- Erwin Vos
- Topic Author
AftertouchA MIDI message sent from some MIDI keyboards when a key is further depressed at the bottom of its travel — in other words, you play a note and hold it and then press the key down harder to produce the aftertouch message. Aftertouch is a continuous controlling message often applied to volume or filter frequency in a MIDI synthesizer, and is applied equally to all notes listening to a particular MIDI channel. It's also called Channel Pressure or Monophonic Aftertouch. Not all synthesizers send or receive aftertouch. Aftertouch is a two-byte message.