Multi-component instantaneous frequency estimation using signal decomposition and time-frequency filtering
Sign Up to like & getrecommendations! Published in 2020 at "Signal, Image and Video Processing"
DOI: 10.1007/s11760-020-01711-6
Abstract: A novel method is presented for the instantaneous frequency estimation of multi-component signals with crossing signatures in the time-frequency domain. The proposed method uses a combination of Eigen decomposition of time-frequency distributions and time-frequency filtering… read more here.
Keywords: instantaneous frequency; frequency; multi component; time frequency ... See more keywords
Analysis of derivative of instantaneous frequency and its application to voice activity detection
Sign Up to like & getrecommendations! Published in 2021 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2021.108116
Abstract: Abstract Recently, the use of speech processing in a time–frequency domain that handles the phase spectrum in addition to the amplitude one has been increasing because many studies have revealed the importance of phase. Inspired… read more here.
Keywords: frequency; voice activity; phase; derivative instantaneous ... See more keywords
Switchable instantaneous frequency measurement by optical power monitoring based on DP-QPSK modulator
Sign Up to like & getrecommendations! Published in 2022 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ac40ff
Abstract: We propose and analyze an instantaneous frequency measurement system by using optical power monitoring technique with improved resolution. The primary component adopted in the proposal is a dual-polarization quadrature phase shift keying (DP-QPSK) modulator which… read more here.
Keywords: qpsk modulator; frequency; measurement; frequency measurement ... See more keywords
A Demodulation Model of Dynamic Low-Finesse Fabry-Perot Cavity Based on the Instantaneous Frequency
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.2987466
Abstract: If the measurand changes during the spectrum acquisition process, it easily leads to the failure of the classic demodulation algorithms of low-finesse optical fiber Fabry-Perot (FP) sensors. To address this problem, a novel demodulation model… read more here.
Keywords: demodulation model; demodulation; low finesse; model ... See more keywords
Window Functions with Minimum-Sidelobe Derivatives for Computing Instantaneous Frequency
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3161543
Abstract: In the field of nonstationary signal analysis and processing, the short-time Fourier transform (STFT) is frequently used to convert signals into the time-frequency domain. The instantaneous frequency (IF) of the STFT is defined as the… read more here.
Keywords: time; frequency; stft; window functions ... See more keywords
Synchro-Reassigning Transform for Instantaneous Frequency Estimation and Signal Reconstruction
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2021.3100927
Abstract: Traditional signal postprocessing methods suffer from the repeated assignment problem (RAP), which can result in inaccurate instantaneous frequency (IF) estimation and signal recovery. In this article, to solve this problem, a novel time-frequency (TF) analysis… read more here.
Keywords: frequency estimation; frequency; estimation signal; instantaneous frequency ... See more keywords
Analysis of Reassignment Operators Used in Synchrosqueezing Transforms: With an Application to Instantaneous Frequency Estimation
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Signal Processing"
DOI: 10.1109/tsp.2021.3137080
Abstract: In this paper, our goal is first to investigate the behavior of reassignment operators used in synchrosqueezing transforms applied to multicomponent signals made of the superposition of amplitude and frequency modulated modes. Indeed, while these… read more here.
Keywords: operators used; synchrosqueezing transforms; frequency; used synchrosqueezing ... See more keywords
Automatic Music Classification Model Based on Instantaneous Frequency and CNNs in High Noise Environment
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Environmental and Public Health"
DOI: 10.1155/2022/1317439
Abstract: Automatic music classification has significant research implications because it is the foundation for quick and efficient music resource retrieval and has a wide range of possible applications. In this study, DL is used to extract… read more here.
Keywords: music; classification; automatic music; instantaneous frequency ... See more keywords
Application of instantaneous-frequency attribute and gamma-ray wireline logs in the delineation of lithology in Serbin field, Southeast Texas: A case study
Sign Up to like & getrecommendations! Published in 2018 at "Interpretation"
DOI: 10.1190/int-2018-0067.1
Abstract: Although Serbin field in Southeast Texas was discovered in 1987, lithologic and petrophysical properties in the southeastern part of the field have not been fully evaluated. We have generated instantaneous frequency from 3D seismic data… read more here.
Keywords: frequency; field; gamma ray; instantaneous frequency ... See more keywords
Mental fatigue decreases complexity: Evidence from multiscale entropy analysis of instantaneous frequency variation in alpha rhythm
Sign Up to like & getrecommendations! Published in 2022 at "Frontiers in Human Neuroscience"
DOI: 10.3389/fnhum.2022.906735
Abstract: Mental fatigue (MF) jeopardizes performance and safety through a variety of cognitive impairments and according to the complexity loss theory, should represent “complexity loss” in electroencephalogram (EEG). However, the studies are few and inconsistent concerning… read more here.
Keywords: mental fatigue; alpha rhythm; multiscale entropy; frequency variation ... See more keywords