Factors Affecting Sustain
Within a family of instruments, sustain is affected by a variety of factors. For example, sustain in guitars is determined by factors including body construction (hollow versus solid), body woods, neck woods, the placing of strings (through the body or atop the body), strings gauge and pickup design.
In electric guitars, bass guitar and pianos, dedicated effects pedals are available that prolong the sustain-phase of a tone. Its counterpart in synthesizers is the S (for sustain) in the ADSR envelope.
The sustain pedal is the electronic equivalent of a piano's damper pedal. In most synthesizers, the sustain pedal latches the envelopes of any currently playing or subsequently played notes at their sustain levels, even if the keys are lifted.
Read more about this topic: Sustain
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