Chorus & Flangers - Johnson Amplification Integrated Modeling Amplifier User Manual

Section - 4 Editing Modules
Note: The following Delay parameters that are utilized within the Reverb section are to be used in the Room Echo reverb module.
Delay A
Delay B
Delay C
Delay D
Out A - D
Bal A - D
Shape
Spread
FB: Dly
Amount
Out L - R
Prim Out L
Prim Out R
Secd Out L
Secd Out R
Choruses and Flangers
Both choruses and flangers use a Low Frequency Oscillator (LFO) to produce their rich, swirling effects. When you change the speed and depth
Parameters of modulation effects, you're actually controlling the frequency and amplitude of the LFO. These settings determine the rate and
intensity of the modulation effect.
In general, here's how a chorus works: after entering the module, the source signal is split into two paths. One is allowed to pass through
the Module unaltered, while the other is delayed and pitch modulated with an LFO. The modified sound is then sent to the output, along
with the original. In Fig. 4-1 below, a sine wave is used to modulate the pitch of the split sound source.
40
Sets the length of time before hearing Delay Group A. Ranges from 0 to 120 milliseconds.
Sets the length of time before hearing Delay Group A and Delay Group B. Ranges from 0 to 120 milliseconds.
Sets the length of time before hearing Delay Group B and Delay Group C. Ranges from 0 to 120 milliseconds.
Sets the length of time before hearing Delay Group C and Delay Group D. Ranges from 0 to 120 milliseconds.
Controls the output level of the Delay Groups. Ranges from Off to 100%.
Controls the left/right balance of the Delay Groups. Ranges from -99 to 99.
Selects the shape of the output levels for the delay group taps. Shape selections are: Flat, Peak, Decreasing,
Increasing, Shelf, and Reverse Shelf.
Controls the width of the effect's stereo imaging. Ranges from 1 to 10.
Sets the amount of time before the delay is fedback in. Ranges from 0 to 170 ms.
Sets how much delay is fedback into the signal. Ranges from Off to 50%.
Adjusts the overall level of the left/right side of the reverb. Ranges from Off to 100%.
Adjusts the overall level of the left side of the Primary reverb. Ranges from Off to 100%.
Adjusts the overall level of the right side of the Primary reverb. Ranges from Off to 100%.
Adjusts the overall level of left side of the Secondary reverb. Ranges from Off to 100%.
Adjusts the overall level of the right side of the Secondary reverb. Ranges from Off to 100%.
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