PolyPortamento is a VST 3 plug-in designed to enhance the expressive capabilities of MPE synthesizers by enabling polyphonic portamento. While many MPE synthesizers support pitch bend across multiple MIDI channels, their implementation of portamento and legato functions often remains limited. PolyPortamento addresses this gap by providing a seamless way to apply portamento effects polyphonically.

Operating as a MIDI processor, PolyPortamento sits between a MIDI track and an MPE-compatible synthesizer. It converts incoming MIDI Note On events into a series of pitch bend changes on a per-channel basis, allowing smooth transitions between notes across multiple voices. This approach enhances the natural fluidity and expressiveness of performances, making it especially valuable for musicians who rely on detailed pitch articulation.

Designed for 64-bit Windows 10 and later systems, PolyPortamento integrates easily into digital audio workstations that support VST 3 plug-ins. By expanding the standard capabilities of MPE synthesizers, it opens up new creative possibilities for producers and performers seeking richer, more dynamic soundscapes through advanced MIDI control.