A
Andreas Spanias
Researcher at Arizona State University
Publications - 512
Citations - 8918
Andreas Spanias is an academic researcher from Arizona State University. The author has contributed to research in topics: Speech coding & Speech processing. The author has an hindex of 36, co-authored 490 publications receiving 7895 citations. Previous affiliations of Andreas Spanias include Arizona's Public Universities & Intel.
Papers
More filters
Proceedings ArticleDOI
Direct coding of a class of non-stationary signals based on mixed transforms
Wasfy B. Mikhael,Andreas Spanias +1 more
TL;DR: A mixed Fourier-Walsh signal representation is proposed for transform coding, and basis functions from two transforms are used, namely, the discrete Fourier transform (DFT) and the Walsh-Hadamard transform (WHT).
Proceedings ArticleDOI
A new sinusoidal phase modeling algorithm
S. Ahmadi,Andreas Spanias +1 more
TL;DR: Performance analysis on a large speech database indicates considerable improvement in temporal and spectral matching between the original and reconstructed signals as compared to other sinusoidal phase models as well as improved subjective quality of the reproduced speech.
Proceedings ArticleDOI
Global Optimization of Graph Filters with Multiple Shift Matrices
TL;DR: This work proposes a new graph filter with multiple graph shift matrices that can provide better classification performance when the feature quality is uneven and finds the mapping from the optimum relaxed parameter set to original parameter set, which technically provides the globally optimum solution.
Proceedings ArticleDOI
Electromigration of Charged Polystyrene Beads Through Silicon Nanopores Filled With Low Ionic Strength Solutions
Punarvasu Joshi,Trupthi Mathew,Leo Petrossian,Shalini Prasad,Michael Goryll,Andreas Spanias,Trevor Thornton +6 more
TL;DR: In this paper, the influence of electrical double layer overlap on the electromigration of polystyrene beads (PSB) through an array of 25 cylindrical nanopores has been demonstrated.