Combination of sound, voice and growl with same note
Same, with singing another note
Slap with a multiphonic
Mix a multiphonic slap with an open slap
Bisbigliandi with a split tone over with a low region
Trill with a low region, variations of speed
Multiphonic, split tone
Advice: don't superimpose too many effects
Big descending scale with split tones
With shouting in addition
Explanation of this superposition
Art of Metal III, Yann Robin - 0:05:13 - 0:05:38
Effects research advice
Le Lieu et la Formule, Franck Bedrossian, bar 95 - 0:06:09 - 1:00:10.4