A hangkártya is a hardware component in computers that is responsible for processing audio signals. It allows users to experience sound through speakers or headphones, enhancing multimedia experiences such as music, movies, and games. Hangkártyák can be integrated into the motherboard or exist as separate expansion cards. These sound cards support various audio formats and can include features like surround sound, digital audio output, and advanced audio processing. They are essential for gamers and audio professionals who require high-quality sound reproduction. Popular brands of hangkártyák include Creative Labs and ASUS.