Crown 137769-3 EQ Filters, Add Button, Frequency Response Graph, Frequency, Gain and Q Settings

4 Operation

4.7.4 EQ Filters

To access the EQ Filters window (Figure 4.10), click on its icon (shown above) for any channel in the Signal Path window.

1. On/off

Enables or disables filtering.

2. Add Button

Click this to add a filter. A light green circle appears, indicating the active fil- ter.

3. Frequency Response Graph

Shows the frequency response of individual filters (not summed). After turn- ing on filtering (1), click the graph to add a filter. A node appears. Click-drag each node to set its frequency and gain. The node turns yellow when selected, yellow-green when on, and dark green when not selected.

4. Frequency, Gain and Q Settings

This is an alternative to dragging nodes on the Frequency Response Display. Use arrow keys or enter values for each filter band. All filters are frequency adjustable for 20 Hz - 20 kHz. Gain is adjustable from +24 dB to –24 dB.

High-Q filters with gain greater than unity can cause unwanted ringing. This is true for both digital and analog filters and should be used with great care.

5. Active Filter and Delete

Active Filter selects the filter you want to adjust. Delete removes the selected filter.

6. Type

The filters provide an array of filter types for any processing need: Low-pass, High-pass, Low Shelf, High Shelf, Low-pass EQ, High-pass EQ, Parametric EQ, All-Pass1, All-Pass2.

7. Octave Bandwidth

Sets the octave bandwidth of the selected filter.

8. Gain Slider

This is another way to set the gain of the selected filter.

DBC Network Bridge

1		5
6
		8
4	7	2

11

3

9 10 12

Figure 4.10 EQ Filters Window

page 30 Operation Manual