dbin(1) [debian man page]

DBCAT(1)						      General Commands Manual							  DBCAT(1)

NAME

       dbin - Connect sound card input to DB Fourier Synthesis daemon

SYNOPSIS

       dbin [options]

DESCRIPTION

       The  dbin tool allows to connect a sound card's input channel to dbfsd.	Both dbin and dbfsd are part of the DBMix project, a digital audio
       mixing system.  dbin is needed to mix in data from a microphone, or from an external audio device plugged into the line-in jack.

       The audio device used by dbin must support full-duplex operation.  Also, this device must not be used for  the  master  or  cue	output	of
       dbfsd.  Otherwise, dbin will output but an empty audio stream.

OPTIONS

       -8     Input data comprises of PCM-coded 8bit unsigned samples.	(Default: 16bit signed samples.)

       -a dev Connect to audio device dev.  (Default: /dev/dsp.)

       -c n   Connect to channel n of dbfsd.  (Default: first channel available.)

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

       -h     Print summary of available options.

       -l     Audio input is a line-in source.	(Default: input is a microphone source.)  source.)

       -m     Input data is a mono stream.  (Default: interleaved stereo stream.)

       -r rate
	      Input data is sampled at rate Hertz.  (Default: 44100Hz.)

       -s     Send output data to stdout.  (Default: Send output to dbfsd.)  dbfsd.

SEE ALSO

       dbcat(1), dbfsd(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.

								  August 6, 2002							  DBCAT(1)

7(16 December 2012)													       7(16 December 2012)

NAME

       dsp - Open Sound System audio devices

DESCRIPTION

       /dev/dsp  is  the  default audio device in the system. It's connected to the main speakers and the primary recording source (such as micro-
       phone). The system administrator can set /dev/dsp to be a symbolic link to the desired default device. The ossinfo utility can be  used	to
       list the available audio devices in the system.

       /dev/dsp_mmap,  /dev/dsp_ac3,  /dev/dsp_multich	and /dev/dsp_spdifout are default audio devices for specific applications such as games or
       media (DVD) players.

DIRECT ACCESS AUDIO DEVICE FILES

       OSS 4.0 (and later) will create audio devices under /dev/oss/<device> directory.  For example  /dev/oss/sblive0/pcm0  is  the  first  audio
       device  that belongs to the first Sound Blaster Live! or Audigy card in the system. These direct devices are used when an application needs
       to access specific audio device (instead of the default one).

       You can use the ossinfo(1) utility with the -a option to get a list of the available audio devices in the system.

LEGACY AUDIO DEVICE FILES

       Traditionally OSS has created device files like /dev/dsp0 to /dev/dspN for each audio device in the system. OSS	4.0  still  supports  this
       legacy  naming.	 These	files  are symbolic links to the actual device files located under /dev/oss. The ossdevlinks(8) utility is used to
       manage these links and it will be automatically invoked when OSS is started.

COMPATIBILITY

       o  The /dev/dsp (default() audio device file will be supported by all OSS implementations and versions.

       o  The special purpose audio default devices (such as /dev/dsp_mmap) are only supported by OSS 4.0 and later.

       o  The legacy audio device files (such as /dev/dsp1) are supported by all OSS versions and implementations.

       o  New style audio device files (under /dev/oss) are only supported by OSS 4.0 and later. However some independent OSS implementations  may
	  only support the legacy naming even they are otherwise OSS 4.0 compatible.

       o  /dev/dsp0 doesn't exist in all Linux systems which use /dev/dsp for the same purpose. In such systems /dev/dsp points to the first audio
	  device and /dev/dsp1 to the second.

PROGRAMMING INFORMATION

       See the Audio Programming section of the OSS Programmer's Guide (DSP(2)) for more info.

OPTIONS

       None

FILES

       o /dev/dsp
	      Default audio device

       o /dev/dsp_mmap
	      Default audio device for applications using mmap(2)

       o /dev/dsp_ac3
	      Default audio device for applications sending Dolby Digital (AC3) audio to an external receiver.

       o /dev/dsp_multich
	      Default multichannel (4.0-7.1) audio output device

       o /dev/dsp_spdifout
	      Default digital audio (S/PDIF) output device

       o /dev/oss/<driver>/pcmN
	      Direct access device files for individual audio devices.

       o /dev/dsp0 to /dev/dspN
	      Legacy style direct access audio device files.

AUTHOR

       4Front Technologies

OSS Devices														       7(16 December 2012)