MONO
STEREO
QUAD
DOLBY STEREO
DOLBY SURROUND
DOLBY PRO-LOGIC
DOLBY DIGITAL
DOLBY DIGITAL-EX
DTS
DTS-ES
MPEG-II
SONY SDDS
THX
TIMELINE
INTRODUCTION

Sound Formats

 

DTS-ES  
   

DTS-ES

The latest version of the DTS sound system uses technology licenced from Dolby Laboratories and is based around the new Dolby Digital Surround-EX format. DTS-ES includes an additional rear surround channel, known as surround-back, which is replayed through two or more speakers placed on the rear wall. The existing two rear surround channels, surround-left and surround-right, are played back through speakers on the side walls. The extra channel allows sound engineers to place sounds more acurately around the listener to enhance the realistic feeling when watching a movie.

DTS-ES is now available for home cinema on a select number of THX equipped amplifiers, which contain the additional decoding and speaker outputs for the surround-back channel. As with Dolby Digital Surround-EX, the ES format is backward compatible with current DTS technology. A normal DTS 5.1 soundtrack will playback on an ES equipped system with no problems, while an ES encoded soundtrack will play back on any 5.1 channel system. The additional rear channel is hidden, or 'matrixed' within the two existing surround channels and is only heard when the ES hardware decodes it. Without the ES decoder, the surround-back audio is divided between surround-left and right.