NAME¶
dbfsd - DB Fourier Synthesis Daemon
SYNOPSIS¶
dbfsd [
options]
DESCRIPTION¶
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.
OPTIONS¶
- -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.)
FILES¶
- /tmp/chn_comm
- Pipe to input channel n. Direct use of the pipes is
deprecated, use dbcat instead. The pipes expect audio input in
unsigned 16bit PCM format at 44.1kHz.
SEE ALSO¶
dbcat(1),
dbin(1),
dbmixer(1),
dbmix(7).
AUTHOR¶
This manual page was written by Daniel Kobras <kobras@debian.org>, for the
Debian GNU/Linux system (but may be used by others). It is heavily based on
DBMix's README file written by Robert Michael S Dean.