11.5

Table Of Contents
Effects and effect plug-ins 109
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Chorus
The chorus pedal creates characteristic "floating" sounds which one typically
recognizes from guitar or synth pads. You can add acoustic "depth" to an
instrument to add more power to the sound or to create the illusion that it
exists multiple times.
The chorus sound is created by using the so-called Doppler effect. You
probably have noticed this phenomenon daily life: The sound of an
approaching ambulance sounds higher than when it is moving away. This
effect is a result of the speed of the sound which first increases and then
decreases, thus also changing the sound pitch. If there were a second siren at
your location, an oscillation would develop between both sounds (just like
when two instruments are out of tune).
Chorus also splits the signal in at least two: direct sound and effects part. The
double effect is created by a short signal delay of the effect.
This delay is within the range of 10-30 ms (as in this one), this means that it is
short enough to be perceived as an "echo". The times would also be similarly
short if you were to double a guitar track for instance. A short delay in the mix
already sounds "doubled" but is not authentic. This is where the