A "사운드 카드" (sound card) is a hardware component in computers that processes audio data. It converts digital audio signals into analog signals, allowing users to hear sound through speakers or headphones. Sound cards can enhance audio quality and support various audio formats, making them essential for gaming, music production, and multimedia applications. Most modern computers come with integrated sound cards, but dedicated sound cards can be added for improved performance. They often include features like surround sound support and multiple audio inputs and outputs. Popular brands include Creative and ASUS, which offer a range of options for different needs.