>> AD4 file

AD4 file format description

Many people share .ad4 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .ad4 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .ad4 files.

1 filename extension(s) found in our database.

.ad4 - 4-bit ADPCM Compressed Audio

The AD4 audio files are related to SoX. AD4 file is a 4-bit ADPCM Compressed Audio. Adaptive Differential Pulse Code Modulation (ADPCM) is a digital compression technique used mainly for speech compression in telecommunications.

Audio files
- / -
4-bit ADPCM Compressed Audio related extensions:
3-bit ADPCM Compressed Audio
Audio Visual Research File
Continuously Variable Slope Delta Modulation Audio
CVSD Unfiltered Audio
Grandstream Ring-tone
Macintosh HCOM Audio

Naturally, other applications may also use the .ad4 file extension. Even harmful programs can create .ad4 files. Be especially cautious with .ad4 files coming from an unknown source!

Can't open a .ad4 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .ad4 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

a4d, ad, ade, adr, adt, af4, ar4, as4, d4, da4, qd4

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

4DIM Model Animation
Alphacam Diecut Tool Data
After Dark Screensaver
AdTech Perfectfax Document
DSM Application Diagram
Microsoft Access Project Extension

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .ad4 file format, then write to us!

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