What are the main functions of sound cards, Computer Engineering

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Q. What are the main functions of sound cards?

Sound card (The card is frequently directly built into motherboards these days) is a board that has digital to analog sound converter, amplifier, etc., circuitry to play sound and to connect PC to different audio sources.

A sound card may support subsequent functions: 

1. Convert digital sound to analog form employing digital-to-analog converter to play back the sound. 

2. May record sound to play back later with analog-to-digital converter. 

3. May have built-in Synthesizers to create new sounds. 

4. May use different input sources (Microphone, CD etc.) and mixer circuits to play these sounds together.

5.  Amplifiers to amplify sound signals to nicely audible levels. 

Sound cards are defined by Compatibility, Connections and Quality.

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