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Figure 8. a) Typical dispersion of sound from a ground-based source showing the effects of warmer air
close to the ground a) and colder air close to the ground b), also, wind can affect sound energy and
dispersion c). Based on an image from Everest (1997)
VIrtUAL sPAtIAL sOUND
IMPLEMENtAtION—INtrODUctION
factors affecting the sonic environment of our
flying super-hero may also need to be considered,
such as turbulence, which itself can generate low
frequency sound in addition to scattering high
frequencies.
The level of fidelity in the implementation of
sound localization varies considerably from
system to system. Most of the time, constraints
such as network bandwidth, processing speeds,
storage restrictions, and memory considerations
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