Allen&Heath GLD-112 Reference Guide - Manual (Page 23)

GLD Touch Screen Reference V1.4 – Issue 1 23 ALLEN & HEATH
Chorus
Chorus derives from the late 80’s where different stereo
field creation techniques influenced the sound of each
chorusing unit.
Chorus recreates the classics using 3 stereo-field
emulations. These emulations can be switched in any
combination creating many different stereo fields. All
switches up gives no stereo enhancement.
The traditional Rate and Depth controls cover the centre
panel. The LFO driving the modulator can be switched to
sine or rectified shape. The auto-panning section pans the
chorus voices giving stereo level shimmer, another classic
modulator effect.
The module is stereo in, stereo out (with software
normalised mono input if the source is mono).
Stereo Field emulations - All switches up turns all stereo
enhancement off. There are 3 stereo field emulations each
active with switch down. These create stereo fields from a
mono input. The 3 emulation switches can be used in
conjunction with each other creating many different stereo
field sounds, just like a number of classic chorus effects. Be
careful as all 3 selected together can sound muffled rather
than more ‘stereo’ with certain programme.
LFO Split uses two separate LFO’s for left and right,
creating a rich stereo image that varies with rate.
Wide pushes the left and right voices apart producing a
very wide stereo image, but can sound phasey on some
programme.
MultiVoice stereo field is created through multi-voice splits
across left and right. It typically produces a thick stereo
sound, but can sound muffled on some programme.
Rate - Min position for slow speed, best used with high
depth settings for slow, deep chorus. Mid position for
medium speed. Use with mid depth for classic chorus
sounds. Max position for fast speed. Use with low depth
settings for lively chorus.
Depth - Min position for small voice pitch variation. Useful
with fast rates. Max position for large voice pitch variation.
Can cause audible pitch change. Best with slow rate.
Sine/Rectified - modulator Switches between sine wave and
rectified LFO modulator.
Autopan - Automatically pans the chorus voices (wet signal
only, not the dry signal). This is level modulation of the wet
effect (not the dry signal) across the stereo field. It is not
complete signal auto panning.
Pan Depth - Determines the amount of movement across
the stereo field. Use higher settings for a stronger effect.
Speed - Determines the speed of movement across the
stereo field.
Preset Name is displayed. Touch and scroll using the
screen Rotary for live update. This is a way of live
auditioning all library presets for this module (factory, user
and USB). You can also select and recall a particular preset
using the Library window.
Symphonic Chorus
A faithful emulation of the 80’s classic chorus effect. Simple
to use and frequently requested. The unit has just two
controls, Frequency and Depth, controlling the rate and
delay range of the stereo modulator. The unit produces a
rich, lively and wide chorus sound with a suggestion of very
mild phasing / flanging.
Live engineers commonly use this unit for thickening vocals
and strings and creating a spatial sound from a mono
source. This has led to two factory presets ‘SymphonicVox’
and ‘SymphonyStrings’.
The module is stereo in, stereo out (with software
normalised mono input if the source is mono).
Frequency - Adjusts the modulator speed. Minimum setting
is a very slow modulation. Maximum is fast modulation. Like
the original 80’s unit, the maximum frequency setting is
extreme and should be used with shorter depth settings to
avoid space ship sound effects. Typical settings are just left
of mid position.
Depth - Adjusts the modulator delay depth. Minimum
position is short delay depth producing subtle modulation.
Some programme may be more prone to phasing/flange
type sounds. Mid position is a typical delay depth setting
creating tonal depth with rich chorusing. High settings of
depth can sound extreme if the frequency is also set too
high. Mid position is a typical starting point.
Preset Name is displayed. Touch and scroll using the
screen Rotary for live update. This is a way of live
auditioning all library presets for this module (factory, user
and USB). You can also select and recall a particular preset
using the Library window.