APPLIED ACOUSTICS SYSTEMS STRINGSTUDIO Manual do Utilizador descarregar pdf (Página 37)

4.3 The FX View 37

two conﬁgurable effect processors followed by a Reverb module. The conﬁguration of the EQ and

the Compressor module depends on the position of the SC and Pre butons of these modules as will

be explained below. The two effect processors can be set to a different type by using the drop-down

menu located at the center of each module for a wide range of possibilities. The effect list includes

a Delay, Distortion, Chorus, Flanger, Phaser, Wah Wah, Auto Wah and a Notch ﬁlter. The

order of the effect modules in the signal path can be changed by click-dragging the handles located

on the left of the modules.

The Multi-Effects module is also visible from the Play view just below the utility section. This

allows one to see rapidly which effects are selected for a given sound, turn the effects on or off and

rapidly adjust the amount of each effect. The Compressor, Equalizer and Reverb can also be

adjusted from this view.

4.3.1 EQ

The EQ module provides equalization over the low, mid, and high frequency bands. It is composed

of a low shelf ﬁlter, two peak ﬁlters, and a high shelf ﬁlter in series, labelled LF, LMF, HMF, and

HF respectively.

The functioning of the low shelf ﬁlter is depicted in Figure 21. The ﬁlter applies a gain factor to

low frequency components located below a cutoff frequency while leaving those above unchanged.

The cutoff frequency of this ﬁlter is adjusted using the Freq knob and can vary between 40 and 400

Hz. The Gain knob is used to adjust the gain factor applied to the signal in a ±15dB range. In

its center position there is no attenuation (0 dB). Turning it clockwise boosts the amplitude of low

frequencies while turning it anti-clockwise reduces it.

The high frequency content of the signal is controlled with a high shelf ﬁlter that works in

the opposite manner as the low shelf ﬁlter as illustrated in Figure 21. The ﬁlter applies a gain

factor to components located above a cutoff frequency while leaving those below unchanged. The

cutoff frequency of this ﬁlter, located above 1 kHz, is adjusted with the help of the Freq knob

while the gain factor applied to the signal, in a ±15dB range, is adjusted using Gain knob. In its

center position there is no attenuation (0 dB). Turning it clockwise boosts the amplitude of high

frequencies while turning it anti-clockwise reduces it.

The EQ module features two peak ﬁlters, labeled LMF and HMF, allowing to shape the signal

in two frequency bands as illustrated in Figure 22. 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

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APPLIED ACOUSTICS SYSTEMS STRINGSTUDIO Manual do Utilizador Página 37