A sound card (also known as an audio card) is an internal computer expansion card that facilitates the input and output of audio signals to and from a computer under control of computer programs. The term sound card is also applied to external audio interfaces that use software to generate sound, as opposed to using hardware inside the PC. This expansion card produce sound through speakers or Headphones.
Sometimes we can use audio card and sound board as synonyms of Sound card.
Sound cards gives the audio component to multimedia applications for example music composition, editing video or audio,games, presentation and video projection.
Sound card can be also integrated onto the motherboard. We can still refer to the integrated sound system as a sound card.
We can define four major components in Sound cards:
- The digital-to-analog converter (DAC), which converts digital data to analog sound
- The analog-to-digital converter (ADC), which makes digital recordings from analog sound inputs
- An interface to connect to the motherboard, generally using Peripheral Component Interconnect (PCI)
- Input and output connectors so you can plug in devices such as headphones, speakers or a microphone
On some sound cards, the two types of converters are integrated into CODEC a single coder/decoder chip.
Frequent issues with sound cards
When a Computer has no sound it’s possible that sound card is disconnected from its port or can be something software related that’s stopping playing sounds.
- Check the volume of anything you’re trying to listen to, isn’t muted.
- Also make sure that the system sound isn’t muted
- if the sound card itself is disabled in Device Manager, it could disabling the sound
- Another reason for a sound card not giving sound could be related to a missing or corrupt device driver. the best method to resolve this issue is to install the sound card driver.
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