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Guitar Synth

Synthesised guitar
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On a guitar, to my knowledge, the frets and the strings are both metallic. If you were to set up a low voltage on the frets and earth the strings you would be able to register which string is being pulled to which fret.

By analysing this you could have a synthesiser set play the correct corresponding note at the volume registered by the pickup.

This would also allow you to play a different instrument on the guitar (it would act like an electric keyboard) or have different guitar sounds (eg accoustic or different makes of guitar) from the same guitar.

Because it is reliant on the connection and not the note played the guitar would also not need to be tuned.

miasere, Oct 24 2005

Not like this: http://www.line6.com/variax/
but this is pretty cool anyway. [wagster, Oct 24 2005]

Hot Chocolate - Every 1's A Winner http://uk.youtube.com/watch?v=TNFi16-wyKQ
[Ian Tindale, Dec 19 2008]

Someone mention robots? http://www.moonmilk...humpbot-play-crazy/
[Ian Tindale, Dec 19 2008]

MC-202 on iPad http://youtu.be/L4W1iBkWWIk
Not guitar synth related, just a quick synth related video I made the other day to test some horribly bad colour rendering video LED panels (pair of CN-160) (hence my face in black and white, it rendered skin so badly). [Ian Tindale, Jan 24 2015]

[link]






       My guitar synth works differently (a Roland GI-10). It has a hexaphonic pickup, and generates midi data from each single string's signal (and into six separate midi channels). Your scheme doesn't make it easy to extract bend information, whereas my GI-10 separates each string's bend information (and other handling mess) into completely separate pitchbend messages per string.   

       During the '70s, experiments were tried along the lines you suggest, but were soon abandoned in favour of information extraction directly from separated string signals. By the time of the first commercial midi guitars (typically the Roland GR series) these did, I believe, have fret information (whereas current ones dispense with this) as well as pickup information for the conversion process (which in those days was pre-MIDI, and controlled a fairly nifty Roland analogue synth not dissimilar in capability to a SH5).   

       The competing Arp Avatar (which had a dedicated synth that was pretty much exactly like an Arp Odyssey but without the keyboard) (and was mostly to blame for the collapse of Arp as a company) was entirely a retrofit to existing guitars in the form of a separate hex pickup and processor (the processor is part of the Avatar unit), and before long, this is also the route that Roland were to take for their future guitar synth products.   

       By the way, hits from back in the day, featuring those synths: The Who had various hits heavily featuring the Arp Avatar (at least one is currently recycled into the theme for some prominent American prime-time fictional forensics show) and on the Roland side, Hot Chocolate's Every One's A Winner pivots musically around an early Roland GR (GR300? GR500? I forget).
Ian Tindale, Oct 24 2005
  

       Vox did this in 1966. The Guitorgan was a Vox Phantom with the guts of a Vox Continental organ built into it, triggered exactly as you describe. It was mains-powered. They were unreliable and unpopular, and Vox only built eighty (I have one of them). Godwin did the same around 1976.
My Casio MIDI guitar works similarly to [Ian]'s Roland.
angel, Oct 24 2005
  

       How about a robotic guitar you can hook up to a keyboard or other input source?
Spacecoyote, Dec 19 2008
  

       Dedicated MIDi guitars like those from Casio used the frets, wheras the Roland use one pickup per string.A good example of MIDI guitar can be heard on Thomas Dolby's "keys to her Ferrari" Back in the 1970's Vox produced an organ guitar, which i've never heard.they're extremely rare. Alternatively play a synth using the handy keyboard
giligamesh, Dec 22 2008
  

       [Ian] Awesome (second) link! I'm planning on ordering an Arduino controller; I think you've just given me a new hobby.   

       Even though this is baked, I would be proud to have thought of it independently. It would make a nice DIY project.   

       You haven't explained how plucking would be detected; using a metallic pick or bare fingers, the slight current drain could be detected on contact, like the way some lift buttons work. [edit] Sorry, wasn't thinking; the string-stopping fingers would have the same effect. You would prolly need a metal pick with a wire attached to it.
spidermother, Dec 24 2008
  

       Actually, last year I bought JamOrigin’s MIDIGuitar app on OS X and also on iOS, and consequently took my Roland hex pickup and controller off from my left-handed Hohner G3T guitar. It’s more or less as good as the Roland hardware was, and in some cases better.   

       Also, today Korg announced their re-release of the Arp Odyssey synth (in mini-key size).
Ian Tindale, Jan 22 2015
  

       and Yamaha gave DSI the Sequential name back, apparently instigated by Mr Takahashi, so I might just partially forgive Roland a deliberate circle-jerk their repair centre visited on me.
FlyingToaster, Jan 24 2015
  
      
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