PolyPortamento by suzumushi is a Virtual Instrument Audio Plugin for Windows. It functions as a VST 3 Plugin.
PolyPortamento is a plug-in enabling polyphonic portamento with MPE synthesizers.
MIDI Polyphonic Expression (MPE) specification is applicable to polyphonic, that is, MIDI channel-based pitch bend, as well as portamento and legato functions. However, in a large number of MPE synthesizer implementations, MPE support of MIDI functions is limited to pitch bend only.
PolyPortamento is a plug-in inserted between a MIDI track and an MPE synthesizer. It works MIDI channel basis and then converts a received MIDI Note On event to a series of Pitch Bend Changes for portamento.
PolyPortamento is provided as a VST 3 plug-in for digital audio workstations. OS environment is 64-bit Windows 10 and later.