Current surround formats

Revision as of 22:20, 22 July 2008

Adapted from this sticky on the OCAU forums.

"Obviously this should have been done a while ago..." - Tony

Note: Obviously they call it "6.1" but it is only 5.1 in reality.

THX EX Surround 7.1 - L/C/R + SL/SR + LFE + two matrix rear centres; depending on the product, the matrix rears can be summed mono or derived stereo. This is applied to Dolby 5.1 EX titles. Later Dolby 5.1 EX was introduced as THX 7.1 was too expensive for the majority of systems.

THX Ultra - 5.1 systems, rated for 3,000+ cu.ft rooms (same as the old THX cert.)

Other THX formats aren't worth anything.

Dolby Pro Logic II - derived centre + SL/SR + LFE (Dolby Pro Logic II is also a matrix encoding format.)

Logic 7 - derived centre + SL/SR + SBL/SBR + LFE can be applied to either stereo or 5.1/6.1 formats depending on sophistication of processor. Limited to Lexicon and Harmon Kardon equipment.

There is also an emerging dts 24/96 format at 768k/s with 5.1 or 6.1 channels. I think they call it "dts 96/24".

SACD are found in most new Philips and Sony Dvd players.

DVD-A uses the same coding method of Cds by extending the word length from 16 to 24 bit. Thus the improved performance.

@@ Line 8: / Line 8: @@
 *'''Dolby Digital 5.1 EX''' - L/C/R + SL/SR + LFE + matrix Rear Centre
-*'''dts 5.1 - L/C/R + SL/SR''' + LFE (768 or 1,536k/s)
+*'''Dolby TrueHD'''
-*'''dts '6.1' ES-Matrix''' - L/C/R + SL/SR + LFE + matrix Rear Centre
+*'''DTS 5.1 - L/C/R + SL/SR''' + LFE (768 or 1,536k/s)
+*'''DTS '6.1' ES-Matrix''' - L/C/R + SL/SR + LFE + matrix Rear Centre
 '''Note:''' Obviously they call it "6.1" but it is only 5.1 in reality.
-*'''dts 6.1 ES-Discrete''' - L/C/R + SL/SR + LFE + discrete Rear Centre
+*'''DTS 6.1 ES-Discrete''' - L/C/R + SL/SR + LFE + discrete Rear Centre
+*'''DTS-HD Master Audio'''
 == Decoding Format ==