Intel Smart Sound Technology (Intel SST) OED Libraries Extension is a driver and software package used to manage the audio features provided by Intel's Smart Sound Technology (SST) for certain Intel processors. Intel SST is a hardware and software solution that enhances audio and voice processing capabilities, and it integrates with the system's audio codec to deliver high-quality audio performance. The OED Libraries Extension (often referred to as OED or Intel SST OED) is part of the driver set that enables advanced audio processing features, such as noise cancellation, voice recognition, and speech processing, as well as optimized playback for modern audio applications.

This driver package is typically used on systems with Intel processors that feature integrated audio capabilities through Intel Smart Sound Technology, often found on Intel platforms from the 8th generation onward (including some Intel Core and Intel Atom processors).