Install libraul-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libraul-doc
Description:
real time audio utility library -- documentation
Raul (Realtime Audio Utility Library) is a C++ utility library primarily aimed at audio/musical applications. . This package provides the documentation for raul.
Homepage: http://drobilla.net/software/raul/
Version: 0.8.0+dfsg0-0.1ubuntu1
Section: universe/doc