DTS

dts	VLC can decode this container. The module name to use at the command line is es.

DTS is a private company that develops audio formats, similar to Dolby. The term "DTS" generally refers to DTS's digital surround audio technology that is used widely on DVD-Video discs, just like Dolby's Dolby Digital/AC3.

DTS differs from Dolby Digital in that it uses less compression and has a lower bass extension, which allows it to produce a better sound quality. DTS Stereo sounds almost identical to Dolby Surround.

Codec info

DTS Coherent Acoustics is a perceptual audio codec. The main technique used is a QMF filter together with Huffman, ADPCM and vector quantization.

The DTS codec consists of a core and various extensions, that improve quality.

DTS Extensions

• Core: core components with core sub stream
• XCh: DTS-ES backward compatible 6.1 extension

Adds an extra centre surround channel, with 6.1->5.1 downmix embedded in the core stream using default down-mix coefficients.

• X96: sampling frequency extension up to 96 kHz

48kHz downsampled stream is embedded in the core.

• XXCH: channel extension beyond 5.1

Allows up to 32 additional channels, with the 5.1 downmix embedded in the core stream.

• XBR: Extended Bit Rate extension (>1.5Mbps)

Guaranteed to be compatible with the DTS core

• XLL: Lossless extension

core and residual signal are splitted.

• LBR: Low Bit Rate component

DTS Products

• DTS-Core: 5.1 Primary audio stream core component decoder
  • Samples everywhere :)
• DTS-ES: Core + XCh, XXCh support
  • http://streams.videolan.org/samples/A-codecs/DTS/dts/ES%206.1%20-%205.1%2016bit.dts
  • http://streams.videolan.org/samples/A-codecs/DTS/dts/ES%206.1%2024bit.dts
• DTS 96/24: Core + X96 Support (+ XBR?)
  • http://streams.videolan.org/samples/A-codecs/DTS/dts/96-24.dts
  • http://streams.videolan.org/samples/A-codecs/DTS/dts/chronos%20-%2096-24.dts
• DTS-HD High Resolution Audio: Core + XCh + XBR support
  • http://streams.videolan.org/misc/DTS-HD/SpeakerID-DTS-HD-HRA.mkv
  • http://streams.videolan.org/samples/A-codecs/DTS/dts/Hi-Res%206.1%2024bit.dts
• DTS-HD Master Audio: Core + XLL support
  • http://streams.videolan.org/samples//A-codecs/DTS/dts/Master%20Audio%207.1%2024bit.dts
  • http://streams.videolan.org/samples//A-codecs/DTS/dts/Master%20Audio%205.1%2024bit.dts
• DTS Express: LBR support

• DTS-Broadcast, DTS Neo, DTS- Surround Sensation: unknown

Samples

http://streams.videolan.org/samples/A-codecs/DTS/dts/

Source code

• modules/codec/dts.c (decoder packetizer)