Dolby Laboratories DP570 - Manual (Page 115)

A Guide to Dolby Metadata Extended Bitstream Information Parameters
Dolby ® DP570 Multichannel Audio Tool User’s Manual 103
D.7.5 Lo/Ro Surround Downmix Level
This parameter indicates the level shift applied to the Surround channels when
downmixing to an Lo/Ro output. When Extended BSI parameters are active, this parameter
replaces the Surround Downmix Level parameter in the universal parameters.
D.7.6 Surround EX Mode
This parameter is used to identify the encoded audio as material encoded in Surround
EX
TM . This parameter is only used if the encoded audio has two Surround channels. An
amplifier or receiver with Dolby Digital Surround EX decoding can use this parameter as
a flag to switch the decoding on or off automatically. The behavior is similar to that of the
Dolby Surround Mode parameter.
1.000 (0.0 dB)
0.841 (–1.5 dB)
0.707 (–3.0 dB)
0.595 (–4.5 dB)
0.500 (–6.0 dB)
0.000 (–999 dB)
Table D-25 Lo/Ro Surround Downmix Level Settings
Lo/Ro Surround Downmix
Level Setting
0.841 (–1.5 dB)
0.707 (–3.0 dB)
0.595 (–4.5 dB)
0.500 (–6.0 dB)
0.000 (–999 dB)
Table D-26 Surround EX Mode
Surround EX Mode
Not Indicated
Not Surround EX
Dolby Surround EX
Table D-24 Lo/Ro Center Downmix Level Setting
Lo/Ro Center Downmix
Level Setting