Malström Shift control explanation
Can somebody explain me please how the Shift knob works in the Malström synth? It's kinda confusing to me that what is that controls? I read an article about Malström and it said:
"You may have noticed that when you pitch the oscillator up, as well as the speed staying constant, the characteristic 'chipmunk effect' associated with speeding up a vocal sample is not produced. An advantage of granular synthesis is that the formants in the sound (the resonant frequencies of a sound source that determine some of its character) gain a degree of independence from the parameters of pitch and speed. The Shift control adjusts these formant characteristics of the sound.
Push up Shift and you'll hear that you can, in fact, add the 'chipmunk' sound without speeding up the sample. The Shift control dramatically alters the tonal and harmonic characteristics of the sound sources, and can add lots of movement to a patch when swept with an LFO."
I understood that how it controls the playback speed and the pitch independently but how can it separate the pitch and the overtones? I searched about that topic but I couldn't find anything.
Thanks for any help!