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Because the combinations of formants are stepped,
modulating the WAVESHAPE results in musical arpeggios.
Noise Mode
(OSC OUT, MODE connected to "-")
The Noise mode on Kastle is implemented by a granular
playback of the flash memory (where the program is stored)
of the sound processing chip. In other words it is a data
player of a piece of computer code (that runs the sound
core of the Kastle synth) that has very distinct sonic
qualities on its own - often referred to as "glitch" in aesthetic
terms.
However this mode is so purposeful that instead of talking
about a mistake we should be talking about being true to
what the true nature of Kastle truly is in very modernistic
terms (it is a digital synthesizer).
The PITCH controls the speed of the playback, the
WAVESHAPE controls the loop length of the playback and
the TIMBRE controls the secondary oscillator that
modulates the amplitude of the final signal.
Tonal Noise Mode
(SECONDARY OSC OUT, MODE connected to "-")
A byproduct of the Noise mode while enhancing the PITCH
of the secondary oscillator which is tuned a few octaves
higher than in the normal noise mode.
In this mode the oscillator is implemented as a thru zero
oscillator meaning that from a certain position (11 o'clock)
the PITCH rises in both directions but in a di erent phase.
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