QUOTE(fun_feng @ Jul 24 2009, 02:44 PM)
I have a question also
In a tab, there are cases where I see
--------\12--------
From what I see in youtube, they play it by sliding from way above.
The question is do they pick this while sliding? And start from which note??
What is the effect of doing this?
I saw this quite often, they play halfway, then slide all the way up and down again :s
you are correct in what you saw - sliding from way above, maybe from 24 or 22 depending on the guitar's length, and your preference. the starting point is actually insignificant from the listeners' point of view so as you will put more emphasis on the note indicated in the tab.
you treat this as a single note (whether be in an eighth note or a quarter note or whatever, depending how the tab was written). if you try to write this in a musical score, this should appear as a
glissando (gliding of pitch). basically the effect would be a quick slide from one note through notes in between down to the indicated note in the tab. an example of a glissando can be done in a piano wherein the musician slides his/her hand through the notes (though in the piano, it's almost always that you only hit the white keys, thus using only the C-major scale). same concept for the guitar, only here you go through frets, thus hitting ALL notes going through half steps (sharps and flats).
i hope this helps.