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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
A3S - Extension Details
Date Added: January 01, 1970
File Extension:  .A3S
Description 1: .A3S file extension is linked with Yamaha A3000 Sample File. The A3000 represents new concept in sampling technology. Its new features and facilities allow users to explore new possibilities in samplebased music. The standard A3000 offers 3 independent effects blocks utilized for sample processing. The basic A3000 has 64note polyphonic and is shipped with 2Meg onboard RAM.
File Type:   Audio and Music File
Mode: Binary
Program(s) to Open:  Windows: Yamaha A3000, Awave Studio
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