ASA 129th Meeting - Washington, DC - 1995 May 30 .. Jun 06

2aSP11. Audio compression based on sine-crossing representations of signals.

Michael L. Hilton

Prasanjit Panda

Dept. of Comput. Sci., The Univ. of South Carolina, Columbia, SC 29208

The sampling theorem of Bar-David [J. Bar-David, Info. Control 24, 36--44 (1974)] provides an implicit representation of bandlimited signals using their crossings with a sine function. This sine function is chosen in a way that guarantees a unique representation of the signal. On a finite signal, this leads to a multiplicative representation involving a Riesz product whose roots form the representation of the original signal. These roots can be encoded to provide high-quality, near lossless audio compression. The sine crossing representation can also be combined with the wavelet transform to provide further compression. [Work supported by ONR.]

All posters will be on display from 8:30 a.m. to 12:00 noon. To allow contributors an opportunity to see other posters, contributors of odd-numbered papers will be at their posters from 8:30 to 10:15 a.m. and contributors of even-numbered papers will be at their posters from 10:15 a.m. to 12:00 noon.