Results 1 to 10 of about 2,432 (95)

Segmentation of Killer Whale Vocalizations Using the Hilbert-Huang Transform [PDF]

open access: goldEURASIP Journal on Advances in Signal Processing, 2008
The study of cetacean vocalizations is usually based on spectrogram analysis. The feature extraction is obtained from 2D methods like the edge detection algorithm.
Olivier Adam
doaj   +2 more sources

Quantitative Identification of Pulse-Like Ground Motions Based on Hilbert–Huang Transform [PDF]

open access: goldShock and Vibration, 2021
Aiming to address the problem of pulse-like ground motions being difficult to identify, this paper refines the Baker’s wavelet-based pulse-like ground motions identification method, followed by a new pulse-like ground motion identification method based ...
Zhen Liu
doaj   +2 more sources

Time-trend analysis of the center frequency of the intrinsic mode function from the Hilbert–Huang transform of electroencephalography during general anesthesia: a retrospective observational study [PDF]

open access: goldBMC Anesthesiology, 2023
Background Anesthesiologists are required to maintain an optimal depth of anesthesia during general anesthesia, and several electroencephalogram (EEG) processing methods have been developed and approved for clinical use to evaluate anesthesia depth ...
Yurie Obata   +3 more
doaj   +2 more sources

Hilbert–Huang Transform Analysis of Quasiperiodic Oscillations in MAXI J1820+070

open access: greenThe Astrophysical Journal, 2023
We present a time-frequency analysis, based on the Hilbert–Huang transform, of the evolution of the low-frequency quasiperiodic oscillations observed in the black hole X-ray binary MAXI J1820+070.
Wei Yu   +16 more
doaj   +3 more sources

An instantaneous frequency analysis method of stay cables

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
This paper presents and evaluates in detail a conjugate-pair decomposition method for tracking the instantaneous frequency of a vibration signal by processing only three (or more) most recent data points, and Probability Box theory was employed to obtain
Rumian Zhong, P Frank Pai
doaj   +1 more source

Crack detection in beams using Hilbert-Huang transform [PDF]

open access: yesمجله مدل سازی در مهندسی, 2018
This study presents a non-destructive method for detecting location and depth of crack in beams. The method utilizes Hilbert-Huang Transform (HHT) as a time-series analysis technique.
Mohammad Reza Galeban, Shapour Moradi
doaj   +1 more source

Representation Learning for EEG-Based Biometrics Using Hilbert–Huang Transform

open access: yesComputers, 2022
A promising approach to overcome the various shortcomings of password systems is the use of biometric authentication, in particular the use of electroencephalogram (EEG) data.
Mikhail Svetlakov   +4 more
doaj   +1 more source

Data Mining Applied to the Electrochemical Noise Technique in the Time/Frequency Domain for Stress Corrosion Cracking Recognition

open access: yesCorrosion and Materials Degradation, 2023
In this paper, time/frequency domain data processing was proposed to analyse the EN signal recorded during stress corrosion cracking on precipitation-hardening martensitic stainless steel in a chloride environment.
Luigi Calabrese   +2 more
doaj   +1 more source

Research on Roller Status Diagnosis of CRDM Based on SWT and HHT [PDF]

open access: yesE3S Web of Conferences, 2021
For the control rod drive mechanism roller vibration signal’s characteristics of nonlinear and nonstationary. Based on actual equipment life experiment and roller fault experiment, a status diagnosis method of roller of control rod drive mechanism based ...
Zhang Liming   +4 more
doaj   +1 more source

Power-Line Partial Discharge Recognition with Hilbert–Huang Transform Features

open access: yesEnergies, 2022
Partial discharge (PD) has caused considerable challenges to the safety and stability of high voltage equipment. Therefore, highly accurate and effective PD detection has become the focus of research.
Yulu Wang, Hsiao-dong Chiang, Na Dong
doaj   +1 more source

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