The File Extensions Database

.SD2 File Extension

  • Developer by: Avid Technology
  • Category: Audio Files
  • Format: Binary

What is an .SD2 file?

.SD2 is Sound Designer II 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.

Programs that open Sound Designer II File
Apple QuickTime Player
Apple iTunes
Avid Pro Tools
River Past Audio Converter
Apple QuickTime Player
Apple iTunes
Avid Pro Tools

How to solve problems with SD2 files

  • Associate the SD2 file extension with the correct application. On :
    Windows: Right click on any SD2 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.SD2 files". Mac: Right click (or Ctrl-click) the SD2 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .SD2 is Sound Designer II File. Because only the current version supports the latest SD2 file format. Search, therefore, e.g. on the Avid Technology manufacturer website after an available .SD2 is Sound Designer II File update.
  • To make sure that your SD2 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.