Wheatstone Corporation WheatNet-IP BLADE3, Техническое руководство

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A U R A 1 I P P R O G U I
WheatNet-IP BLADE 3 / Jan 2016
At first glance the Gate Offset controls may not seem to have much range, but remember
that -6dB is half and +6dB is twice whatever the 0dB gating level is.
Processing Band L+R and L-R Outputs (L+R Out, L-R Out)
Each processing band has a pair of output level controls (L+R Out, L-R Out) that serve
as mix controls allowing the processing’s output spectral mix to be adjusted to taste. Both
pairs of Output controls have a +/-6dB range. The L-R Output controls, because they are
a special case, are also equipped with a MONO position (to be covered shortly).
The L+R and L-R Output controls feed the input to the following
multiband limiter (if enabled) so some care must be taken in adjusting
the mix controls in order to feed the multiband limiter an appropriate
signal. We recommend staying within a +/-3dB range when setting
the L+R Output mix controls.
As mentioned previously the L-R Output controls are a special case. The Aura1ip
AGC/Compressors operate in the sum and difference domain (L+R/L-R). What
this means is that the mono part of the signal (L+R) and the stereo parts of the
signal (L-R) are processed independently. Doing it this way permits useful audio
enhancements that cannot be accomplished in processors that operate strictly in the
Left/Right domain, as most do.
In the Aura1ip the L-R Output control adjusts the stereo part of the audio signal (its
depth, width, and spectral balance) without affecting the mono, or “dead center” part
(such as live voice). This permits very unique sonic signatures to be created that cannot
be achieved any other way.
Because there is an L-R Output mix control for each band, certain parts of the audio
spectrum may have their stereo width and depth enhanced (or reduced) independently of
the other bands.
The L-R Output controls also have a MONO position. When a band’s
L-R Output control is set to MONO, there is no L-R stereo width or
depth signal added by that band. A popular use of this feature is to
remove subsonic “mud” from the stereo difference signal. Bass energy
in most contemporary music has equal amplitude, in-phase components
in the left and right channels, so any L-R signal that might creep into
the low frequencies is probably not bass at all, but noise or other undesired signals. By
setting the Band 1 L-R Output (L-R Out) control to MONO, extraneous signals that might
otherwise have contaminated the bass frequencies are eliminated.
The setting of the L-R Output controls also adjusts the amount of stereo
enhancement present in the output mix. Adjusting the L-R Output controls to
positive numbers increases the amount of stereo separation for frequencies
contained in the bands whose controls are set above 0dB. A useful setting of the
L-R Output controls for tasteful stereo enhancement would be Band 1 = 0dB,
Band 2 = +3dB, Band 3 = +1.5dB. Of course reducing these controls has the opposite
effect, reducing stereo separation.