Technical data

sbpro(7D) Devices SunOS 5.5
within approximately three-fourths of the full dynamic range.
Audio Ports The Sound Blaster hardware does not support multiple output devices, so the play.port
field of the audio information structure only supportsAUDIO_HEADPHONE. Output
volume is controlled by software. There is a volume control thumbwheel on the back of
the card which should be turned all the way up to maximum; otherwise no sound may be
audible.
The record.port field of the audio information structure allows selection of which audio
source is used for recording, and may be set to one of AUDIO_MICROPHONE,
AUDIO_LINE_IN,orAUDIO_CD. These select input from the microphone jack, line-level
input jack, or internalCD input, respectively. The microphone input is treated as a mono
source by the hardware, although the microphone jack is a stereo jack. If your micro-
phone has a mono plug, you should convert it to a stereo plug using an appropriate
adapter. Line andCD are stereo sources. When recording in mono mode, both stereo
channels are mixed before recording.
FILES /dev/audio linked to /dev/sound/0
/dev/audioctl linked to /dev/sound/0ctl
/dev/sound/0 first audio device in the system
/dev/sound/0ctl audio control for first audio device
/usr/demo/SOUND audio demonstration programs
SEE ALSO ioctl(2), aic(7D), audio(7I), streamio(7I)
Creative Labs, Inc. Sound Blaster Pro User ReferenceManual
BUGS The current driver implementation does not support the A-law encoding mode.
7D-284 modified 17 Jul 1995