Other forms: synthesizers
A synthesizer is an electronic keyboard that can make any sound. A vintage synthesizer, play the synthesizer, a modular synthesizer.
It builds a sound from scratch rather than recording one, which is what separates it from a sampler. The controls that shape how a note starts and fades are the attack, decay, sustain and release, and those four settings do most of the work.
1nounsynthesizerAn electronic keyboard that can make any sound.
“The band's keyboard player used a synthesizer to create strange space-age sounds.”
synthesizer is an instrument.
From synthesize + -er.
Etymology from Wiktionary, CC BY-SA