Studio Technologies 76DA V.4.00 - Manual (Page 23)

Model 76DA/77 User Guide Issue 3, July 2012
Studio Technologies, Inc. Page 23
for Surround
Remote Mute All
Two configuration choices are associated
with the remote mute all function: disabled
and enabled. To utilize the remote mute all
function simply requires you to select the
enabled setting.
Remote Dim
Two configuration choices are associated
with the remote dim function: disabled and
enabled. To utilize the remote dim function
simply configure it for enabled.
Input Delay
A time delay can be added to the input sig-
nals, allowing compensation for delays that
may be present on associated video signals.
The selected time delay applies to all input
signals and cannot be applied selectively.
The configured delay time is referenced
to a sample rate of 48 kHz. In the case of
input signals with a sample rate of 48 kHz
the delay range is 0 to 340 milliseconds in
1-millisecond steps. For other sample rates
the time must be linearly scaled. For exam-
ple, for a sample rate of 96 kHz the actual
time range is 0 to 170 milliseconds. In this
case selecting a delay of 120 on the Model
77 will result in an actual time delay of 60
milliseconds. For 192 kHz sampling the time
range is 0 to 85 milliseconds. Selecting a
delay of 240 will result in a time delay of
60 milliseconds.
Surround to Stereo Downmix
Levels
The surround to stereo downmix function is
a useful tool for checking the compatibility of
surround (5.1) input signals with stereo and
monaural playback environments. The exact
technical formula for how the Model 76DA
handles the surround to stereo downmix
function can be selected by way of four con-
figurable parameters. The default settings
create a good general-purpose function
that’s effectively used by numerous users
of Studio Technologies’ StudioComm for
Surround products. But there are applica-
tion-specific situations where modifying
one or more of the parameters will be
appropriate. This can be in response to a
personal choice in monitoring methods or,
more frequently, to meet the requirements
of international broadcast standards.
When the surround to stereo downmix
function is active the path from the left (L)
channel input to the left post-fader output
channel and the right (R) channel input to
the right post-fader output channel is main-
tained. A configuration choice allows the
level of the L and R inputs routed to the
L and R outputs to be selected. By default,
when the surround to stereo downmix func-
tion is active the level of the L and R inputs
remain at unity, with no gain or loss applied.
An alternate setting allows the level of L and
R input channels to be reduced (attenuated)
by 3 dB. (The available changes in signal
level can also be notated as 0 dB or –3 dB.)
When the surround to stereo downmix func-
tion is active the left surround (LS) input is
routed to the left (L) post-fader monitor out-
put; the right surround (RS) input is routed
to the right (R) post-fader monitor output. By
default the level of the LS and RS signals
routed to L and R will be reduced (attenu-
ated) by 3 dB. An alternate setting allows
the levels to be reduced by 6 dB. (These
settings can also be notated as –3 dB and
–6 dB.)
When the surround to stereo downmix func-
tion is active the center (C) input is routed
to both the left (L) and right (R) post-fader
monitor outputs. By default the level of the