#1
I'm working with the left-handed warmup exercise #1 from Joe Petrucci's Rock Discipline e.g.:

-------13------13-------10------10-
-----12------11-------11------12---
---11------12-------12------11-----
-10------10-------13------13-------
-----------------------------------
-----------------------------------


I'm getting a lot of string noise when changing fingerings and I'm really not sure what to do. Specifically I guess my finger sort of does a pull-off or otherwise sticks to the string as I'm changing a position and I'm getting a lot of unwanted sounds!

Is it my technique? Is it my gear? Is it the speed at which I'm playing that makes it noticible?

If technique -- is it just a matter of dampening the strings when I release a position - allowing the string to raise off the fret cleanly (straight up) *and* holding the string so it no longer vibrates? <-- if so I think it's going to take me a ton of practice JUST doing this for a while.


(I'm not sure if any of this helps)

I've been playing very regularly for maybe about 2 years but until now I've been spending the majority of my time sliding power chords to stuff such as Metallica & Slayer. I can hold my own there but give me some simple chord stuff or clean sounds and I'm a beginner.

I'm playing on a Schecter C-1 Hellraiser with EMG 81/85s ... for this I'm playing the top pickup through some clean effects on a ToneWorks AX1500G to headphones. I'm not sure if this even makes a difference to what I'm asking! Maybe my fingering should not produce any string noise regardless?

My fretting hand is in what I think is considered a classical position with the thumb sitting at the crest of the back of the neck and my fingers curled over the strings.
#2
It's your technique, but that exercise is just to stretch your muscles. If you're really into sharpening your technique, then you can work on cutting down the string noise; but otherwise I wouldn't say that it matters.