Kad bunyi awal tidak mampu merakam dan menghasilkan bunyi serentak. Kebanyakan kad bunyi masakini adalah [[duplex]] penuh.
In the late 1990s, many computer manufacturers began to replace plug-in soundcards with a [[codec]] integrated into the [[motherboard]]. Many of these used [[ Intel]] 's [[ AC97]] specification. Others used cheap [[Advanced Communications Riser|ACR]] slots.
To use a sound card, a certain [[operating system]] typically requires a specific [[device driver]].
uses [[proprietary]] drivers supplied by sound card manufacturers and supplied to Microsoft for inclusion in the distributions. Sometimes drivers are also supplied by the individual vendors for download and installation.
*The [[Linux kernel]] used in the [[Linux distribution]]s have two different driver architectures, the [[Open Sound System]] and [[ALSA]] (''Advanced Linux Sound Architecture''). Both include drivers for most cards by default. Sound card manufacturers seldom produce stand-alone drivers for Linux.
*The [[USB]] specification defines a standard interface for sound cards to adhere to, allowing a single driver to work with the various USB sound cards on the market.