THOMSON ViBE VS7000, User Manual

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Chapter 3 ’Web Browser Interface’ — Workflow Library Content Parameters
130 ViBE VS7000
User Manual
™ Lo/Ro preferred : Left only/Right only. The Lo/Ro downmix
discretely adds the Left and Right Surround channels to the Left
and Right speaker channels, respectively. This preserves stereo
separation for stereo-only monitoring and produces a
monocompatible signal.
The LFE channel is not included in any downmixes.
„ Lt/Rt center downmix level (multi-channel only) : level shift applied to
the Center channel when adding to the left and right outputs as a
result of downmixing to an Lt/Rt output, in decibels.
„
Lt/Rt surround downmix level (multi-channel only) : level shift applied
to the Surround channels when downmixing to an Lt/Rt output, in
decibels.
„ Lo/Ro center downmix level (multi-channel only) : level shift applied to
the Center channel when adding to the left and right outputs as a
result of downmixing to an Lo/Ro output, in decibels.
„ Lo/Ro surround downmix level (multi-channel only) : level shift applied
to the Surround channels when downmixing to an Lo/Ro output, in
decibels.
„ Dolby surround mode (stereo only) : indicates whether the stereo
audio is Dolby® Surround encoded or not. The value is not taken into
account in 1/0 mode.
„ Dialogue normalisation : average dialog level, in decibels.
„ DC highpass filter : set to true to enable the high pass filter on the input
audio samples.
„ Copyright bit : set to true if the encoded Dolby Digital bitstream is
copyright protected.
„ Original bitstream : set to true if the encoded Dolby Digital bitstream is
the master version or to false if it is a copy.
„ LFE channel filter : set to true to enable a 120 Hz filter. The filter is
applied to the LFE channel input of a Dolby Digital encoder prior to
encoding. It is ignored if the LFE channel is disabled. The filter
removes frequencies above 120 Hz that would cause aliasing when
decoded. This filter should only be switched off if the audio to be
encoded is known not to have any signals above 120 Hz.
„ Surround 3 dB attenuation : set to true to apply a 3 dB attenuation
before encoding the Surround channel(s).
„
Surround phase shift : set to true to apply a 90-degree phase shift to
the Surround channels. The Dolby Digital decoder can therefore easily
create an Lt/Rt downmix.