mididings

mididings is a MIDI router and processor for ALSA or JACK MIDI. It's implemented as a Python module, thereby offering a powerful and flexible means to set up patches, while the actual MIDI processing code is written in C++.

Features:

• Filtering and routing of MIDI events depending on event type, channel, note, etc.
• Transposing notes, modifying velocity, changing controller values/ranges.
• Converting one type of MIDI event to another.
• Some more complex MIDI processing functions, including a diatonic harmonizer.
• Seamless switching between patches, with no dropouts or stuck notes.
• Running arbitrary Python code to process MIDI events.
• Support for ALSA sequencer and JACK MIDI.