Lexicon RV-5 User Manual page 152

Mode Adjust
DOLBY DIGITAL & DOLBY DIGITAL EX
MODE ADJUST OR
DIGITAL
These listening modes are designed to decode and play back 5.1
discrete channels from 5.1-channel Dolby Digital sources. The five
main channels are full-frequency. The .1 channel, often referred to
as LFE information, has a limited frequency range of 120Hz.
The mode name differs, depending on the encoding present in the
input source, the EX DECODING parameter setting and the speaker
setup.
The Dolby DIGITAL EX listening mode is recommended for Dolby
Digital sources recorded with Dolby Digital Surround EX
encoding. This listening mode can also be used with other types
of 5.1-channel Dolby Digital sources with mixed results. The table
at the bottom of the page shows the conditions for the behavior
of the Dolby Digital EX mode when activated.
The Dolby DIGITAL EX listening mode is available when both the
side and rear speakers are present and Dolby Digital Surround EX
decoding is activated. Matrix decoding is then applied to derive a
surround back channel from the other surround channels.
• Dolby Digital Surround EX decoding is activated when the EX
DECODING parameter is set to ON or AUTO and a flagged
5.1-channel Dolby Digital source recorded with Dolby Digital
Surround EX encoding is detected.
Parameter Setting
EX DECODING: AUTO
EX DECODING: ON
EX DECODING: OFF
6-18
DIGITAL EX
5.1-Channel Dolby Digital
DOLBY DIGITAL
DOLBY DIGITAL EX
DOLBY DIGITAL
• Dolby Digital Surround EX decoding is not activated when the
EX DECODING parameter is set to OFF or AUTO and a non-
flagged 5.1-channel Dolby Digital source recorded with or
without Dolby Digital Surround EX encoding is detected.
Parameter Default Setting
EX DECODING AUTO
COMPRESSION OFF
LFE MIX +0.0dB
OUTPUT LEVELS Refer to page 6-28
CUSTOM Refer to page 6-28
Note:
The RV-5 cannot detect Dolby Digital Surround EX encoding in non-
flagged 5.1-channel Dolby Digital input sources because they do not
include information in the input signal that identifies Dolby Digital
Surround EX encoding.
Input Source
5.1-Channel Surround EX
(Flagged)
DOLBY DIGITAL EX
DOLBY DIGITAL EX
DOLBY DIGITAL
Lexicon
Possible Settings
AUTO, ON, OFF
AUTO, ON, OFF
–10.0 to +0.0dB
5.1-Channel Surround EX
(Non-Flagged)
DOLBY DIGITAL
DOLBY DIGITAL EX
DOLBY DIGITAL