Thanks gents for the excellent info. I'll just throw the all of the info into this reply:
> Keyboard is an M-Audio Code 49 with latest firmware
> For sample below, used Kontakt Player - Jazz Guitar, with PG Dynamics effect.
> MIDI note resolution - not able to find it in the docs or manufacturer side.
> MIDI Pitch bend wheel - Range set from 0-127. The range is approx. but not exactly +1/-1 semitone at the two limits. I've tried changing the range but that forces the tone bend into too narrow a range (in my experiments).
> I think Bob Calver has an interesting idea - it does seem to be easier to bend from the limits back down to the center detent. I will definitely try that. A bit of that is in the sample.
> The bends recorded here were primarily upward, since I figured most of the bends on the guitar strings will be moving the note up.
> Warning: This sounds really bad but I was trying to demonstrate the different bend actions when I moved the wheel in different ways. No matter what I try, there seems to be a wonkiness in the bend response. If I try to move it really fast, and keep it near the max and stay away from the middle, it seems less wonky.
> I play guitar a little bit, so I have some direct experience with bending on an acoustic.
> I know there is a control for Pitch Bend Sensitivity(RPN) on my controller, but it's not clear to me how it would be set or how it would work. I've tried adjusting it with no noticeable effect.
Guitar Bend Sample - Jazz Guitar