Cisco D9054 Installation And Operation Manual page 147

Setting Up the Dolby Digital Channels,
4. Set the Mixing Level.
This option indicates the acoustic sound pressure level of the dialog level during
the final audio mixing session of the Main encoded Dolby digital bit stream.
Possible options are in the range of 0 to 31. If you have selected Dual Mono
encoding the Main mixing level setting applies to the left channel. The default is
25.
Note: In Dual Mono 1+1 mode this setting applies to the Main channel (left).
5. Set the Dialog Normalization.
Use this field to select how far (measured in dB) the average dialog level is
below digital 100% for Stereo 2/0 streams, Mono 1/0 streams, or the main
channel of Dual Mono 1+1 streams. The default is -27. The range is from -1 to -31
dB.
Note: The minus sign has been removed.
Note: In Dual Mono 1+1 mode this setting applies to the Main channel (left).
6. In Dual Mono 1+1 repeat steps 2 to 5 for the Aux channel.
Note: These settings apply to the right channel.
7. Set the Center and Surround Downmix Level for Dolby Digital Surround 5.1, in
dB.
8. Click Apply.
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