Realtek’s High Definition Audio Driver provide high quality DTS, Dolby, Surround Sound to your PC via the audio card. The software comes with a number of features and functionality such as a six channel Digital to Analog Converter (DAC) that fully supports the 16/20/24-bit Pulse Code Modulation format for 5.1 channel audio. It supports legacy analog input to analog output mixer as well as 44.1k/48k/96kHz Sony/Philips Digital Interconnect Format output through which you can connect the output of a DVD player to an external receiver. To use a Realtek embedded or OEM version sound card, the operating system typically requires a specific device driver, a low-level program that handles the data connections between the physical hardware and the operating system. Realtek High Definition Audio Driver is typically required for your audio device to function.