Studio Technologies Dante 5422A, Руководство пользователя

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Issue 3, December 2022 Model 5422A User Guide
Page 34 Studio Technologies, Inc.
Model 5422A
DANTE INTERCOM AUDIO ENGINE
Dim Level
Choices are: 0 dB , 10 dB , 15 dB , 20 dB , Full Mute .
This value determines the amount of attenuation, if any,
that will be applied to the Dante program audio source
when an IFB interrupt function is active. When 0 dB is
selected the level of the program audio channel will not
change when interrupt is active. The interrupt audio will
simply be added (mixed or summed) with the program
audio. When Full Mute is selected the program audio
source level will fully attenuate whenever interrupt
activity is detected. When 10 dB, 15 dB, or 20 dB is
selected the program audio source will dim (attenuate
or reduce in level) by the selected amount. No matter
what choice is selected, audio signals associated with
the dim function will always change levels without the
addition of audio artifacts; the function is “click free.”
The same preservation of audio signal quality will also
apply to the interrupt audio signals as they change from
the off-to-on and on-to-off states.
In most broadcast applications, when interrupt is active
it is desirable for the level of the program audio source
to be reduced in level but not fully mute. In these situ-
ations, 15 dB is typically an effective value. However,
there are other situations where selection of 0 dB (no
attenuation) or even Full Mute would be appropriate.
As an example, for audio-with-picture Foley (sound
effects) applications selecting 0 dB (no attenuation)
would typically be desired. This would allow audio cues
(from a producer or director) to be communicated to
the Foley artists without impacting the program audio
signal. Another example is on-air news applications
where IFB signals are often utilized in environments
where high ambient audio levels are present. In this
case, the full mute setting can be effective. This would
allow interrupt audio to “cut through” to on-air talent,
minimizing the chance of confusion taking place when
alternately listening to program audio content and
interrupt (“cue”) audio.
VOX Minimum On Time
Choices are: Short (400 ms) , Medium (800 ms) ,
Long (1200 ms) .
This setting allows selection of the minimum time
required for a voice-operated (VOX) interrupt to go
from its active (on) state to its inactive (off) state. In
essence, this parameter defines how “long” there must
be silence in the interrupt audio signal before a VOX
interrupt moves to its disabled (off) state. The goal
of this parameter is to ensure that the VOX interrupt
function won’t turn off during the time that valid inter -
rupt audio is present. In most cases, the Short (400
ms) setting will be fine. But in certain cases, Medium
(800 ms) or Long (1200 ms) may be appropriate. The
correct setting relates to the language being utilized
and the characteristics of the specific “talkers.” (By
“talkers” we are referring to human beings speaking a
language with a specific set of characteristics.)