.SD2 File Extension
File TypeSound Designer II File
This file is saved in a binary format, which requires a specific program to read its contents.
What is an SD2 file?
Audio file created in the Sound Designer II format, which was originally developed by Digidesign for Macintosh audio recording programs; can be both mono or stereo and supports various bit depths and sample rates; used for exchanging audio data between applications.
NOTE: Digidesign is now Avid Technology.