Filter
Top Products
Operation: DN9340E
22
6.5. Filters
Select filters by pressing the FILTERS button.
The display for the filters is similar to the home page, showing the frequency response - in this case
just for the filters. At the top is a legend that indicates which filter is currently active for control and
also how many filters are in use. So, for example, if we have three filters in use, and are adjusting
the second one the legend would read “Filter 2 of 3”. If no filters are active, then the display is blank
except for the ADD key. Press this key to add a filter.
6.5.1 “Create Filter” function
Turn the left encoder to select the type of filter required. The available options are Notch, Low-pass
(normal and peaking), High-pass (normal and peaking), Hi shelf and Lo shelf. Turn the right encoder
to confirm the selection and create the filter. There are four filters available to each channel, each of
which can be used across the whole frequency range from 20Hz to 20kHz.
6.5.2 Soft Key Functions
selects which filter is to be controlled.
steps through the following pages on the alphanumeric display. After the
last page, the next press returns to the first page, and so on.
adds a new filter.
pressing this allows an individual section to be switched in and out of
circuit.
Default page displays the main parameter controls for each filter
The controls available vary depending on the type of filter selected:
Filter Type Left Encoder Centre Encoder Right Encoder
Notch Frequency Q -
Low Pass (LPF) Frequency Normal/Peaking Slope/Gain
High Pass (HPF) Frequency Normal/Peaking Slope/Gain
Hi Shelf Frequency Slope Level
Lo Shelf Frequency Slope Level
Number of active filter section
Soft key display