Install libopus-ocaml-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libopus-ocaml-dev
OCaml interface to the opus library -- developpement files
This package provides an interface to the opus library for OCaml programmers. . The Opus codec is designed for interactive speech and audio transmission over the Internet. It is designed by the IETF Codec Working Group and incorporates technology from Skype's SILK codec and Xiph.Org's CELT codec. . This package contains all the development stuff you need to develop OCaml programs which use ocaml-opus.