Waldorf Largo - Manual (Page 36)

Sound Parameter
Largo User´s Manual 36
differences when you change the Resonance
because of phase changes. Anyway, the effect isn’t
that spectacular.
• Comb+ / Comb- Filter differ from the other filter
types greatly, because they don’t actually damp any
part of the signal, but instead add a delayed version
of the input signal to the output.
w
What exactly is a Comb filter? A Comb filter is
basically a very short delay that can be controlled in
length and feedback. The delay time is so short that
you can’t hear its individual taps but a colorization of
the original signal created by peaks or holes in the
frequency spectrum. The frequency of the
colorization is set by the delay length, which is
controlled in the Largo through Cutoff, while the
amount of colorization is set by the Comb filter
feedback, which is controlled in the Largo through
Resonance
.
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To learn more about the comb filters please refer to
the corresponding paragraph in the Appendix of this
manual.
Env Amount -64...+63
Determines the amount of influence the filter envelope
has on the cutoff frequency. For positive settings, the filter
cutoff frequency is increased by the modulation of the
envelope, for negative settings, the cutoff frequency is
decreased. Use this parameter to change the timbre of the
sound over time. Sounds with a hard attack usually have a
positive envelope amount that makes the start phase
bright and then closes the filter to get a darker sustain
phase. String sounds, on the other hand, usually use a
negative envelope amount that gives a slow and dark
attack before the cutoff rises in the sustain phase.
Since there are two filters, you could use the Filter
Envelope on one of them, and another envelope on the
second filter, buy setting this parameter for that filter to
zero and use the Modulation Matrix for the other used
envelope. Specially with the two filters placed serial this
can bring nice effects.
Keytrack -200%...+196%
Determines how much the cutoff frequency depends on
the MIDI note number. The reference note for Keytrack is
E3, note number 64. For positive settings, the cutoff
frequency rises on notes above the reference note, for
negative settings the cutoff frequency falls by the same