Dexed (plugin) · Pixelquencer

Web MIDI page for the free Dexed FM synth plugin (DX7 emulation). Mod wheel, breath, foot, portamento and sustain are fixed in Dexed's MIDI code; a 34-knob MIDI learn bank covers the patch parameters. Send to a virtual MIDI port (IAC Driver on macOS, loopMIDI on Windows) and route it to the plugin in your DAW. Chrome or Edge · HTTPS or localhost.

Channel setup

Keyboard

Octave

Velocity 100

Random note

Click or drag keys to play. Computer keys: A S D F G H J K L ; (white) and W E T Y U O P (black). Last played note can fill a sequencer step.

Sequencer

Tempo

Steps

Gate 60%

Random 0%

Other pages Sync with other pages

Sync with other pages: starting.

Click a step to toggle rest / note. Shift-click or use “Set from keyboard” after playing a key.

Last message: none

Sources: Dexed source code by Pascal Gauthier (asb2m10), https://github.com/asb2m10/dexed at commit fea2f0f0f2c397799f59b27eb11c038cd34b22c5 (October 15, 2026): source/midi/PluginMidi.cpp control change handling (1 mod wheel, 2 breath, 4 foot, 5 portamento time, 64 sustain, 65 portamento on, 120 and 123), source/midi/MidiCCHandler.h (MIDI learn), source/ui/util/ContextMenuAdapter.h (Assign parameter to Midi CC), parameter names from source/parameter/DexedApvts.cpp and MetaParameter.h. Mod wheel, breath and foot act only as far as the patch routes them. The learn bank (CC 16 to 31, 102 to 119) does nothing until learned. Panic sends Note Off, All Notes Off (123) and All Sound Off (120); Dexed handles both.