EE 695M

Electro- and Biomedical Acoustics


3 credit hours
Spring semesters alternate years

instructor(s)
	G. R. Wodicka and D. G. Meyer

prerequisites
	Graduate standing

description
An introduction to research topics in electro- and biomedical acoustics.  Topics include sonic waveguides, sound radiation, room acoustics, sound measurement, digital audio, biomedical applications, and sound reinforcement applications.

text
	N. H. Fletcher, Acoustic Systems in Biology, Oxford University Press, 1992.

outline

Week            Topics
1	Introduction:  physics, wave equations, reflections.
2-3	Sonic waveguides:  propagation in pipes, electrical circuit analogies, acoustical filters, applications.
4	Radiation of sound: sources, spatial/frequency dependence (directivity, time delay spectrometry)
5-6 	Room acoustics: modal patterns, source interactions, early/late reflections, reverberation time estimations, ray tracing, applications.
7	Measurement: microphones, hearing, SPL.
8	Digital audio:  current trends, use of DSP, future technologies.
9-11	Biomedical applications:  heart sounds, lung sounds, joint sounds, muscle sounds, audiometric evaluation, acoustic guidance systems.
12-13	 Sound reinforcement applications:  system design methodologies and tradeoffs, intelligibility measures, array design (beamforming, shading, delay steering, DSP requirements), CAD tools for mapping SPL of direct sound field, design/simulation examples.
14-15	Student research paper presentations

For further information regarding the Biomedical Engineering Program at Purdue University contact the Biomedical Engineering Graduate Office at (317) 494-5730 bmeprogram@ecn.purdue.edu