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KEY tErMs AND DEFINItIONs

Auditory Scene Analysis: Determining what
is happening in the environment using only the
sense of hearing.
Continuous Parameterisation: A system that
has no discrete control states but is driven by a
set of real numbers.
Deferred Form: A property of something
that only becomes fully defined at the moment
of use. For example, stock market investments
have a deferred value because you don't know
what they will be worth in 20 years.
DSP: Digital signal processing. In our case,
computer code designed to create or modify audio
signals.
Dynamics: A branch of mathematics or physics
concerning the changes occurring within a system.
Dataflow: A programming paradigm based on
flow. Usually with a visual (patching) front-end
in which boxes represent transformations/func-
tions and lines are wires that connect the boxes
together. Examples include Max/MSP, Pure Data,
CPS, Reaktor.
Excitation: The means by which energy
becomes vibration in a sounding object. Often
passing from an outside object to the object that
makes the sound (although self-excitation by in-
ternal stress is possible). Examples are collision,
friction, field and proximity coupling, plucking,
turbulence, and induction.
Finite Difference (Also, First Difference): A
DSP scheme where mathematical differentiation
is represented discretely.
Finite Element: A part in a computational
model in which a continuum is broken down into
small, notionally atomic parts, each with simple

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