Operation Manual

5.3 The FX View 29
The EQ module features two peak filters, labeled LMF and HMF, allowing to shape the signal
in two frequency bands as illustrated in Figure 12. The filters apply a gain factor to frequency
components in a band located around the cutoff frequency of the filters. This cutoff frequency is
adjusted using the Freq knob and can vary between 100 Hz and 10 kHz. The gain factor applied
a the cutoff frequency is controlled by the Gain knob and can vary in a ±15 dB range. When
in its center position there is no attenuation (0 dB). Turning it clockwise boosts the amplitude of
frequencies located around the cutoff frequency while turning it anti-clockwise reduces it. The
Q knob is used to adjust the so-called quality factor of the filter which controls the width of the
frequency band on which the filter is active. In its leftmost position, the frequency band is wide
and it gets narrower as the knob is turned clockwise.
Amplitude (dB)
0dB
Gain = 30 dB, Q = 2
Gain = 20 dB
Gain = 30 dB, Q = 5
Gain = 10 dB
Gain = 30 dB, Q = 2
Frequency (Hz)Freq
Figure 12: Peak filter.
The SC button (side-chain) is used to determine if the output from the EQ module is to be used
as the control signal of the Compressor module as described in Section 5.3.2. Finally, note that all
the gain knobs from this module can be accessed directly from the Play view.
5.3.2 Compressor
The Compressor module is used
to automatically compress, in other
words reduce, the dynamics of a sig-
nal. This module receives two input
signals. The first one is the signal to be compressed while the second one is a control signal which
triggers the compression process when it rises above a given level.