AERO.2000 User Guide July 2016
L16/1/18039
©2016 LINEAR ACOUSTIC INC. THE TELOS ALLIANCE. ALL RIGHTS RESERVED
Page 48
•
Multiband AGC > MB AGC Main > Ratio.
The ratio can be set to 1:1 to disable the
multiband AGC/Limiter. To create a wideband loudness controller set this to 1:1 and
use both the WB AGC 1 and WB AGC 2 to create a smooth single band system that does
not modulate dialogue when loud, frequency limited, passages occur. There will be a
wideband preset available for download on the AERO.2000 web page.
Note!
Please note that single band operation significantly compromises the ability to control
wide level changes, improve marginal content, and present a consistently excellent
sound for the home viewer.
•
Multiband AGC > Ratio Override.
Disable Gain Reduction Ratio Override on all bands
to increase peak level without changing the LKFS loudness level of the output. Enable
the Ratio Override on the middle bands to maintain very tight control over peak levels.
•
MB Thresholds > Limiter Threshold (coupled).
Increase the threshold for all bands to
allow higher peak levels in the output. Observe TP output during loud passages. This
adjustment has minimal effect on LKFS loudness level when increased carefully. Use
with the Ratio Override control above.
•
Final > Output Level.
Adjust to make average output, as seen on DRC Loudness Meter,
match the desired target level. Usually this is -24 dB LKFS for ATSC and -23 dB LUFS for
EBU adherents.
Note!
LKFS and LUFS are identical loudness measurement units referring to the ITU B.S.
1770 loudness standard.
If assistance is required to achieve a particular sonic goal please contact your Linear Acoustic
representative for assistance.
6.14
6.14
6.14
6.14
U
U
U
UP
P
P
PMAX II Local
MAX II Local
MAX II Local
MAX II Local
Some broadcasters need to insert local audio programming into a network or syndicated
program feed. It is often an advantage to do this audio insert right in the AERO.2000. Setting
DRC Local to the Local mode an AES or SDI embedded audio source pair can be routed to the
9/10 input of any processing Instance. The routing is found here: