This format offers better stabilization over the surround channels for complete 360-degree sound localization and surround pans (i.e., movement of sound in the surround channels from one side to another). This is a true 6.1-channel format, as the back surround audio channel is discretely encoded into the DTS bitstream. DTS-ES Matrix is completely backwards compatible with DTS 5.1 equipment. DTS-ES Matrix is compatible with THX Surround EX equipment. As such, the back surround channel is not discrete and therefore is not a true '6.1' format. The back surround channel is matrixed in similar fashion as the front center channel is matrixed into the front right and left channels in the Dolby Surround Pro-Logic technology. This is actually a 5.1-channel format with the back surround audio channel matrixed into those of the right and left surround. The same amount of audio encoded in Dolby Digital technology will use less disc space than if it was encoded in DTS. DTS audio data is not as compressed as Dolby Digital technology. Each of the 5.1 channels of decoded 20 bit DTS audio is superior to the linear 16 bit PCM audio used for conventional compact discs. This is an encode/decode system that delivers 6 discrete channels (5.1) of high quality 20 bit audio. Dolby Digital technology is commonly referred to as 5.1 (five point one) surround sound because it contains 5 full bandwidth (20 - 20,000 Hz) for the front, center and rear speakers, and one low frequency effects (LFE) subwoofer channel that is referred to as. This is a multi-channel surround system that contains 6 discrete channels of audio (left front, right front, center, left rear, right rear and LFE subwoofer). Processes the standard four channel Dolby ProLogic technology signal to reproduce 5.1 channel surround. This matrix multi-channel sound is encoded down to two channels for distribution, and then is decoded back to four channels when played back on a stereo source that decodes Dolby ProLogic technology surround. This consists of four discrete channels of audio (left, right, center and rear). Different surround sound types encode and decode this audio differently. Surround sound consists of multi-channel audio.
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