DTS (Digital Theater Systems) is a company specialising in multichannel digital surround sound formats used for both commercial/theatrical and consumer grade applications. The term DTS usually refers to the multi-channel audio codecs from the company, including DTS, DTS-ES, DTS Neo:6, and DTS 96/24. DTS audio codecs are used in both commercial and home theatre applications.
The basic and most common version of the format is a 5.1-channel system, which encodes the audio as five primary (full-range) channels plus a special LFE (low-frequency effect) channel for the subwoofer. However encoders and decoders can support numerous channel combinations.