The working principle of the sound card: The working principle of the sound card is actually very simple. We know that the microphone and the speaker are all analog signals, and the computer can handle digital signals. The function of the sound card is to realize the conversion between the two. From the structural point of view, the sound card can be divided into two parts: the analog-digital conversion circuit and the digital-analog conversion circuit. The analog-digital conversion circuit is responsible for converting the analog sound signal collected by a microphone or other sound input device into a digital signal that can be processed by the computer; The conversion circuit is responsible for converting digital sound signals used by computers into analog signals that can be used by devices such as speakers.
There are two main types of sound cards: a built-in sound card and a built-in soft sound card .
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