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)