Audio Monitoring
channels prese
nt, the bar display adds two back channels, Lb and Rb, to create
a 7.1 channel display.
Full. Full does not modify the number of channels indicated by the channel mode
in either the display or the outputs.
3Stereo. Use 3 Stereo to monitor the Dolby Digital signal with only the left,
center, and right channels. In this mode, if there are surround channels present,
they are mixed into the left and right channels with the surround mix level
attenuation.
Phantom. When using Phantom, the center channel, if present, gets attenuated
with the center mix level value and is then added into the left and right channels.
Stereo. Stereo always creates a Lo/Ro downmix using the center and surround
mix levels contained in the metadata. The Lfe is disabled.
Mono. Mono mode will always mix down to a single center channel, usually by
creatingaLo/RodownmixandaddingLotoRo.TheLfei
s disabled.
Pro Logic Listening Modes
Pro Logic listening modes perform different functions depending on what the
source material is. If the source is a Dolby Digital stream with three or more
channels, then a surround compatible Lt/Rt downmix is created and then decoded
into a selectable number of channels. If the source is a 2/0 Dolby Digital stream,
then these Pro Logic modes will do a Pro Logic decode to produce the number of
channels requested by the listening mode. If the source is PCM, then a full Pro
Logic decode is provided regardless of the specific Pro Logic mode s elected.
Pro Logic Full. Pro Logic Full creates a Lt/Rt downmix of any input with three or
more channels. This Lt/Rt downmix will then be Pro Logic decoded to produce
a LCRS output where the surround channel is reduced 3 dB and reproduced in
both the Ls and Rs bars.
A 2/0 encoded Dolby stream is assumed to be Pro Logic encoded already and will
be Pro Logic decoded to produce a LCRS output. Again, the surround channel is
reduced 3 dB and reproduced in both the Ls and Rs bars.
Any PCM input is decoded the same as a 2/0 Dolby Digital input.
Pro Logic 3 Stereo. Pro Logic 3 Stereo creates a Lt/Rt downmix of any input with
three or m ore channels. This Lt/Rt d ownmix will then use Pro Logic decoding
to produce a center channel and provide LCR bars.
A 2/0 encoded Dolby stream will be assumed to be Pro Logic encoded already
and will be Pro Logic decoded to produce a LCR output.
Any PCM input will be decoded to provide LCRS channels where the surround
channel is reduced 3 dB and reproduced in both the Ls and Rs bars.
WFM8200 and WFM8300 Waveform Monitors 155
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