PulseAudio is a sound server that provides a high-level API for audio applications. It is designed to be flexible and portable, and it supports a wide range of audio hardware. PulseAudio can be used to route audio between applications, and it can also be used to apply effects to audio streams.
PulseAudio is not pre-installed on Chromebooks, but it can be installed from the command line. To install PulseAudio, open a terminal window and enter the following command: