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dbfsd - DB Fourier Synthesis Daemon


dbfsd [options]


The audio daemon dbfsd serves as the backend part to the DBMix-project. It allows to
connect several audio streams and combines them into one, using high quality Fourier
synthesis. Connections currently transfer data via pipes; a network (socket) connection
method is being developed, but not yet included. Use dbcat to push audio streams into
dbfsd. The mixer settings are controlled via dbmixer.

Dbfsd actually can handle two different output destinations: one is the master device,
usually used for the main output; the second one is referred to as the cueing device,
which is handy for so-called pre-fade listening. That is, one can check the starting
position of the next song, or adjust its pitch before sending it to the main output.
Obviously, for stereo output to both the master and the cueing device, two sound cards (or
a sound card with two distinct output channels) are needed. The -e switch offers a way to
cue with only a single sound card, but output is reduced to mono streams.


-a dev Set master output device to dev. (Default: /dev/dsp.)

-b dev Set cue output device to dev. (Default: /dev/dsp2.)

-c Enable cue output. (Default: cueing disabled.)

-d Print out debug messages to console. (Default: debugging disabled.)

-e Output cue as left channel of master out. This option also enables cue output even
if -c is not set. (Default: cue to both channels of cue output device.)

-h Print summary of available options.

-n max Allow at most max input channels. (Default: 4.)

-o Send master output to stdout. (Default: send output to master output device.)

-r n Set number of OSS output fragments to n. Decreasing this number will reduce
latency between, say, starting dbcat, and hearing the results of that action. Too
low a value, however, will results in drop-outs in the stream. This value can also
be adjusted via the preferences dialog in the dbmixer application. (Default: 128.)

-s n Set number of input channels that should be created as sockets to n. (Default: 0.)

-v Print version information. (Default: no version information.)

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