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IEICE TRANSACTIONS on Fundamentals

Fast and Accurate Generalized Harmonic Analysis and Its Parallel Computation by GPU

Hisayori NODA, Akinori NISHIHARA

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Summary :

A fast and accurate method for Generalized Harmonic Analysis is proposed. The proposed method estimates the parameters of a sinusoid and subtracts it from a target signal one by one. The frequency of the sinusoid is estimated around a peak of Fourier spectrum using binary search. The binary search can control the trade-off between the frequency accuracy and the computation time. The amplitude and the phase are estimated to minimize the squared sum of the residue after extraction of estimated sinusoids from the target signal. Sinusoid parameters are recalculated to reduce errors introduced by the peak detection using windowed Discrete-Time Fourier Transform. Audio signals are analyzed by the proposed method, which confirms the accuracy compared to existing methods. The proposed algorithm has high degree of concurrency and is suitable to be implemented on Graphical Processing Unit (GPU). The computational throughput can be made higher than the input audio signal rate.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E92-A No.3 pp.745-752
Publication Date
2009/03/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E92.A.745
Type of Manuscript
Special Section PAPER (Special Section on Latest Advances in Fundamental Theories of Signal Processing)
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