DTS (Digital Theater Systems) is a standard home theater audio format developed in 1993 to compete with Dolby Digital. If used in your home theater system, it provides surround sound for 5.1, 6.1, and 7.1 setups. Compared to Dolby Digital, DTS uses higher bitrate, thereby offering superior sound quality.
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AA (Audible Audio) is an audio container format with a .aa filename extension and is used to store audiobooks. It can contain audiobook features such as spoken-word audio, bookmarks, chapter markers, and more. This format is supported by portable devices like Apple iPod, Amazon Kindle, ScanDisk Sansa, Creative Zen, and more.
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