<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">On Mar 4, 2006, at 9:51 AM, D A F wrote:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#2100DD">Yes, I guess the problem is: What happens when you are holding one note and</FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#2100DD">then press down a second note without letting the first one up?</FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">This would not be an issue when using the MIDI-CV with a polyphonic MIDI guitar controller. Although the guitar is a six-note polyphonic instrument, guitar strings are inherently monophonic. That is to say, on a guitar, it is not possible to play two notes simultaneously on one string. Or potting it another way, you can't "press down a second note without letting the first one up". </DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Typical guitar-to-MIDI controllers (such as the Yamaha G50 and the Roland GR units) transmit each string's note information on a separate MIDI channel, which would necessitate the use of a separate monophonic MIDI-CV converter for each string. Such a system would also require hardware for six complete analog synthesizer voices. This may explain why we don't often see people using guitars as controllers for their analog synth gear.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">If you wish to use the guitar to play a monophonic analog system, you will have two choices: Either you must restrict yourself to playing on only one string, or you must re-channelize the six-channel MIDI info coming from the guitar so that it all comes out on the same MIDI channel. This could be done with some kind of external MIDI processing device, such as a MOTU MIDI Time Piece II. However, this would necessarily open up a stinky can of Pandora's Worms, in terms of some potential MIDI problems and some note and trigger assignment problems -- for instance: What happens if you play two notes at once? What happens if you play a note, then the same note on two different strings? What if you don't completely release the first note before hitting the next? Which note takes Note-On and/or Note-OFF precedence? Which note's Velocity takes precedence? What if you bend a note or notes? And getting back to the original question, what happens with triggers and gates if you press a second note without letting the first one up? ...there are other potential problems, too.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Harry Bissell has opened that can of worms many times, and has come up with various solutions for most of the inherent problems -- none of them involving MIDI, though. Check out his "Muffy" guitar to CV converter for more insight:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="http://www.bitshifted.com/SDIY2004/muffy.asp">http://www.bitshifted.com/SDIY2004/muffy.asp</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><BR class="khtml-block-placeholder"></DIV></BODY></HTML>