Arturia KORG MS-20 V User Manual page 95

PITCH SHIFT is the base amount that echoes are shifted by. As they repeat, they
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will be shifted repeatedly, producing an endless spiral upward or downward
in pitch. Very subtle amounts can produce a feeling of anticipation (up) or
relaxation (down); larger amounts can produce strange, inharmonic results or
smoother and more musical 'boom' or 'shimmer' (try setting it to octaves). Pitch
shift can be set to 24 semitones (2 octaves) up or down.
SPRAY sets up a 'scattering' effect across the soundstage for each successive
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echo, with slightly randomized echo times. It's especially noticeable at higher
amounts of pitch shift. (0.00 to 500 ms)
HP FREQ and LP FREQ control two filters that shape the tone of the delayed
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sound. Darker echoes die away with less 'clutter' in the audio, and brighter
echoes carry a lingering sense of presence. (HP Freq 20 Hz to 10000 Hz, LP
Freq 250 Hz to 20000 Hz)
Arturia - User Manual KORG MS-20 V - The Effects Panel 90