ventosus.ch

PatchMatrix

a JACK patchbay in flow matrix style

A simple graphical JACK patchbay that tries to unite the best of both worlds:

• Fast patching and uncluttered port representation of a matrix patchbay
• Excellent representation of signal flow of a flow canvas patchbay

It additionally features tightly embedded graphical mixer clients automatable with JACK MIDI/OSC.

Packages

• ArchLinux

Mouse actions

Canvas

• Middle button + move: move canvas
• Right button: open context menu

Client

• Left button + Ctrl + move: move client

Grab handle

• Left button: connect clients w/o connecting ports within
• Left button + Ctrl: connect clients and ports automagically

Mixer

• Left button + move: change gain coarse
• Wheel: change gain coarse
• Left button + Shift + move: change gain fine
• Wheel + Shift: change gain fine
• Right button + Ctrl: remove

Monitor

• Rigth button: remove

Matrix

• Left button: toggle port connection
• Left button + Ctrl + move: move matrix
• Wheel: toggle port connection
• Right button: remove and disconnect all ports

Automation

MIDI

PatchMatrix mixer clients (AUDIO + MIDI) each have an additional JACK MIDI automation port through which users can automate mixer matrix gains sample-accurately.

Currently, users have to send multiple MIDI messages for a single gain change in a stateful transactional manner.

• NRPN-LSB: set index of sink port column (optional)
• NRPN-MSB: set index of source port row (optional)
• DATA-LSB: set lower 7 bits of gain (optional)
• DATA-MSB: set higher 7 bits of gain (mandatory)

DATA-MSB finalizes one transaction and sets gain to new value for currently set sink/source port indexes.

OSC

PatchMatrix mixer clients (AUDIO + MIDI) additionaly support JACK OSC automation through which users can automate mixer matrix gains sample-accurately.

/patchmatrix/mixer iif (source index) (sink index) (gain in mBFS [-3600,3600])

Dependencies

Runtime

• JACK (JACK audio connection kit)

Buildtime

• LV2 (LV2 Plugin Specification)

Build / install

git clone https://git.open-music-kontrollers.ch/~hp/patchmatrix
cd patchmatrix 
meson build
cd build
ninja -j4
sudo ninja install

Issues/Patches

Please report issues to https://todo.open-music-kontrollers.ch/~hp/issues

Please submit patches to https://lists.open-music-kontrollers.ch/~hp/patches