DTS-HD Master Audio

High Definition Digital Theater Systems ( DTS-HD short ) is a further development of the DTS multi-channel sound system, which was designed especially for use with HDTV, Blu -ray discs and HD DVDs. It consists of a lossless DTS-HD Master Audio and the lossy DTS-HD High Resolution Audio which can be used alternatively depending on the requirement.

  • 2.1 Specification

DTS-HD Master Audio

DTS-HD Master Audio allowed by the high sampling rate and resolution as well as the lossless compression bitidentische a reconstruction of the studio master. In previous Blu -ray Disc DTS-HD Master Audio has by far the widest distribution of all the supported audio formats. A similar competition format is Dolby TrueHD.


  • Data rate: Variable data rates up to 24.5 Mbit / s on Blu -ray Disc and 18 Mbit / s on HD-DVD
  • Channels: up to 7.1 at 96 kHz/24 bit or 2.0 at 192 kHz/24bit
  • Sampling rate: up to 192 kHz
  • Resolution: up to 24 bits

DTS-HD High Resolution Audio

DTS-HD High Resolution Audio lossy compressed, and therefore would be suitable in the cases where no is the use of DTS-HD Master Audio for capacity reasons possible or meaningful. A similar competition format is Dolby Digital Plus


  • Data rate: constant data rate between 1.5 Mbps and 6.0 Mbps for Blu -ray Disc and 1.5 Mbps to 3 Mbps on HD - DVD
  • Channels: up to 7.1
  • Sampling rate: up to 96 kHz


DTS - HD sound can, after decoding are output analog over all common outputs. For each channel, a cable is then required. Digital, DTS - HD only be transmitted over HDMI unchanged. To transfer as a bitstream to a playback device is required which can output DTS-HD Master Bitstream, on the other hand an AV receiver, the decoder can decode this audio format. Both devices must have a HDMI 1.3a interface.

Alternatively already decoded in the player and then transmitted as multichannel PCM to the AV receiver DTS -HD. This is according to specification already with HDMI 1.1 and 1.2 possible, but not supported any AV receiver with HDMI input, the processing of multi-channel PCM signals. Since there is technically no difference whether the decoding in the player or in the AV receiver, is the widespread assumption that a genuine use of DTS -HD Master (or the other so-called new HD sound formats ) is only possible with a bitstream transmission is incorrect.

The PlayStation 3 from Sony since the firmware version 2.30 supports internal decoding of DTS -HD Master and output via HDMI as uncompressed multi-channel PCM signal. This therefore allows for AV receivers, although they do not have a decoder for DTS -HD Master, but to be able to accept 8-channel multi-channel PCM signals, play back DTS -HD Master fully.

About optical or coaxial S / PDIF connector is used by the PS3 or other players in the DTS core, ie a normal DTS track like on DVDs are output at ~ 1.5 Mbps.