Datasat AP20 Installation And Operating Manual page 150

On the left side of the screen under "Film optical audio type" select the audio processing type for
the current format, which is displayed on top right of this screen.
None No processing is done. This is not a normal film format.
Mono. This is for processing a mono optical film track. The Academy filter is applied.
A-Type Apply A-type noise reduction. Should be used with the matrix decoder option enabled.
SR Apply SR-type noise reduction. Should be used with the matrix decoder option enabled.
Screen right allows you to enable the matrix decoder or bass extension. The right screen also
provides a pictorial of the resulting processing done for that format: Inputs from the film are on
the left. The resulting channels are on the right side, and are internal to the AP20. Note that these
are not necessarily the output channels as they and may be routed on the AP20 output (see Section
2.9.4 Assign Channels on AP20 in this manual).
Matrix decoder enables matrix decoding for the selected optical sound format. When Matrix is
enabled, center + surround channel are added. Note that matrix surround channels are not discrete
outputs; instead they are decoded from Lt and Rt.
Matrix Bass Extension (Optical Bass Extension (OBE)) enables bass extension for the desired
format. When selected, Lfe will appear as an output in the pictorial discussed above. Selecting
the Bass Enh button will take you to the Matrix Bass Extension setup screen.
Note: Matrix Bass Extension parameter settings are global and will be the same for both
nonsync and optical formats when enabled. Each format may enable or disable the Bass
Extension independently.
Typical Setups for optical formats are shown below. While other combinations are possible they
are not representative of what should be used with standard film formats.
When Mono is selected:
When A-Type is selected:
Appendix F. H338 Optical Film Card Option
AP20 Installation and Operating Guide
In this example, left total (LT) and right total (RT) are the
inputs. Output is: 3C = channel 3 is center (your only audio
out which is the sum of left total and right total). Notice Matrix
and OBE are not available for Mono. The Academy curve is
applied.
In this example, left total (LT) and right total (RT) are the inputs.
Outputs are: 1L = channel 1 is left, 2R = channel 2 is right, 3C =
channel 3 is center, 5Ls = channel 5 is left surround, and 6Rs =
channel 6 is right surround.
F-6
Version 1.25
Document #: 9301H39200 Ver. 1.25