Inovonics DAVID IV 719 N, Инструкция по установке и эксплуатации

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ticular program material sounds to you, which of course also
depends on the setup of other processing parameters.
To be on the safe side, you may initially elect to proceed with
DAVID IV setup using the
Normal
limiter selection that does not
include our controversial ‘waveshape-symmetry management’
technology, and then assess any advantage (or not) by switch-
ing back and forth between
Normal
and
PIPP*
.
Limiter Drive
The
Limiter Drive (dB):
slider sets the input level to the broad-
band peak controller section to determine how hard the limiter
will be working. Much like the
Master Drive (dB):
control of the
Multipressor section, this slider has been given a range far
greater than required, so that the effect of essentially no limit-
ing vs. a very great amount of limiting can be sampled and
judged.
Actual limiter gain reduction (G/R) is shown in real time by the
Webpage and front-panel bargraph displays. Limiter G/R will
also be influenced to a lesser degree by Multipressor settings,
so
Limiter Drive (dB):
should be adjusted after the Multipressor
has been roughed-in for the desired spectral makeup of the sta-
tion’s signature sound.
Carrier modulation will top-out at the 100%, full-FM-deviation
point when any degree of G/R is indicated by the
Limiter WB
display. So, generally, the more G/R that is shown, the more
consistently program peaks will hover right at the 100% mark.
Obviously, a high-energy rock format would justify a higher
level of Limiter Drive, perhaps in excess of 10dB, and classical
or jazz music should use a lower setting, perhaps less than
even 5dB.
Limiter Density
While
Limiter Drive (dB):
forces program peaks toward the 100%-
modulation point,
Limiter Density (dB):
serves a similar function
to establish the average level (loudness) of the program.
The attack time of the DAVID IV peak controller roughly
matches the delay of the limiter ‘lookahead’ feature. Limiter re-
lease, on the other hand, has a dual-slope, ‘platform’ function,
with a quick release to the platform value, and then a much
slower release of the platform itself. The limiter platform is
based on an average of the program peak content, the working
value of which is adjusted with the
Limiter Density (dB):
slider.
With the
Limiter Density (dB):
slider ‘wide open’ at a +5dB setting,
limiter release is fast over the entire release range, imparting
greatest density (loudness) to the program audio, but probably
not without some audible side effects. At the minimum setting
of –5dB, the limiter release characteristic assumes the platform
value over the entire release range. Program peaks will contin-
ue to reach 100% modulation, but there won’t be as many
reaching that point. This reduces the average level of the pro-
gram signal and allows program audio to retain more of its in-
herent dynamic range.