
2.7 The soundcard
It is no longer possible to imagine many applications without sound, e.g. DVD films, TV, games, Internet radio etc.
Soundcards convert digital signals into analog signals that can be processed by speakers or amplifiers (DA converter). When recording, e.g. with a microphone, analog signals are converted into digital signals (AD converter).
The most important components of the soundcard are: Synthesiser (sound generator), AD/DA converter (Analog Digital / Digital Analog converter) for recording and playing back sounds. Connections for headphones or speakers and a microphone are integrated.
By default the output signal for sound playback is an analog signal at the corresponding connection socket. In some configurations, it is also possible to use the sound signal as a digital signal. The SPDIF (Sony Philips Digital InterFace) connection is available for this purpose.
There are two options for processing and playing back sound on our PC systems:
•using a soundcard
•Sound on Board
Sound processing and playback using a soundcard
The soundcard is inserted into one of the PCI slots. In this variation, the original manufacturer’s CD is normally supplied. This CD contains the necessary drivers, programs and documentation.
Caution! If it is necessary to restore your system, you should install the drivers and programs from the CD accompanying the soundcard, as described in the "System recovery" manual supplied.
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