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.
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.