The File Extensions Database

.ADX File Extension

  • Category: Data Files

What is an .ADX file?

.ADX is Approach Index File

Stores the indexing information for a Lotus Approach relational database

File Type 2 ADX Audio File
Developer by: CRI Middleware Category: Audio Files

An ADX file is an audio file used by various Sega Dreamcast, PlayStation 2, GameCube, and Wii video games. It is saved in the lossy ADX storage and compression format. ADX files are commonly used for background sounds because of their ability to loop.

The ADX format can be found as an audio stream interleaved into .SFD Sofdec videos. Many of the Sonic the Hedgehog games, including the Sonic Mega Collection video game compilation, use ADX files for voice recordings and sounds. However, not many video games currently developed support the ADX format.

NOTE: The FFmpeg supports ADX files but is limited to decoding 44100 Hz ADX files.

Programs that open ADX Audio File

How to solve problems with ADX files

  • Associate the ADX file extension with the correct application. On :
    Windows: Right click on any ADX file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.ADX files". Mac: Right click (or Ctrl-click) the ADX 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 .ADX is Approach Index File. Because only the current version supports the latest ADX file format. Search, therefore, e.g. on the N/A manufacturer website after an available .ADX is Approach Index File update.
  • To make sure that your ADX file is not corrupted or virus-infected, get the file again and scan it with antivirus software.