Danley DNA 10K4, Руководство пользователя

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Parametric Equalization
There are nine stages of equalization available for each input channel, three shelving filters and six
parametric filters.
FIR Shelving EQ
The Input High Shelf EQ is implemented using a Finite Impulse Response (FIR) filter, and exhibits a
linear phase response; that is all frequencies are delayed by the same amount. This can be important
in applications where different amounts of EQ are applied to different parts of a speaker cluster,
such as to add high frequency EQ boost so that parts of cluster which are ‘throwing further’ can have
HF absorption correction added. If this EQ is not linear phase, then the zones where the speakers
combine may suffer frequency response anomalies.
Because the Input High Shelf EQ is a FIR filter, it will necessarily introduce some latency (delay),
which is constant regardless of the settings. However, when the ‘Enable’ parameter is set to “Off”, it
is removed from the signal path entirely, so it does not add any latency. In this page you can change
the frequency parameter from 2kHz to 20kHz, enable/disable the filter, and change the cut or boost
in 0.2dB increments. The presence of an active Group Overlay parameter is indicated by the ‘[]’
symbol being appended to the Gain value (See
Overlays ). The filter (and its associated latency) can
be completely removed by setting the enable parameter to the “Off” position. Note that this EQ can
only be used in Module Groups if set to ‘On’.
Also see Latency Delay .
Parametric Filters
Parametric filters are defined by frequency, bandwidth and gain. The frequency is adjustable over
the range from 10Hz to 25.6kHz. The bandwidth shown as Width on the screen, ranges from 0.10
octaves to 5.2 octaves. Bandwidth can be shown and adjusted as Q or Octaves (Oct). Gain is adjusted
in 0.2dB increments. The presence of an active Group Overlay parameter is indicated by the ‘[]’
symbol being appended to the Gain value. See
Overlays .
Also see Bandwidth Units in Utilities.
Routing
Routing allows users to route any physical analogue or digital signal channel to any DSP input. This is
effectively a matrix mixing system where all DSPs can be driven from any one input, or from pairs of
inputs “
1+2 ”, “ 3+4 ”, “ 1+3 ”, “ 1+4 ”, “ 2+3 ” or “ 2+4 ”. Summed inputs have 6dB of attenuation so that a
sum of largely similar programme material remains at the correct calibrated level. When a sum input
is selected, the input DSP meters show the higher of the two inputs so that indication of the onset of
clipping of either input is indicated.
Output
Gain and Polarity
The gain page of the output channel allows users to increase or decrease the relative signal gain for
the selected output. The Gain value may be adjusted in 0.2dB steps from -­‐40dB to +20dB. This page
will also allow users to change the polarity of the selected output from normal to reverse.