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A flexible and approximate computing approach for time-frequency distributions

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2 Author(s)
Thuyen Le ; Inst. of Microelectron. Syst., Darmstadt Univ. of Technol., Germany ; Glesner, M.

Eigen-decomposition of the kernel allows fast computation of time-frequency distributions. This paper proposes a scheme which exploits further approximation by adapting dynamically the accuracy of spectrograms to the eigenvalue magnitudes. The approach employs the wavelet transform followed by block-recursive Fourier transform and a compensation network. It provides a set of parameters for the users to trade accuracy against computational complexity so that the implementation can be tailored to a specific application

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Signal Processing, IEEE Transactions on  (Volume:48 ,  Issue: 4 )