Results 11 to 20 of about 150,152 (290)

On the clifford short-time fourier transform and its properties [PDF]

open access: yesApplied Mathematics and Computation, 2022
In this paper we investigate how the short-time Fourier transform can be extended in a Clifford setting. We prove some of the main properties of the Clifford short-time Fourier transform such as the orthogonality relation, the reconstruction property and
Antonino De Martino
core   +7 more sources

The Feedforward Short-Time Fourier Transform

open access: yesIEEE Transactions on Circuits and Systems II: Express Briefs, 2016
This brief presents the feedforward short-time Fourier transform (STFT). This new approach is based on reusing the calculations of the STFT at consecutive time instants.
Garrido Gálvez, Mario   +1 more
core   +5 more sources

Directional short-time Fourier transform of distributions

open access: yesJournal of Inequalities and Applications, 2016
In this paper we consider the directional short-time Fourier transform (DSTFT) that was introduced and investigated in (Giv in J. Math. Anal. Appl. 399:100-107, 2013). We analyze the DSTFT and its transpose on test function spaces S ( R n ) $\mathcal {S}(
Katerina Hadzi-Velkova Saneva   +1 more
doaj   +4 more sources

Short-Time Fourier Transform Based on Metaprogramming and the Stockham Optimization Method [PDF]

open access: yesSensors, 2021
The extension for high-performance STFT (Short-Time Fourier Transform) algorithm written entirely in Java language for non-parallel computations is presented in the current paper.
Grzegorz Rybak, Krzysztof Strzecha
doaj   +2 more sources

Identifying Methamphetamine Abstainers With Convolutional Neural Networks and Short-Time Fourier Transform [PDF]

open access: yesFrontiers in Psychology, 2021
Few studies have investigated the functional patterns of methamphetamine abstainers. A better understanding of the underlying neurobiological mechanism in the brains of methamphetamine abstainers will help to explain their abnormal behaviors.
Xin Lai   +12 more
doaj   +2 more sources

Short-time Fourier transform and superoscillations

open access: yesApplied and Computational Harmonic Analysis
In this paper we investigate new results on the theory of superoscillations using time-frequency analysis tools and techniques such as the short-time Fourier transform (STFT) and the Zak transform.
Alpay, Daniel   +3 more
core   +6 more sources

Polynomial Phase Estimation Based on Adaptive Short-Time Fourier Transform [PDF]

open access: yesSensors, 2018
Polynomial phase signals (PPSs) have numerous applications in many fields including radar, sonar, geophysics, and radio communication systems. Therefore, estimation of PPS coefficients is very important. In this paper, a novel approach for PPS parameters
Fulong Jing   +4 more
doaj   +2 more sources

2D Short-Time Fourier Transform for local morphological analysis of meibomian gland images. [PDF]

open access: yesPLoS ONE, 2022
Meibography is becoming an integral part of dry eye diagnosis. Being objective and repeatable this imaging technique is used to guide treatment decisions and determine the disease status.
Kamila Ciężar, Mikolaj Pochylski
doaj   +2 more sources

Electroretinogram Analysis Using a Short-Time Fourier Transform and Machine Learning Techniques [PDF]

open access: yesBioengineering
Electroretinography (ERG) is a non-invasive method of assessing retinal function by recording the retina’s response to a brief flash of light. This study focused on optimizing the ERG waveform signal classification by utilizing Short-Time Fourier ...
Faisal Albasu   +9 more
doaj   +2 more sources

ESSENTIAL PROPERTIES RELATED TO SHORT-TIME FRACTIONAL FOURIER TRANSFORM [PDF]

open access: yesJurnal Matematika UNAND
We start by defining the short-time fractional Fourier transform in this paper, which is a natural generalization of the fractional Fourier transform.
SRI SULASTERI   +2 more
doaj   +2 more sources

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