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Optimal Wavelet Bases for Audio Compression

Perhaps the most well known implementation of wavelet compression, today, is JPEG 2000. By representing data in terms of a series of scaling coefficients and time shifts of a wavelet basis, we can store data efficiently with minimal loss.  This type of compression can be used for signals which exist in any dimension. The problem is, choosing a wavelet basis which suits your data. And while there is a proof of existence of an optimal wavelet basis, there is no common procedure to find it. Through experimention and analysis using IACS supercomputers, we hope to uncover this procedure. Wavelets have uses from data compression, to biomedical and astrophysical applications, and of course, music.

Bio

Alex is a first-year Ph.D student in the Applied Mathematics and Statistics department. During his undergrad career at Stony Brook University, he studied under Professor Yuefan Deng, with whom he will complete his doctoral research along with Professor Margaret Schedel of the Music department. His past research topics include optimal graphs for supercomputer interconnect topologies, and creating a global network of supercomputers over InfiniBand.

Speaker

Alexander Nodeland

Date

Wednesday, December 7, 2016

Time

1:15 pm - 2:15 pm

Location

IACS Seminar Room