Build-up audio effects with looper function. The idea behind this plugin is driven by EZBot's Performance mixer for the Octatrack, where the device is used as a complex effect's chain for transitions during live performances.
When you start the bpm synced looper, the looped audio could be send through a sequence of effects:
- Distortion (Frequency shifter, Distortion, Wavefolder)
- Amplitude modulation (Stutter, Ping pong stutter, Panning of stereo signal)
- Filtering (Low pass, High pass, band pass, notch, flanger, phaser - could be used parallel)
- Delay (adjustable ping pong)
- Reverb
These effects are modulated during a build-up sequence, the length of which can be choosen. The result is for example a closing low pass filter loop which is closing during the length of the build-up. Mostly usable for transitions, because the looper plays instead of the original signal, and you can change the instrument parameters of the original signal during the transition. At the end of the transition you switch back to original sound.
You also can add on some sort of extra audio source to the build-up loop, for example a low cut noise, to add some more interest into the build-up.
It's very possible to just use this patch in a regular pd or plugdata environment. No extra pd libraries are needed, it's hvcc safe.
The most easiest way is to use plugdata. You can download it from https://plugdata.org/ . Load the Perfomix.pd patch and compile as described on their website. This is available for different environments and is preferable for regular users.
Because at the moment plugdata does not have a arm64 export mechanism, it is necessary to compile the plugin for the raspberry pi OS on the command line. Compilation on the command line involves some basic understanding of directories and text editing. You also need git.
Deactivate Zynthian's virtual python environment!!
deactivate # deactivates the actual zynthian virtual python environment
Choose a directory for the source
mkdir src
cd src
Clone 2 repositories - the source of the patch and a script collection to compile a pd plugin with hvcc.
git clone https://github.com/gitnob/pd_to_zynthian_oram.git
git clone https://github.com/gitnob/Perfomix.git
Initialize for compilation.
cd pd_to_zynthian_oram
bin/initialize_lv2_dev.sh # takes some time to download the development environment for hvcc
ln -s $PWD/../Perfomix pd/Perfomix
Compile by using the Perfomix specific config.sh file
bin/compile.sh -c pd/Perfomix/perfomix.sh
Copy custom manifest.ttl files into newly generated lv directory
cp pd/Perfomix/*.ttl $PWD/gen/bin/Perfomix.lv2
Link (or copy) the Perfomix lv2 plugin into zynthian's plugin directory
ln -s $PWD/gen/bin/Perfomix.lv2 $ZYNTHIAN_PLUGINS_DIR/lv2
or
cp -r gen/bin/Perfomix.lv2 $ZYNTHIAN_PLUGINS_DIR/lv2
Activate Zynthian's virtual python environment again!!
source $ZYNTHIAN_DIR/venv/bin/activate
Update the engines in webconf and toggle Perfomix. Restart zynthian.