7800/7700 MultiFrame Manual
7812UDXD Series 3G/HD Up/Down/Cross Converter with Simultaneous Dual Format Outputs and AES I/O
Page - 108
Revision 1.1.1
6.31.2.22. RF Overmod Protect Control
This control allows the user to author the RF Overmod Protect Control metadata for the Dolby bit-stream.
This parameter is designed to protect against over modulation when a decoded Dolby Digital bitstream is
RF modulated. When enabled, the Dolby Digital encoder includes pre-emphasis in its calculations for RF
Mode compression. The parameter has no effect when decoding using Line mode compression.
Except in
rare cases, this parameter should be disabled.
The
RF Overmod Protect
drop down menu provides the following options:
Disable
Filter is disabled.
Enable
Filter is enabled.
6.31.2.23. RF Mode
This control allows the user to author the RF Mode
metadata for the Dolby bit-stream. Six preset DRC
profiles are available for content producers: Film Light, Film Standard, Music Light, Music Standard,
Speech, and None. The
RF Mode
drop down menu provides the following options:
Film Light
Max Boost: 6 dB (below –53 dB)
Boost Range: –53 to –41 dB (2:1 ratio)
Null Band Width: 20 dB (–41 to –21 dB)
Early Cut Range: –26 to –11 dB (2:1 ratio)
Cut Range: –11 to +4 dB (20:1 ratio)
Film Standard
Max Boost: 6 dB (below –43 dB)
Boost Range: –43 to –31 dB (2:1 ratio)
Null Band Width: 5 dB (–31 to –26 dB)
Early Cut Range: –26 to –16 dB (2:1 ratio)
Cut Range: –16 to +4 dB (20:1 ratio)
Music Light (No
early cut range)
Music Light (No early cut range)
Max Boost: 12 dB (below –65 dB)
Boost Range: –65 to –41 dB (2:1 ratio)
Null Band Width: 20 dB (–41 to –21 dB)
Cut Range: –21 to +9 dB (2:1 ratio)