EAW DX1208 Help File page 36

larger systems, because the overall output gain remains constant for a given number of
automix-enabled inputs. And because the overall gain remains the same and microphones
are never 'off', gating automixers do not have problems with background noise modulation and
gate 'chattering', and are therefore in general more sonically transparent than gating
automixers. Both automixer types are superior to human operators in their ability to react
quickly to input level changes.
The DX1208 Automixer also measures signal correlation across all assigned inputs.
Therefore when signal cancellation occurs between one or more inputs, the cancellation is
factored into the gain-sharing calculations so that the gain reduction is appropriately weighted
towards the input(s) that are contributing to the energy of the Automixer output signal.
Correlation is not measured across Automixers; each Output Channel's Automixer functions
independently of the other.
In DX Navigator v1.0, automixing is not available on the DX Link Matrix Outputs.
Parameters
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Automix On/Off
•
Enable Automix
•
GR Meter
•
Ratio
•
Response Time
Automix On/Off enables automixing for an individual input
channel. When set to [Off], the channel is not included in the
automix gain calculations, and no automix gain is applied to it.
When [On], the channel is both included in the automix gain
calculations, and automix gain is applied to it.
Enable Automix enables automixing for the selected Matrix Output
Channel. When [Disabled], then no automix gain reduction is
applied to any channel assigned to that Automixer.
Displays the amount of automix gain reduction applied to an Input
Channel whose Automix On/Off is [On]; the GR Meter is inactive
when Automix On/Off is [Off]. The maximum Automixer gain
reduction is limited to -36db.
The Ratio setting controls the slope of the Automixer expander.
With a Ratio of [1.0], the slope of the transfer curve is at unity
(1:1), and the Automixer has no effect. As the Ratio increases,
the relative gain changes distributed amongst the channels
become more and more pronounced. The amount of gain
reduction applied to each channel can be calculated based on
adding a duplicate set of inputs to the Automixer. As an example,
with a single 0 dB sine tone applied to Matrix Input 1, no gain
reduction is applied. Adding an identical tone to Matrix Input 2
causes both channels' gain to be reduced 3 dB with a Ratio
setting of [1.5], 6 dB with [2.0], 9 dB with [2.5], and 12 dB with
[3.0]. Adding two more identical tones to Matrix Inputs 3 and 4
causes the same amount of gain reduction again, and so forth.
Controls the rate at which the Automixer changes the gain (30 dB
per Response Time period) of all automix-enabled channels. This
rate is identical for both the attack (gain reduction) and release
(gain increase) portions of the Automixer response.
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