Setup Dolby Digital
Button #
3
provides a two page sub menu which allows the user to set up preferences pertaining to Dolby Digital
(AC-3), by
INPUT SELECT
button. The first page of this sub menu is shown in figure 91.
Figure 91 -
Video Display of the SETUP
/
INPUT Page 2
/
DOLBY DIGITAL Page 1 Sub Menu
2 Channel Mode
Some Dolby Digital sources contain only two of the possible five main channels. This is usually noted on the
material's cover, in the form of " Dolby Digital 2.0" or “Dolby Surround” as opposed to "Dolby Digital 5.1".
Embedded in every two-channel Dolby Digital data stream is an indication of whether or not the material is Dolby
Surround encoded. There are three possibilities for this indication: Dolby Surround encoded; Not Dolby Surround
Encoded; or No Indication.
Regardless of the indication value, the user can instruct the Casablanca III to further process this decoded signal in
virtually any
MODE
. For Dolby Surround encoded signals, use button #
1
(
2CHEN
– or 2 channel encoded) to
indicate which
MODE
should be used to further process the incoming signal. Use button #
2
(
2CHNEN
– or 2
channel non-encoded) to indicate which
MODE
is desired for further processing, if the signal is non-encoded. When
a mode is applied to a two channel Dolby Digital signal, first the signal must be Dolby Digital decoded, then this
decoded signal is manipulated by the selected mode that is selected in the
2CHEN
or
2CHNEN
parameters. When
this is the case and the additional selected mode is
MATRIX
, the
MODE
displayed in the VFD when in the
INPUT
SELECT MENU
will say “
DOLBY D MATX
”
If the indication is that the signal is not Dolby Surround encoded, or there is no indication, and the
2CHNEN
MODE
is
set to Dolby Digital, no additional surround processing will occur, thus producing a two-channel (stereo) output.
Compression
Dolby Digital contains provisions for reducing the dynamic range of a Dolby Digital source. This means reducing the
loudness of the loud passages and increasing the loudness of the quiet passages. Possible reasons for reducing the
dynamic range of a source include late night listening wherein loud moments may disturb others, and making tapes
for automotive / portable use wherein quiet passages may not be heard.
Casablanca III contains three parameters to control Dolby Digital compression. Button #
3
(
COMPRESSION
) simply
turns the compression
ON
or
OFF
. Button #
4
(
HI COMPRESSION
) controls the amount of volume that loud
passages will be reduced. Button #
5
(
LOW COMPRESSION
,) controls the amount of loudness that quiet passages
will be increased. A larger number indicates a greater amount of increase or decrease.
Note
: Some Dolby Digital sources do not allow for compression, in which case altering these settings will not result
in an audible change.
92
Содержание Casablanca III
Страница 1: ...THETA DIGITAL C O R P O R A T I O N Casablanca III Owner s Manual V 3 00 Rev A a Digital Done Right ...
Страница 16: ...Casablanca III Block Diagram DAC and Analog Out Sections Figure 4 Block Diagram of DAC and Analog Outputs 6 ...
Страница 23: ...13 Setup Menus and Pages Figure 14 Setup Menus and Pages ...
Страница 25: ...15 STEP BY STEP SETUP GUIDE ...
Страница 34: ...24 Setup Flowcharts A P Flowchart A Setup Subwoofer s ...
Страница 35: ...Flowchart B Front Left Right Configuration 25 ...
Страница 36: ...Flowchart C Front Center Configuration 26 ...
Страница 37: ...Flowchart D Left Right Surround Configuration 27 ...
Страница 38: ...Flowchart E Surround Center Configuration 28 ...
Страница 39: ...Flowchart F Sides Configuration 29 ...
Страница 40: ...Flowchart G Setup Speaker Levels 30 ...
Страница 41: ...Flowchart H Setup Speaker Delays 31 ...
Страница 42: ...Flowchart I Setup Dolby Digital 32 ...
Страница 43: ...Flowchart J Setup DTS 33 ...
Страница 44: ...Flowchart K Setup Circle Surround 34 ...
Страница 45: ...Flowchart L Copy Input Speaker Parameters 35 ...
Страница 46: ...Flowchart M Setup Default Mode 36 ...
Страница 47: ...Flowchart N Setup Post Process 37 ...
Страница 48: ...Flowchart O Map Input Jacks 38 ...
Страница 49: ...Flowchart P Setup Analog Input Levels 39 ...
Страница 88: ...REMOTE CONTROL 78 ...
Страница 114: ...APPENDIXES 104 ...
Страница 120: ...Figure 115 Wiring diagram for the Casablanca III Digital Output board and a 6 Channel External Volume Control unit 110 ...