User Manual

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11 Resources
11.8 Effect Types
StudioLive™ Series III
Owner’s Manual
Variable Feedback. Variable feedback, or regeneration, produces multiple decaying
repeats. Increasing the feedback value increases the number of echoes, as well as the
resonance that is created as one echo disappears into another.
F_Frequency. Sets the center frequency in Hz for the Filter Delay. F_Gain. Sets the
boost at the center frequency for the Filter Delay.
F_Q. Sets the Q for the Filter Delay. The Q is the ratio of the center frequency to
the bandwidth. When the center frequency is constant, the bandwidth is inversely
proportional to the Q, so as you raise the Q, you narrow the bandwidth.
11.8.3 Chorus and Flange
Close relatives of delay effects, modulation effects change the pitch and time of a
delayed signal using a Low Frequency Oscillator or LFO. Two of the most common
modulation effects are chorus and flange.
Created by mixing two identical signals together and delaying one of the signals by
a constantly varying time, the flanger is perhaps the simplest of modulation effects.
The resulting effect creates a kind of whooshing sound as the delay signal rises and
falls in varying parts of the frequency spectrum.
Similar to a flanger, a chorus effect is created by mixing the source signal with one or
more pitch-shifted copies of it. Each copy is then modulated by an LFO. A chorus is
different from a flanger in several ways. First, the time between the modulated delay
signal and the original source signal is longer in a chorus than it is in a flanger. Also,
a flanger only has one delayed signal, whereas a chorus may have two or more. And
finally, choruses do not feed any of the processed signal back into the processor.
Below are some of the most common parameters for the flanger and chorus effects:
Rate. Sets the frequency of the LFO modulating the delayed signal.
Width. Shifts the phase of the LFO modulating the delayed signal.
Shape. Sets the type of wave form the LFO will use to modulate the delayed signal.
Delay Offset. This is the time (in milliseconds) between the source signal and the
delayed signal.
Delay Modulation Amplitude. Sets the speed of the LFO modulating the
delayed signal.
Delay Feedback. Variable feedback, or regeneration, produces multiple decaying
repeats. Increasing the feedback value increases the number of echoes, as well as the
resonance that is created as one echo disappears into another.