Time-frequency transforms of white noises and Gaussian analytic functions

R Bardenet, A Hardy - Applied and computational harmonic analysis, 2021 - Elsevier
A family of Gaussian analytic functions (GAFs) has recently been linked to the Gabor
transform of Gaussian white noises [4]. This answered pioneering work by Flandrin [10], who …

Improved S-transform for time-frequency analysis for power quality disturbances

C Liang, Z Teng, J Li, W Yao, L Wang… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Renewable energy sources will be more vigorously deployed under the global trend of
carbon emission reduction. The connection of numerous renewable energy sources poses …

Multiple impact factor based accuracy analysis for power quality disturbance detection

Z Yang, H Hua, J Cao - CSEE Journal of Power and Energy …, 2020 - ieeexplore.ieee.org
Nowadays, power quality problems are affecting people's daily life and production activities.
With an aim to improve disturbance detection accuracy, a novel analysis approach, based …

A Faber–Krahn inequality for Wavelet transforms

JPG Ramos, P Tilli - Bulletin of the London Mathematical …, 2023 - Wiley Online Library
For some special window functions ψ α∈ H 2 (C+) ψ_α∈H^2(C^+), we prove that, over all
sets Δ⊂ C+ Δ⊂C^+ of fixed hyperbolic measure ν (Δ) ν(Δ), those for which the Wavelet …

AAFA-Net: Adaptive amplitude-frequency attention network for fetal monitoring from noninvasive abdominal recordings

Y Liao, X Wang, Y Han, Y Deng - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
The noninvasive fetal electrocardiogram (FECG) is helpful for fetal well-being monitoring.
However, it is difficult to obtain high-quality FECG signals because of the maternal …

[HTML][HTML] Phase retrieval of bandlimited functions for the wavelet transform

R Alaifari, F Bartolucci, M Wellershoff - Applied and Computational …, 2023 - Elsevier
We study the recovery of square-integrable signals from the absolute values of their wavelet
transforms, also called wavelet phase retrieval. We present a new uniqueness result for …

Time-frequency phase retrieval for audio—the effect of transform parameters

A Marafioti, N Holighaus… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In audio processing applications, phase retrieval (PR) is often performed from the magnitude
of short-time Fourier transform (STFT) coefficients. Although PR performance has been …

Real time speech recognition based on PWP thresholding and MFCC using SVM

W Helali, Ζ Hajaiej, A Cherif - Engineering, Technology & Applied Science …, 2020 - etasr.com
The real-time performance of Automatic Speech Recognition (ASR) is a big challenge and
needs high computing capability and exhaustive memory consumption. Getting a robust …

[PDF][PDF] Donoho-Logan large sieve principles for the wavelet transform

LD Abreu, M Speckbacher - arXiv preprint arXiv:2210.13056, 2022 - researchgate.net
In this paper we formulate Donoho and Logan's large sieve principle for the wavelet
transform on the Hardy space, adapting the concept of maximum Nyquist density to the …

Grid-based decimation for wavelet transforms with stably invertible implementation

N Holighaus, G Koliander, C Hollomey… - … on Audio, Speech …, 2023 - ieeexplore.ieee.org
The constant center frequency to bandwidth ratio (Q-factor) of wavelet transforms provides a
very natural representation for audio data. However, invertible wavelet transforms have …