d&b audiotechnik D12, Руководство пользователя

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18 d&b Q-Series
The d&b ArrayCalc calculator
Sub Array
Room Settings
Arrays
For both acoustic and safety reasons d&b line arrays must be
designed using the d&b ArrayCalc simulation tool. It is available
as a native stand-alone application for both Microsoft Windows
1
(XP or higher) and Mac OS X
2
(10.4.10 or higher) operating
systems.
ArrayCalc is the system engineer's comprehensive toolbox for all
tasks regarding acoustic design, performance prediction,
alignment, rigging and safety parameters of the d&b line array
systems and subwoofer arrays. In combination with the d&b
Remote network, this can significantly reduce setup and tuning time
in mobile applications, and allows for precise initial simulations
in the planning of installations. EASE and DXF data export
capabilities make for easy data transfer.
The program allows the user to define up to five three-dimensional
listening planes to quickly create a representation of the
audience areas in a given venue, including balconies, side
stalls and in-the-round scenarios. Special functions assist in
obtaining the proper dimensions with laser distance finders and
inclinometers.
Additionally, up to two acoustic obstacles representing for
example video cubes, which will obstruct the sound propagation,
can be added to the model. Up to fourteen flown arrays or
subwoofer columns can be defined in a project file as single
hangs or in pairs, as well as a ground stacked subwoofer array
consisting of up to twenty five stacks. They can be freely positioned
according to their intended application, for example as main
hang, outfill, delay line etc. Position, orientation, coverage and
aiming are displayed in top and side views. For every array,
achievable RMS level over distance is calculated with high
resolution in real time, for either band-limited or broadband input
signals. The comprehensive simulation precisely models the
actual performance of the system, taking into account input level,
all system configuration options (such as CUT, CPL, HFC or
INFRA), limiter activity and air absorption. Acoustic shadowing,
whether by obstacles (if defined) or a balcony overhang is also
calculated. The load status of all rigging components is also
constantly monitored and displayed to determine whether a
given array is within the load tolerance.
Subwoofer array design is assisted by coverage and polar plot
prediction. A specialized algorithm allows the user to specify
subwoofer positions and a coverage angle, which is then converted
into appropriate delay times that result in the desired dispersion.
The program allows the simulation of different arrays to be
delayed to one another as well as showing arrival times and SPL