Registration is free and open to local audio engineers, mixing, recording and broadcasting professionals as well as students interested in these fields.Engineering Technology Hall, room 3185. Speakers include Bill Thompson, founder of Ashly Audio; Mark Bocko and Zhiyao Duan, both professors of electrical and computer engineering at the University of Rochester; Masahiro Ikeda and Hiraku Okumura, both members of the Research Group, Spatial Audio Systems, Yamaha Corp.; and Inyong Choi, research associate, Auditory Neuroscience Lab, Boston University.