I was looking at those pickups a while ago, and I can't remember if it was the gk-2 or gk-3, but it didn't seem to have actual midi output, it had a special format that interfaced with other Roland hardware, so I passed. I think that the reason for the special pickup was that it had separate transducers for each string, but I think that the pitch conversion stuff happened in the other gear. It was a couple months ago that I was reading about it, so I may be a bit fuzzy. On Tue, Jan 18, 2005 at 10:04:45PM -0500, Brett McCoy wrote: > Spencer Russell wrote: > > >I've been thinking that a pitch-to-midi converter would be a > >handy tool for those of us who play instruments other than piano. > > There are guitar pickups that can do that, like the Roland GK-2 and GK-3 > series. There are also wind and voice controllers also! Again, these are > all hardware based. You've got your work cut out for you if you want to do > this in software -- but we have software-based guitar tuners, so... > > -- Brett