8

Table Of Contents
Chapter 24 Ultrabeat 369
The EQ Gain knob is bipolar. Positive values boost a certain frequency range as
determined by the EQ type and Hz settings. Negative gain values lower the gain of the
frequency range. If the Gain knob set to the mean value of 0, the EQ has no effect.
Note: You can also return this knob to its neutral position by Option-clicking on it.
Alternately, you can click on the tiny 0 above the EQ Gain knob.
The frequency is set by click-dragging vertically on the Hz parameter field. This
determines the frequency range to be boosted or reduced.
Note: Option-clicking the Hz parameter returns its value to a neutral position. This is
200 Hz for the first band and 2000 Hz for the second. The selection of these default
frequencies was made in accordance with the different shelving characteristics of each
frequency band. Band 1 is designed to filter low frequencies and band 2, high
frequencies.
The Q factor is regulated by click-dragging vertically on the Q parameter field. The
effect of Q on the sound is heavily dependent on the selected EQ type:
 With shelving filters, as the Q value goes up, the area around the threshold frequency
becomes more pronounced.
 With the peak EQ, Q determines the width of the frequency band selection: low Q
values select a broad band while high Q values select a very narrow band to be
boosted or reduced with the Gain control.
Editing the EQ Bands Graphically
The EQ bands each have their own display which shows changes on a frequency
response curve. The display provides immediate access to the Gain, Hz, and Q
parameters. Just grab the graphical frequency response curve with the mouse, and
alter it by moving the mouse vertically or horizontally! Horizontal moves change the EQ
frequency, and vertical moves influence the Gain. At the peak (maximum point) of the
EQ, a handle can be dragged vertically to change the Q factor.