[talks] A Misra preFPO

Melissa M Lawson mml at CS.Princeton.EDU
Tue Apr 29 13:45:19 EDT 2008

Ananya Misra will present her preFPO on Tuesday May 6 at 1PM in Room 302 (note room).
The members of her committee are:  Perry Cook, advisor; Georg Essl and Dan Trueman, 
readers; Ken Steiglitz and Szymon Rusinkiewicz, nonreaders.  Everyone is invited to attend

her talk.  Her abstract follows below.

TAPESTREA is a sound design and composition framework that facilitates the creation of new
sound from existing digital audio recordings, through interactive analysis, transformation
and re-synthesis. During analysis, sinusoidal modeling and transient detection techniques
are used to parametrically extract desired sound templates of different types:
sinusoidal events, transient events, and stochastic background. Each extracted template is
transformed and synthesized independently using an appropriate technique, such as
sinusoidal re-synthesis or wavelet tree learning. This allows specialized transformations
on each template based on its type; sinusoidal templates undergo real-time, large-scale
time and frequency transformations, while background is generated parametrically from
extracted samples. The user interacts with TAPESTREA via a set of graphical interfaces.
Synthesis is further controlled through ChucK scripts, which allow simultaneous, precise
manipulation of many parameters. They also allow control via external input devices and
user-defined GUI elements.

These combined techniques form a workbench for completely transforming a sound scene,
dynamically generating soundscapes, or creating musical tapestries by weaving together
transformed elements from different recordings. Thus, TAPESTREA introduces a new paradigm
for composition, sound design, and other sonic sculpting tasks. Work on further improving
the system includes user studies to compare alternative algorithms for generating
stochastic background noise.

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