Install vco-plugins by entering the following commands in the terminal:
sudo apt update sudo apt install vco-plugins
Description:
LADSPA plugin sporting anti-aliased oscillators
This plugin contains three anti-aliased oscillators, all based on the concept of using precomputed bandlimited Dirac pulses to construct the classical waveforms. They are both memory and CPU efficient. The first one produces a flat spectrum (impulses) and the second generates a sawtooth waveform. The third one (new in 0.3.0), provides a variable width rectangular waveform.
Homepage: http://kokkinizita.linuxaudio.org/linuxaudio/index.html
Version: 0.3.0-5
Section: universe/sound