What effects the sustain of a string?
There are many variables that effect a string’s acoustic sustain. The guitar itself, the body, the bridge, strum energy, the finger pressure on a fret, and the neck all play a role. If we are only looking at the vibrational properties of the string. Acoustically, the string’s mass per unit length and tension can have the greatest effect on sustain. A higher mass will enable a greater vibrational inertia.
