Compressed Audio Formats
The DVD medium uses data-compressed (as opposed to sonically compressed) audio for
two purposes:
• To deliver discrete surround audio (5.1)
• To conserve bandwidth and disc space, allowing more room for video. This is especially
applicable in long-form material such as feature films, notably when the smaller DVD-5
medium is the target.
Data-compressed audio for DVD comes in a few forms, described next.