digital theatre sound (audio) (DTS)
Digital Theatre Sound(DTS) is a 6- channel compression method forsurround sound, comparable to Dolby Digital. The process is lossy and is supposed to offer better sound quality than Dolby Digital at a low compression ratio. DTS works with a data rate of up to 1,509.75 kbit/s and, like Dolby, with surround channels. These channels are calculated, encoded sound channels that support directional sensation.
The Digital Theatre Sound (DTS) audio file format comes in several flavors:
DTS 5.1: surround sound with six audio channels for front right, left and center, for rear right and left, and an LFE channel for a subwoofer. This transmits a reduced frequency range in the low frequency range.
DTS 6.1: DTS 6.1 is the extended sound standard DTS- ES for surround sound with seven sound channels. The process is essentially the same as DTS 5.1 with the difference that the signal for the rear center speaker is obtained via a matrix from the two rear signals (left and right). In addition to the six speakers, DTS 6.1 also has a low frequency channel for the subwoofer.
DTS-ES Discrete (6.1): surround sound with seven sound channels for front right, left and center, rear right, left and center and a low frequency channel for a subwoofer. Unlike DTS 6.1, the rear center channel is a full-range channel. DTS-ES 6.1 is the DHT version for THX and is called DTS-ES 6.1 discrete as it evolves
DTS++, this format that is mandatory for Blu-ray Disc and HD DVD, has been renamed DTS-HD (High Definition) and DTS-MA (Master Audio). While DTS-HD has 7.1 audio channels, DTS- MA operates losslessly with two and eight audio channels, respectively. The sampling rate for two audio channels is 192 kHz each, and 96 kHz for eight.