Meridian Audio Digital Surround Controller G61 用户手册

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页码 59
 THX DSP preset parameters
Parameter
Options
What it changes
 Surround
Surr. Rear, Surr. Side, Surr. All
Switches the surround signal between the side and rear speakers.
PLIIx Mov6, THX Surround EX, PLIIx Mus6, THX Ultra2 Cinema, and THX Music preset parameters
Parameter
Options 
What it changes
 LFE
-28dB to 0dB
The relative level of the LFE bass channel.
D S P   p r e s e t s
4 1
   THX
As with the PLIIx THX DSP preset, THX re-equalises the signals to 
suit domestic listening conditions, and applies frequency-response 
correction and decorrelation to the surround channels to make the 
surround sound more realistic. It can be used whether or not your 
other equipment is THX approved.
  PLIIx Mov6,   THX Surround EX,   PLIIx Mus6,   THX Ultra2 
Cinema, and   THX Music
These presets are available if you have four surround speakers. They 
use Dolby Pro Logic IIx, Dolby Surround EX, and THX Ultra2 Cinema 
processing to generate multiple signals for larger home theatres.
PLIIx Mov6 uses extended PLII technology from Dolby to generate 
four surround signals from traditional multichannel source material 
like Dolby Digital 5.1. It is intended for use with movie soundtracks.
PLIIx Mus6 also creates four surround signals; it is intended for 
multichannel music playback from sources such as DVD-A or SACD 
music discs.
THX Ultra2 Cinema and THX Music use a THX proprietary process 
called advanced speaker array to provide a mix of ambient and 
directional surround sounds using four surround speakers. Optimum 
performance of THX Ultra2 Cinema and THX Music is produced 
when the two rear speakers are placed close together behind the 
listening position. THX Ultra2 Cinema is recommended for movie 
soundtracks that are not Dolby Surround EX encoded, and THX 
Music is recommended for listening to multichannel music.