DTS (also known as Digital Theater Systems) is a holdover from standard DVDs. Supported by all Blu-ray players over a digital connection and most players will decode internally up to 5.1. Some examples of discs featuring DTS: 'Lara Croft: Tomb Raider' and 'Terminator 2'. Connections: Toslink or Coaxial SPDIF, HDMI and Multi-channel Analog
* With Toslink, your DTS bitstream is sent to your receiver for decoding & processing.
* With HDMI, your DTS bitstream can be decoded in the receiver, or your player can decode it
to PCM first.
* With Multi-channel analog, your Blu-ray player can decode the DTS bitstream (in most
players up to 5.1) and convert it to analog, then send it to the receiver for amplification. Like
above, your sound quality will depend on how well the audio components in both your player
and receiver match up.
• Dolby Digital Plus is an improvement over the standard Dolby Digital, DD+ will offer higher bit rates & more efficient compression which gives you better sound quality. While it can support soundtracks up to 7.1 but most Hollywood movies only go up to 5.1. Maybe this could be the reason DD+ is optional on the Blu-ray format, and not all players are required to support it. Most players will simply read the 640 kb/s core and dismiss the extension. Many studios use the basic Dolby Digital AC-3 or other advanced formats.
Connections: Toslink or Coaxial SPDIF, HDMI and Multi-channel Analog
* With Toslink or Coaxial SPDIF, you CAN'T get the full DD+ signal. If you try using this
connection type, your player will limit your output to Dolby Digital.
* With HDMI, if your player doesn't support DD+, it will use the AC-3 core instead, however,
some players will decode the DD+ to PCM and transmit it over a HDMI connection. While other
disc players will send the DD+ bit stream to your receiver for decoding but you will need HDMI 1.3 connections on both ends.
* With Multi-channel analog - your Blu-ray player will extract & decode the AC-3 core, or on some makes of players, they will decode the full DD+ and then convert it to analog.
Blu-ray Player Software supports DTS 5.1 and full HD wide screen Movie playback.
