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eess.SP2026
Time-Varying Spiky Wave-Shape Functions for Non-Stationary Signal Decomposition
Marcelo A. Colominas, Hau-Tieng Wu
We propose a novel framework for decomposing nonstationary spiky signals. Unlike classical adaptive non-harmonic models, which represent signals as amplitude- and frequency-modulat…
math.CA2026
On spectral interference of the short-time Fourier transform and its nonlinear variations
Shrikant Chand, James Nolen, Hau-Tieng Wu
Spectral interference, the frequency counterpart of the beating phenomenon in the time domain, can severely distort time-frequency representations (TFRs) in physical applications.…