ColloquiaTalk by Georg Essl, University of Princeton, Wednesday, Jan. 30

[Margery Ishmael]

Computer Science Department - Talk

Date: Wednesday, January 30th
Time:	2:30 p.m.
Place: Ryerson 251

Speaker: Georg Essl, University of Princeton

Title: Real-time Sound Propagation Modeling: Rubbing, Sliding
and Scratching the Surface of Marimbas, Indian Drums and Wine Glasses

Abstract:
I will present a sound synthesis method which simulates the physics of 
sounding objects in real-time and allows for complex immediate 
interactions. Models of this type have previously been limited to systems 
which can be closely described by the one-dimensional wave equation or 
which would only allow for a restricted set of excitations to be modeled. I 
will describe how insisting on a propagational view allows us to derive 
models for a much larger class of sounding objects. This method, called 
"banded digital waveguides", allows for efficient simulation of vibrations 
of solid objects as well as of waves in more then one dimension. I'll 
explain the basic idea and the history that led to the idea and I'll give 
three examples of musical instruments that we have simulated: the 
vibraphone bar and bowed interaction, Indian tabla drums, and the glass 
harmonica (that is, one or more wine glasses).
I'll conclude by comparing this approach with alternative simulation methods.

http://www.cs.princeton.edu/~gessl/

Host: Michael O'Donnell

*The talk will be followed by refreshments in Ryerson 255*
Persons with disabilities who may need assistance, please call 773.834.8977

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Margery Ishmael
Secretary to the Chairman, Department of Computer Science
The University of Chicago
tel. 773.834.8977  fax. 773.702.8487