10-86
KDFX Reference
KDFX Algorithm Specifications
The Þgures below show Pt PkShape of -1.0 and 1.0, for a Pitch of C6 and a PkSplit of 0%.
Figure 10-33 Response of Pitcher with different PkShape settings.
Applying Pitcher to sounds such as a single sawtooth wave will tend to not produce much output, unless
the sawtooth frequency and the Pitcher frequency match or are harmonically related, because otherwise
the peaks in the input spectrum won't line up with the peaks in the Pitcher Þlter. If there are enough peaks
in the input spectrum (obtained by using sounds with noise components, or combining lots of different
simple sounds, especially low pitched ones, or severly distorting a simple sound) then Pitcher can do a
good job of imposing its pitch on the sound.
Multiple Pitcher algorithms can be run (yes, it takes all of KDFX to get three) to produce chordal output.
A vocoder-like effect can be produced, although in some sense it works in exactly an opposite way to a real
vocoder. A real vocoder will superimpose the spectrum of one signal (typically speech) onto a musical
signal (which has only a small number of harmonically related spectral peaks.) Pitcher takes an input such
as speech, and then picks out only the components that match a harmonic series, as though they were from
a musical note.
Configurable Flange
The ßange in alg 721 is a conÞgurable ßange. Refer to the section on ConÞgurable Chorus and Flange for
details about this effect.
Chorus
The chorus used in alg 720 is a basic dual channel chorus. Refer to Chorus documentation for more
information on the effect.
Parameters for MonoPitcher + Chor
Page 1
Wet/Dry 100 to 100%wet Out Gain Off, -79.0 to 24.0 dB
Mix Pitchr -100 to 100%
Mix Chorus -100 to 100%
Pt/Dry->Ch 0 to 100%
PeakShape = -1.0
PeakSplit = 0%
Khz
dB
PeakShape = 1.0
PeakSplit = 0%
Khz
dB
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