixed length (always very short) as dictated by a knob. I have some experience with DIY pedals, but only modulation types, nothing like this. SO I'm at a loss where to start. can anybody help with either schematics, ideas, resources or contacts? in the meantime i'll just check out some of the ideas suggested in the last post.... thanks Replies
it's hard. to do it with good sound quality you'd need a DSP platform. and there's none that's affordable. at least i found none, but if somebody has any hints i'd be glad to know about it as well...
there's the tonecore of line6 but that just does not work as expected unless you buy an additional c-compiler for $$$ or program in assembler. both is not an option for me. you could always go the lo-fi way. there are a couple of examples with arduino or propeller. i think the small v-machine is released. but i read it's not really compatible with all vst-plugins.
well there's the beagle board, maybe it could be usable. it's not really a DSP platform but a very small multimedia capable linux board: link i am not sure about the realtime capabiities... i think the small v-machine is released. but i read it's not really compatible with all vst-plugins. oh, indeed. Interesting. Thats probably close then to being a C-programmable dsp platform at a not-so-expensive price. It not running all vsts is to be expected i guess... and also not really a problem if youre looking for something to run your own creations Finally released: link
yes, the tonecore stuff is released but it doesn't work as advertised. i got one but you can't program it in C. it just doesn't work.
I guess you'd prefer not to use a laptop-based way of doing this, but ive been looking at ChucK lately and the LiSa UGen would be a nice way of doing this.
Standalone vst box, that's quite interesting.
I'm trying to avoid code, i suck at it, and it scares me. got some arduino hack friends maybe I could twist their arm. Lo-fi is probably the way I've actually found some cool links along these lines. this one's a RAM based looper. Not sure about the specifics, but so far this guy's breadboard prototype is sounding solid. Video&feature=player_embedded also, here's something similar, i think. this guy's making kits for his 8bit sampler looper. midi compatable, there is a microcontroller here. link anyone seen arduino examples of this? oops, bad link above.
i try again link/watch?v=VrRZUsdq6lw&feature=player_embedded you could always go the lo-fi way. there are a couple of examples with arduino or propeller. no need to go lofi with arduino  you could probably run 16bit/44khz converters I guess the issue would be memory and perhaps 44khz would be a struggle..I dunno what you would classify 'affordable' though, an arduino project like that can quickly get up to like $100 once you case it, add interface controls, etc. I haven't seen any looper modules with arduino, but there are audio input/playback (voice recorder etc) and sample playback projects.. adafruit waveshield might be a good start, switch the 12bit DAC for a better one if you like. I was actually thinking about building something along the lines of digital/sample based modular modules out of arduinos.. but I've not done much research on it yet so wont be any help to you.. cartesia said: " you could always go the lo-fi way. there are a couple of examples with arduino or propeller." no need to go lofi with arduino you could probably run 16bit/44khz converters I guess the issue would be memory and perhaps 44khz would be a struggle..i am not sure if you can handle the data stream in realtime with an arduino. maybe with an arduino mega. you'd need to calculate it beforehands and maybe use assembler... Signup to comment
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