Digital audio mixing system
The DBMix system is able to combine sound from various sources into a single audio stream. Think of it as a virtual DJ mixing desk. Mixing uses a Fourier synthesis algorithm to maintain sound quality in the output stream.
The dbfsd daemon serves as DBMix's backend--that's where most of the real synthesis work is done. Several clients allow to connect different audio sources to the backend. dbin links line-in, or microphone input from the sound card to DBMix. And there's dbcat, a pretty generic tool that redirects its standard input to a dbfsd channel. Actual DJ work is done using the graphical frontend dbmixer.
For an in-depth description of each application, see its respective man page.
This manual page was written by Daniel Kobras <[email protected]>, for the Debian GNU/Linux system (but may be used by others).