Label

Audio File description

Sub-Element

-Audio Format and Version,
- Audio Resolution,
- Duration,
- Audio Bit Rate,
- Compression,
- Encapsulation,
- Track Number and Type,
- Other

Definition

Technical Specifications of the Audio file

Example

See Sub-elements

Comment

Describe details of the audio file that are essential for managing preservation.

Required

Yes*

Repeatable

No

Origin

NLA 

Note

Audio Format and Version

Definition: The file type and version.
Examples: AIFF interleaved

Audio Resolution

Definition: The sampling frequency in kHz
Examples: 44.1kHz; 96kHz

 Duration

Definition: The length of the audio recording in minutes and seconds, or minutes, seconds, 100ths of seconds, and frames.
Examples: 67 minutes 12 seconds; 03:12:24:20

 Audio Bit Rate

Definition: Word length used to encode the audio. Consequently an indication of dynamic range.
Examples: 16 bit, 24 bit.

 Compression

Definition: The type and level of compression (note audio compression, or bit rate reduction is a non reversible, “lossy” process)
Examples: MPEG 3

Encapsulation

Definition: The delivery format and version.
Examples: Real Audio III

Trac Number and Type

Definition: The number of tracks and how they are related to each other.
Examples: 1. 2 track Stereo, 2. Single Track, 3. 5 channel surround

 Other

Example: