1. A feature on electronic keyboards and synthesizers that allows a performer to modify the sound of a note after it has been struck by applying pressure to the key.
Usage: music technology; commonly used in synthesizers and digital pianos

Examples

• The synthesizer's aftertouch feature lets you add vibrato by pressing down on the key after playing the note.
• She used aftertouch to create a swelling effect on the sustained chord.
• Many professional keyboards include channel aftertouch and polyphonic aftertouch options.
• The pianist adjusted the filter cutoff using aftertouch to shape the tone dynamically.
• Without aftertouch, the keyboard felt less expressive and responsive to his playing style.