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IOUS - User Manual
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Low Pass
Type I
: cuts the high frequencies with available slopes of 6 dB, 12 dB,
24 dB and 48 dB per octave and with a high constant resonance value.
•
Low Pass
Type II
: cuts the high frequencies with available slopes of 6 dB, 12 dB,
24 dB and 48 dB per octave but with a frequency variable constant resonance
value.
•
High Pass
: cuts the low frequencies with the same available slopes as the low pass
mode, also with a high constant resonance value.
•
Band Pass
: cuts frequencies that are not around a center frequency, with the
same available slopes.
•
Band Reject
: cuts frequencies that are around a center frequency, with the same
available slopes.
•
Negative and positive feedback comb filter
: reproduces the delay based effect.
•
Vowel
: emphasizes various spectrum frequencies (called formants in speech
synthesis) so as to reproduce human vowels. The frequency parameter of the filter
is used to determine the pitch or gender of the voice whereas the resonance lets
you sweep through the various vowels.
Modulations
All the above filters and modifiers can be furthermore modulated with two LFOs, two
modulation envelopes, amplitude envelope and performance controllers such as velocity,
aftertouch or modulation wheel. A modulation matrix lets you build your own modulation
routes with adjustable modulation strength.
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