Voice Processing Section - Native Instruments Reaktor Prism Manual

▪ [20] Modal Bank Display: For the Amplitudes and ratios (relative frequencies) of the
partials of the last voice played. The lines turn red for partials which are phase invert­
ed.
▪ [21] TRIG ZERO: If this switch is on, the signals of the Modal Bank are reset to zero with
each note-on. The result is a well reproducible start of the note, but can lead to clicks.
If the switch is off, the Modal Bank signals are continuous. By this you can avoid
clicks, but the behaving at impulses is less predictable and amplitudes might be less
stable.
5.11

Voice Processing Section

The Voice Processing section comprises two units: The first is a polyphonic delay and all­
pass filter with key tracking. While the delay applies equally to all frequencies (linear
phase response), the allpass has a non-linear phase response that can be shifted by the
PHASE parameter and introduces a frequency dependent delay.
You can use this section for filtering the output of the forward signal path or/and as impor­
tant part of the feedbacks structure. The filtering occurs as a comb filter effect when you
turn up the Delay amount in the mixer. Maximum cancellation at certain frequencies is
achieved at -0.5 and 0.5. The bipolar parameter allows for two types of comb filtering. At
negative settings the low end of the spectrum will be attenuated.
The delay and the allpass are always part of the polyphonic feedback path and greatly in­
fluence the phases of the feedback signals. The effect of feedback depends on the phase
of the signal. At zero degrees, the feedback is positive: it emphasizes the loop signal and
may lead to self-oscillation. At 180 degrees, it is negative feedback, which attenuates the
loop signal and damps resonances.
At high feedback amounts and low Decay time settings of the Modal Bank the loop will
behave more like a wave-guide, where the pitch of the tone is given by the delay's
rameter.
The second unit in the Voice Processing section is the polyphonic saturation unit behind
the delay, which works as a limiter for the feedback loop. You find an identical (mono­
phonic) saturator in the external feedback loop.
Overview of REAKTOR PRISM Ensemble
Voice Processing Section
TIME pa­
REAKTOR PRISM - Manual - 38