Since almost all the multimedia applications require some form of audio production and mixing, it is useful if we know how to control the various channels of audio available from the sound card using the Volume Control Applet on the Panel. This may be launched by right-clicking the Volume Control icon on the Panel and selecting Open Volume Control. If it is not there you can also launch it form the Main Menu,
Main Menu --> Sound & Video --> Volume Control
Click to view screen shot Fig 6.1 Volume Control Applet.
The Volume Control application is essentially an audio mixer which enables you to mix the audio for a 2-channel sound card. As can be seen from the figure above the main component for each audio channel is the “fader”, represented by a control knob slider icon. The fader controls the volume of the channel. In addition each channel also has a mute, record and lock button. The mute button mutes the channel. The lock button locks the left and right channels together so that when the fader is adjusted both channels are syncronised. The rec button is a toggle to turn on or off the recording function of the soundcard on a channel.
Usually the main channel that is controlled is the Volume fader. To turn up (or down) the volume of an application, the
Volume fader may be manipulated. This can also be done by clicking on the Volume Control applet on the Panel.
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Tutorial: Multimedia and Graphics Access
1. Multimedia Access and Players
2. The Volume Control Applet
3. Playing Audio CDs
4. Playing Digital Audio Files
5. Playing VCD and DVD
6. Graphic Images Access
7. Using File Manager to Access Image Files
8. gThumb Image Viewer
