Dolby Laboratories DP570 - Manual (Page 40)

28 Dolby ® DP570 Multichannel Audio Tool User’s Manual
Using the DP570 Features Generating and Adjusting Metadata
Example 1—Overriding an Individual Parameter Value
We’ll assume you are using an external metadata stream. The output of the DP570 is
feeding a DP571 or DP569. You want to add a compression profile because none was
originally included. To do so:
1. Select the program you wish to change.
2. Click the Dynamic Range metadata tab on the DolbyRemote 570.
3. Click the radio button to change the source of the Line Mode Compression from
external to internal.
You can now select one of the five compression profiles (for example, Film Light).
4.3.3 Using External Metadata
When using external metadata, make certain that the values are correct for the program.
Particularly when you use external program configurations, it is important to ensure that
the number of programs and the number of channels in each program are correctly set.
Monitoring with the DP570 should alert you to any problems.
Example 2—Adding a Second Program or Changing a Program
Signal and metadata flow from this example are shown in Figure 4‐2.
We’ll assume you receive a 5.1‐channel program encoded in Dolby E, and you want to
create a stereo‐compatible mix for it and reencode both onto another Dolby E master. In this
case the metadata for the second program does not yet exist, but you want to retain the
metadata from the first program. Furthermore, the program configuration from the
original stream must be changed because it indicates a single 5.1 program instead of the 5.1
+ 2 configuration you are creating.
After you create the stereo mix, you reencode the 5.1‐channel program along with the
stereo program using a DP571.
To monitor the reencoded program:
1. Click the Int radio button to select an internal program configuration source, and
choose 5.1 + 2 from the drop‐down list in Figure 2‐2.
2. Select either external metadata source for Program 1.
3. Click Program Select button 2
in the software.
4. Click Int to select an internal program metadata source, and select the parameters for
the second program metadata.