Varieties of SD Files

Main SD Affiliation

.SD

File ID:	.sd
Class:	Sound Designer Audio File

Audio file format made using the MacOS audio editing program; Sound Designer.

Organization:	Various Developers
Group:	Audio Files
Folder:	HKEY_CLASSES_ROOT\.sd

Software Programs That Open The Sound Designer Audio File:

Awave Studio by FMJ-Software

Windows

Avid Pro Tools by Avid Technology

Windows

Mac

Additional SD Files

.SD

File ID:	.sd
Class:	ESPS Sampled Data File

Audio file format made by Entropic Research Laboratories. It is used for the HTK speech recognition toolkit, SD signal processing library, and the WAVES+ display program.

Organization:	Various Developers
Group:	Audio Files

Software Programs That Open ESPS Sampled Data File Files:

The Hidden Markov Model Toolkit (HTK) by Machine Intelligence Laboratory

Compatible with:

Windows

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Troubleshooting Problems Opening SD Files

Troubles Opening SD Files

Awave Studio is Not Installed

Double-clicking your SD file prompts the message "%%os%% Can't Open SD File". Customarily, this means that Awave Studio is not installed on %%os%%. Because your operating system doesn't know what to do with this file, you won't be able to open it by double-clicking.

Tip: Another SD-related program can be selected to open the file by clicking "Show Apps" and finding the application.

Outdated Awave Studio

Sometimes your installed version of Awave Studio won't support your Sound Designer Audio File file. You will need to download a newer version of Awave Studio if you don't have the right version. The primary cause of this problem is that your Sound Designer Audio File file was created by a different (newer) version of Awave Studio than what's installed.

Tip: If you right-click on your SD file, then select "Properties" (Windows) or "Get Info" (Mac), you can obtain hints about what version you need.

Ultimately, most of the difficulties opening SD files are due to having the wrong version of Awave Studio installed.

More Causes of Problems Opening SDs

Assuming you have the right Awave Studio version installed, other problems can prevent you from opening SD files. If you are still having problems opening SD files, there may be other issues that are preventing you from opening these files. Issues that aren't software-related:

• SD file references in the Windows Registry are broken
• Deletion of the SD file description from the Registry by mistake
• Incomplete or bad installation of a software application associated with the SD format
• Your SD can't be loaded properly (file corruption)
• Malware-tainted SD file can't be opened
• Hardware associated with SD has outdated drivers
• Windows cannot load your Sound Designer Audio File file due to insufficient resources (eg. RAM)