Results 11 to 20 of about 17,638,954 (262)

Sampling Trajectories for the Short-Time Fourier Transform [PDF]

open access: yesJournal of Fourier Analysis and Applications, 2022
AbstractWe study the problem of stable reconstruction of the short-time Fourier transform from samples taken from trajectories in $${\mathbb {R}}^2$$ R 2 .
Speckbacher M.
openaire   +5 more sources

Recasting the (Synchrosqueezed) Short-Time Fourier Transform as an Instantaneous Spectrum [PDF]

open access: yesEntropy, 2022
In a previous work, we proposed a time-frequency analysis called instantaneous spectral analysis (ISA), which generalizes the notion of the Fourier spectrum and in which instantaneous frequency is utilized to the fullest extent.
Steven Sandoval, Phillip L. De Leon
doaj   +2 more sources

Radar Detection-Inspired Signal Retrieval from the Short-Time Fourier Transform [PDF]

open access: yesSensors, 2022
This paper presents a novel adaptive algorithm for multicomponent signal decomposition from the time–frequency (TF) plane using the short-time Fourier transform (STFT).
Karol Abratkiewicz
doaj   +2 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

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

Exercise fatigue diagnosis method based on short-time Fourier transform and convolutional neural network [PDF]

open access: yesFrontiers in Physiology, 2022
Reasonable exercise is beneficial to human health. However, it is difficult for ordinary athletes to judge whether they are already in a state of fatigue that is not suitable for exercise.
Haiyan Zhu   +3 more
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

Radar Emitter Recognition Based on the Energy Cumulant of Short Time Fourier Transform and Reinforced Deep Belief Network [PDF]

open access: yesSensors, 2018
To cope with the complex electromagnetic environment and varied signal styles, a novel method based on the energy cumulant of short time Fourier transform and reinforced deep belief network is proposed to gain a higher correct recognition rate for radar ...
Xuebao Wang   +5 more
doaj   +2 more sources

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