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AT9 file extension

The table below provides useful information about the .at9 file extension. It answers questions such as:

  • What is the .at9 file?
  • What program do I need to open a .at9 file?
  • How can the .at9 file be opened, edited or printed?
  • How can I convert .at9 files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Sony ATRAC9 Compressed Audio

.at9
Description:
AT9 file is a Sony ATRAC9 Compressed Audio. Adaptive Transform Acoustic Coding (ATRAC) is a family of proprietary audio compression algorithms developed by Sony.
AT9 format description not yet available
Category: Audio files
Application: FFmpeg
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
AT9 aliases:
atrac9
AT9 related links:
-
AT9 related extensions:
Audio Interchange File

CD Audio Track

MIDI Music

MPEG Audio Layer 3 File

Real Audio Sound

Macintosh Sound Resource

Amiga 8SVX Sound

Creative Labs Sound Blaster Sound

Windows Waveform Sound

AC-3 Compressed Audio

Other types of files may also use the .at9 file extension.

🚫 The .at9 file extension is often given incorrectly!

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

ar9, at, ati, ato, atp, ta9

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

MyDOS Ramdisk Image
Sony ATRAC3 Compressed Audio
ETCBC Analyzed Text Data
Microsoft Accounting Import
ATO Modeler Project
Visual Studio ACT Project
Alphacam Lathe Post Data
TaxACT 2009 Tax Return Data

🔴 Can't open a .at9 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 cannot open this file:

example.at9

To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .at9 file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .at9 file extension, write to us!

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