What is the primary function of a sound card?

The primary function of a sound card is to improve audio input and output. A sound card is an essential component of a computer that processes audio data, allowing the system to generate sound through speakers or headphones and to capture sound via microphones. It converts digital audio signals to analog for playback, and vice versa for recording.

This capability is critical for various applications, including music production, gaming, video playback, and video conferencing, where high-quality audio is necessary for an enhanced user experience. Sound cards can also include features like 3D audio effects and support for multiple channels, which further enhances audio performance.