Operation Manual

6.25 Flanger 93
Tuning
The delay length is adjusted with the delay knob and is displayed, in milliseconds, in the counter
next to the knob. The length of this delay can be modulated by using the second input of the
module, the amount of modulation depending on the adjustment of the depth knob. In the left
position, there is no modulation and the delay line remains fixed while in the right position, with a
modulation signal varying between [-1,1] Volt, the delay line varies between 0 and twice the value
set with the delay knob. The feedback knob is a gain knob used to fix the ratio of “wet” signal
re-injected into the delay. Finally, the mix knob determines the amount of “dry” and “wet” signal
sent to the output. When this knob is adjusted in the left position, only “dry” signal is sent to the
output, in its center position (green LED On), there is an equal amount of “dry” and “wet” signal
in the output and in the right position, only “wet” signal is sent to the output.
Typical Use
The output from a LFO module can be used to control the filtering of a signal (the output of a
VCO for example) with a Flanger module. Different type of effects can be obtained with different
settings of the Flanger module.
• A chorus effect is obtained by using a delay of roughly 60 ms, a feedback value of 0.4, a low
frequency modulation signal (5 Hz) with depth adjusted to 0.3 and mix adjusted to a value of
0.4.
• A pure flanger effect is obtained with the following settings: a short delay length (5 ms),
much feedback (0.75), a low frequency modulation signal (between 0 and 2 Hz) with the
depth knob in the right position and a half and half mix between “wet” and “dry” signal (mix
knob in center position).
• A Vibrato effect is obtained with 45 ms delay (delay knob in center position), no feedback
(feedback knob in left position), a low frequency modulation signal (5Hz) with the depth
knob adjusted to its center position and sending only the “wet” signal to the output (mix
knob in right position).
Figure 47: Flanger module with LFO module