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NAME
     sdtaudiocontrol - Solaris audio control

SYNOPSIS
     sdtaudiocontrol [ -d device ] [ -ac ]

DESCRIPTION
     The Solaris Audio Control is an  Solaris  audio  application
     that  controls  and configures the workstation audio device.
     By default, the audio control operates on /dev/audio, though
     the  AUDIODEV  environment  variable can be used to override
     this default.  An alternate audio device name may be entered
     on the command line using the -d option.  Specifying the -ac
     option causes the audio control to startup with the Applica-
     tion Controls panel open.

     The Master audio controls affect all audio programs  on  the
     specified  audio  device; for instance, adjusting the Master
     Playback volume instantly changes the audio hardware  output
     volume.   The  Application  audio controls affect individual
     audio channels;  for  instance,  adjusting  the  Application
     Playback  volume  changes  an audio channel's output volume.
     Furthermore, the audio control detects audio  state  changes
     made by other programs, and updates its display accordingly,
     so that it stays synchronized with the current device confi-
     guration.

     The ports available to choose from under the  Master  Output
     and  Master  Input  audio port list will change depending on
     the system hardware configuration.

     The Playback and Record tabs toggles the panel  between  the
     Playback and Record control panels.

Mixer mode
     The Mixer mode menu item toggles the audio  mixer  function,
     if  the  audio  device supports  it.  If the Mixer mode menu
     item is disabled (greyed-out), this indicates that the audio
     device does not support audio mixer functionality.

Application Controls
     The Application Controls menu item toggles  the  application
     panel  (i.e.  the  audio  channel panel). If the Application
     Controls menu item is disabled (greyed-out), this  indicates
     that  the  audio  device  does not support audio mixer func-
     tionality.

Playback Panel
     Output Ports
          The Master Output port list specifies the audio  output
          ports.   There  is  a  toggle for each available output
          port   provided   by   your   hardware   configuration.
          Typically,  the available output ports include Built-in
          Speakers, Headphones, and Line Out.   If  a  toggle  is
          present  but disabled (greyed-out), this indicates that
          the corresponding port is supported,  but  not  modifi-
          able;  this  can  happen,  for instance, when the audio
          device detects that a headset has not been plugged into
          the  headphone  jack.   Note that multiple output ports
          can be enabled simultaneously.

     Playback Volume
          This slider adjusts the output volume.   Volume  levels
          between  0  and 100 may be selected, where 0 represents
          infinite attenuation  and  100  is  maximum  gain.  The
          Application  Output  Volume  is  relative to the Master
          Output Volume.

     Play Balance
          This slider adjusts the left/right balance.  This  con-
          trol  does not appear if the audio device does not sup-
          port stereo balance control.

     Mute This button is used to enable and disable audio  output
          muting.  Note that muting output has no effect on audio
          input recording.

     Playback Tab
          This tab displays the Playback panel.  Multiple  output
          ports can be selected for playback.

     Record Tab
          This tab displays the Record panel. Only one input port
          can be selected to which to record.

Record Panel
     Input Ports
          The Master Input port  list  selects  the  audio  input
          port.   There  is  a  radiobox for each available input
          port provided by your  hardware  configuration.   Typi-
          cally,   available  input ports include Microphone, and
          Line in, although some systems  also  support  Internal
          CD.  If a control is present but disabled (greyed-out),
          this indicates that  the  corresponding  port  is  sup-
          ported,  but  not  modifiable;  this  can  happen,  for
          instance, when the audio device detects that  a  micro-
          phone  has  not  been plugged into the microphone input
          jack.  In general, input ports are mutually  exclusive;
          that is, audio signal on only one port is recorded.

     Record Gain
          This slider adjusts the recording  gain  level  in  the
          range 0 to 100.

     Record Balance
          This slider adjusts the left/right balance.  This  con-
          trol  does not appear if the audio device does not sup-
          port stereo balance control.

     Monitor Gain
          This slider adjusts the monitor gain level in the range
          0  to  100.   Monitor gain controls the amount of audio
          input signal that is fed through to  the  output  port.
          For  instance,  if  an audio source (such as a radio or
          CD-player) is connected directly to the input port, the
          input signal may be monitored through the selected out-
          put port by adjusting this slider. Note that there  may
          be  audible feedback (a high-pitched whine) if a micro-
          phone is connected to the workstation and  the  monitor
          volume is set greater than zero.

Audio Device Status Panel
     Audio Control includes an audio status panel that shows  the
     current state of the audio device.  This panel can be useful
     for debugging audio applications.   Selecting  ``Status...''
     from the View menu brings up the status panel.

     Click on a channel from the display area to see  the  status
     of  that  audio  channel.  If Mixer mode is not selected you
     can only select the Master option from the display area.

     Update Now
          When the Update Now button is clicked the audio  device
          status is immediately updated.

     Continuous Update
          When the Continuous  Update  toggle  is  selected,  the
          audio device status is continually updated.

SEE ALSO
     sdtaudio(1), audio(7I)

DIAGNOSTICS
     Audio Control will not switch Mixer mode off  if  more  than
     one audio channel is open.

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