Ericsson SPR1100 Operations Instructions Page 273

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Dolby Metadata Presets
D.1 Dolby Metadata Presets
Eight Dolby Metadata Presets can be configured.
By default, presets 1 - 4 have the same configuration recommended by Ericsson.
Presets 5 - 8 are by default configured to the Dolby defaults for Stereo Film, Stereo
Music, Surround Film and Surround Music respectively.
To configure the presets, please navigate through the GUI as follows :
System Tab > Slots > Slot 1 > Audio Module > Dolby Metadata Presets
Then select the desired preset number.
The following table lists the alarm and failure identifiers generated within the MPM1
Transcoder Card.
Note: Navigating away from the main Services Configuration page will lose any
changes that have not yet been saved/applied.
All of the parameters in the presets can be changed to the user’s requirements. Any
of these presets can then be applied to any audio channel encoding audio in the
Dolby Digital format. Table D.1 lists the parameters for each preset.
Table D.1 Preset Parameters
Selected Option Description
Preset name Name of the preset (for user information)
Dialogue normalization level
Used by a decoder to determine the level of adjustment required to
achieve this set level.
Bitstream mode Flags the type of service in the bitstream.
Line mode compression profile Alters the dynamic range for line output.
RF mode compression profile
This alters the dynamic range for RF output. The overall level is
raised by 11 dB.
Center mix level
Indicates the downmix level when there is no centre speaker. This is
applied to left and right channels only.
Surround mix level
Surround downmix level for the front left and right channels when
consumer has no surround speakers.
Dolby Surround mode
Flags if a two channel encoded stream contains information for a
Dolby Pro-logic decode (Lt/Rt)
Audio production information exists
This indicates whether the Mixing Level and Room Type parameters
exist within the bitstream.
Mixing level
Indicates the acoustic sound pressure level of the dialogue level
during the final audio mixing session.
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