Ac-3 Status Display; 5.1 Music - Lexicon DC-1 - ADDENDUM Owner's Manual Addendum

DC-1 Effects

AC-3 Status Display

5.1 Music

5.1 Music Parameters
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The Dolby Digital version of the DC-1 provides an AC-3 Status Display in
the parameter menu. This display contains the following information.
MATRIX ENCODED: YES indicates a Dolby Digital input is matrix en-
coded; No indicates it is not.
DOWNMIX: YES indicates material is being downmixed for speaker con-
figuration. NO indicates no downmixing is taking place, except in the 5.1
Two-Channel Effect, which is designed to create a two-channel version of
5.1 channel material.
DATA RATE: 32-640kb, depending on the data rate of the incoming signal.
SAMPLE RATE: 44.1kHz or 48kHz depending on the incoming signal.
PGM CONTENT: shows you the actual spatial characteristics of the incom-
ing soundtrack. The information appears as F/S.LFE where F=the number
of front channels and S=the number of surround channels. LFE=.1 if the LFE
channel is on.
For example, a given source may display 3/2.1, indicating that the source
was recorded with 3 front channels, 2 surround channels, and the LFE
channel. When the designation .1 indicates that the LFE channel is on, as in
our example, a level meter at the bottom of the display will show LFE
channel activity. (Note, that there are instances where the LFE channel is on,
but no activity shows in the meter display. This is normal and should not
cause concern.)
REF OFFSET indicates the Dialog Normalization value that is present in
AC-3 bitstreams. In AC-3, dialog is reproduced at -31dBFS (31dB below full
scale). If the program material was mixed so that dialog is at -31dBFS, then
REF OFFSET=0dB. If the dialog was mixed at a "hotter" level, for example,
-21dBFS, then REF OFFSET = -10dB and the DC-1 would adjust the levels
down 10dB to bring dialog back to -31dB.
This Effect enhances playback of Dolby Digital music recordings, or Dolby
Digital film soundtracks with strong musical content. This effect contains
many of the features found in 5.1 LOGIC 7, with settings that are more
appropriate for music.
Parameter
AC-3 STATUS (display only — not user adjustable)
COMPRESSION
RE-EQUALIZER
SIDE LEVEL
REAR DLY OFFSET
SURROUND LEVEL
LFE MIX LEVEL
SUBWOOFER LVL
CUSTOM
Initial Value
Off Off, On, AUTO
Off
0.0dB +5 to -80dB, Off
0ms
0dB
+0.0dB
+0dB
Lexicon
Range
On, Off
0-20ms
-5 to +5dB
-10dB to 0dB
-5 to +5dB