Thursday, November 6, 2014

Roland GR-20 Guitar Synthesizer Experiment Underway

The GR-20 powered-up and it's now cabled via MIDI to a Korg synth.  This is toward setting up the Big Experiment as to whether accurate MIDI translation will get through to the synth via the GR-20.

What I know right now is using the GR-20 alone means it will not hear some strings and unpredictable behavior would come from the others.

My suspicion all along is that the cable from the guitar to the GR-20 is no good but no chance I would spend sixty to eighty bucks without knowing it for sure.

So, onward with a test.


(A short while later)

Only three strings are sounding but they did make it through the GR-20 so everything looks at a bad cable from the guitar to the GR-20.  It wasn't worth the money before but now it is.

Starting points for maniacs:

Set a clean electric guitar sound and set a sweep string voice on the synth.  Strum a chord on the guitar and you will get the fast attack from it but that fades while the sweep from the synth fills out behind it.

The three working strings were enough to see what happens if I play note patterns on the guitar while the synth is set up with an arpeggiator that will trigger from whatever I note I play.  Doing this is what sells the cable.  It's magical.

MIDI from the guitar hasn't worked in so long that all my focus has gone into getting the best sound I can from the xtSA and I discovered its sound is even better than I thought it was.  Now I can add a whole range of voices to its sound and then it goes to another dimension.

These may sound like tricks when I write but they don't when I play.  Just now brought it all back to me how good it can sound doing that.  I must have this back!


In musical effect, this is like playing very complex unisons with a keyboard player ... but ... it isn't the same thing.  The fact that it's two people changes the music as a single person with a guitar synth isn't concerned about staying in sync with anything but the beat, the sync will be be there if the MIDI pickup is any damn good.  (MIDI translation on a Godin guitar is fast and accurate)

A sweep is the kind of sound that builds and fills and swells.  You can hold a single synth chord and let it fill an entire auditorium.  A guitar really isn't the instrument for a sweeping sound as it's almost percussion insofar as you pluck a string to make a sound.  That plucking action is necessarily a sound with a fast attack with a decay based on the characteristics of the instrument.  With that played over something with a very slow attack, it makes for a fascinating change in the sound without changing the pitch and the combination is very, very rich.


So, I'm most pleased.  This is good enough testing to be satisfied it really will live again once I can snag that cable.

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