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| ADCOM GTP-880 Owner’s Manual46
47ADCOM GTP-880 Owner’s Manual |
setting. The unit cycles through the options in the
following sequence:
no comp, dr comp1, dr comp2, dr comp 3, dr comp4
The night mode menu will disappear automatically approx-
imately 5 seconds (a factory default, may be changed in
OSD time out) after you make your selection.
There are two types of automatic compression control
built into the Dolby Digital process. Compression makes
the loud parts softer and the soft parts louder to reduce
the difference between the two.
One type of compression is most useful for situations such
as late night viewing of programs with a wide dynamic
range (like many action movies) that might disturb oth-
ers in your home. This function can also be used to pro-
vide compression for program material that may require
enhancement of overall intelligibility (such as some older
soundtracks).
Another feature provided by this option is the neces-
sary peak limiting required to avoid signal overload when
"downmixing" functions are selected.
The second variable provides additional peak limiting to
allow overall average program level to be increased by
adding even more compression to the signal.
These two algorithms can provide sufcient overall gain
reduction to allow even wide dynamic range soundtracks
with very soft parts and very loud parts to maintain good
audibility at low volume levels.
In most cases a minimum amount of dynamic range reduc-
tion is automatically included in the bitstream to ensure
safe downmixing. However, regardless if the user chooses
to engage Night mode compression or not, the DSP auto-
matically ensures safe downmixing regardless of the signal
encoding.
Use the and buttons to select a dynamic range option
you prefer for the Night setting.
no comp: This option leaves the compression at 0% change.
dr comp1: This option increases the compression by 25%.
dr comp2: This option increases the compression by 50%.
dr comp3: This option increases the compression by 75%.
dr comp4: This option increases the compression by 100%.
Each option increases the amount of Dynamic Range com-
pression to the signal. Depending on your family, neigh-
bors, circumstances, and the overall volume you wish to
achieve, we recommend you start with DR COMP1 or DR
COMP2 as your initial setting. You will have to experiment
with program material and your personal preferences to
determine what is acceptable and best for you.
Press the button to select the return to main menu option.
Press the select or menu button to return to the main menu,
or press the menu button twice to exit the menu system.