7.3.1 Signal path
Figure 3 on page 2 shows a block diagram of the path a signal takes
through the units . Starting at the inputs, after analog / digital con-
version (alternatively, for two inputs, the signal of the digital input
AES / EBU, or, for the DSM-48DT, the signal of the Dante interface can
be selected), the signals pass the following stages:
➾ Input gain (GAIN)
➾ High pass filter (HPF) and low pass filter (LPF)
➾ 10-band sound adjustment (PEQ)
➾ Signal delay (DELAY)
➾ Dynamic range compressor (COMPRESSOR)
➾ Level limiter (LIMITER)
For each of the output channels, a mixed signal can be created from
the inputs signals processed . This mixed signal will pass the following
stages, ending with digital / analog conversion, and will then be routed
to the outputs:
➾ High pass filter (HPF) and low pass filter (LPF)
➾ 10-band sound adjustment (PEQ)
➾ Signal delay (DELAY)
➾ Dynamic range compressor (COMPRESSOR)
➾ Level limiter (LIMITER)
➾ Phase inversion option (PHASE INVERT)
The parameters for the blocks shown can be set in the views MAIN,
X-OVER, IN 1 – 2/4 and OUT 1 – 6/8 . Some of the parameters can be
accessed via various views .
Note: The setting options available depend on the access rights of the current
access level (
☞
chapter 5 .1) . To be able to make all settings, go to the
access level "Development" when calling up the control program for the
first time . This level allows you to define the access rights and passwords
for the other access levels as required by the users who will operate the
unit (
☞
chapter 7 .4) .
7.3.2 View MAIN (fig . 17)
[1] Buttons to go to a different view
[2] LOCAL PRESETS
To save ("Store") the current settings as presets on the computer
(like the menu item "File Save") and to load them from the
computer (like the menu item "File Open") .
[3] UNIT PRESETS
To save ("Store") the current settings as presets on the unit and
to load a preset that is saved on the unit
Select the storage location from the list field and enter a name
in the upper field .
[4] LINK – connection status
Green = connected
Red = not connected
To change to a different unit, select the unit from the list .
[5] UNIT NAME – name of the unit; overwrite the name to change it
[6] Controls GAIN to adjust the volume for the inputs; the level
indicators are next to the controls; the input / indication fields
(numeric input fields) are beneath the controls
[7] List field to select a common signal source for the input channels
C and D: analog, AES / EBU or Dante (DSM-48... only)
[8] Controls GAIN to adjust the volume for the outputs; the level
indicators are next to the controls; the input / indication fields
(numeric input fields) are beneath the controls
[9] Switch LINK to link the inputs (in pairs)
[10] Switch LINK to link the outputs (in pairs)
[11] Switch MUTE to mute the correspond ing input or output
[12] Input fields to name the inputs and outputs
7.3.3 View IN 1 – 2/4 (fig . 18)
[13] Buttons to go to a different view
[14] Curve diagram of the magnitude frequency response
Each of the 10 parametric filters has a point of reference (small
square with filter number) and a frequency curve in a specific
colour . The frequency response resulting from all active filters is
represented by a white curve .
Some of the filter parameters can also be set graphically . To do
so, move the corresponding point of reference with the mouse:
– move horizontally to change the frequency
– move vertically to change the gain
– move horizontally with the right mouse button to change the
quality factor / bandwidth
– double-click a point of reference to switch the corresponding
filter on or off
Symbols to the left of the diagram:
to enlarge the display ➾ full-screen mode;
to return to the reduced size mode
to save curves as image files (PNG)
to switch the fine-adjustment mode on and off
to show/ hide the values of all active filters
[15] Control GAIN to adjust the volume for the respective input; the
level indicator is next to the control; the input/indication field
(numeric input field) is beneath the control (same effect as [6])
[16] Switches ON to activate /deactivate the corresponding filter
[17] List field TYPE to select the filter type
[18] Input / Indication field FREQ for the filter frequency (enter values
in Hz)
[19] Input / Indication field Q /BW for the quality factor/ bandwidth
(click Q or BW to change between quality factor and bandwidth)
[20] Input / Indication field GAIN for filter boost / attenuation
[21] High pass filter HPF: input / indication field for the cut-off frequen-
cy (enter values in Hz, "Off" < 20 Hz)
[22] High pass filter HPF: list field to select the filter type
[23] Low pass filter LPF: input / indication field for the cut-off frequency
(enter values in Hz, "Off" > 20 kHz)
[24] Low pass filter LPF: list field to select the filter type
[25] Switch MUTE to mute the correspond ing input
(same effect as [11])
[26] Button COMPRESSOR to call up the configuration window for
the compressor of the corresponding input (
[27] Rotary knob DELAY with input / indication field for adjusting the
signal delay of the corresponding input; select the measuring unit
from the list field: time or distance (for automatic calculation of
the sound delay time)
[28] Level limiter LIMITER: rotary knob THR with input / indication field
for the threshold value
[29] Level limiter LIMITER: rotary knob REL with input / indication field
for the release time
☞
chapter 7 .3 .6)
35