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Pitch Shifting
A fun demonstration of pitch shifting sounds.
The SeiON sound object used here, SeionPitch, is not of the core package due to its limited functionality (and single redeeming point): pitch shifting.
It's pretty amazing how much of a different mood it gives by shifting down to rate 0.3 or 0.8 (Splinter Cell anyone?). Similarly, when one approaches rate 40 it can be mildly terrifying (for the speakers).
Comes with tutorial.