GFI System SYNESTHESIA - Formant Algorithm; Speed and Emphasis Controls; Tweak: Mix Control; Secondary Phrase and Glissando Options

10
AlgorithmsReference
SYNESTHESIA

(FirmwareV2.0.x)
09.Formant
ModulationSpeed
[Tweak]=Mix
Controlsthewetanddrymix.
[Depth]=Emphasis
ThisalgorithmappliesasetofFormantfilters,whichmimicthecharacteristicofhumanvocal
tract.Anysignalthatgoesthroughthisalgorithmwillsoundasifitwasradiatedthroughahu‐
man’smouth.Spectrally‐richsignalsuchasanoverdrivenguitarsoundexcitesthesefiltersthe
best,thereforetheoptimalplacementisafter(post)overdriveordistortioneffect.
SP2‐Glissando:
 0%
 50%
 75%
 100%
SP1‐Phrases:
 Phrase1
 Phrase2
 Phrase3
 Phrase4
SP3‐QCurve:[0‐3]
Setsthe‘sharpness’ofthefilter
resonance.Highervalue=more
pronouncedvoicing.
<Filters> 
InManualmodetheformantfrequenciesofthefiltersarecontrolledbytheSpeedknob.
Tips:Useanexpressionpedal(mappedtoSpeedknob)inManualmode,andyougetyour‐
selfawaheffectwithhumanvocalflavors.

Forthefirst5modes(Phrase1troughPhrase5)thefiltersaremodulatedusingsmooth
waveforms.FortheGarbledandRandommodesthefiltersaremodulatedusingstepped
waveforms,thisiswheretheGlissandoparametertakeseffect.
PRIMARY SECONDARY
Glissando0% Glissando
Crispsteps Glidingsteps
Tap‐tempo/MidiClock 
YES
 Phrase5
 Garbled
 Random
 Manual