AU

Sun Microsystems audio file (.au) is an audio file format commonly used on Sun & NeXT operating systems.

Format
Files have a 24-byte header, followed by a optional description field of at least 4 bytes, then the audio data.

Identification
Files begin with signature bytes  (" ").

Specifications

 * Oracle Solaris 11.2 man pages: au(4)
 * http://pubs.opengroup.org/external/auformat.html

Software

 * SoX - Sound eXchange

Sample files

 * https://hg.java.net/hg/solaris~on-src/file/b23a4dab3d50/usr/src/cmd/audio/samples/au
 * https://telparia.com/fileFormatSamples/audio/au/

Resources

 * Au file format
 * Audio File Format Specifications: AU or NeXT/Sun sound file