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.

                                          July 23, 2002                                  DBFSD(1)