Ventricular Fibrillation and Tachycardia detection from surface ECG using time-frequency representation images as input dataset for machine learning
Sign Up to like & getrecommendations! Published in 2017 at "Computer methods and programs in biomedicine"
DOI: 10.1016/j.cmpb.2017.02.010
Abstract: BACKGROUND AND OBJECTIVE To safely select the proper therapy for Ventricullar Fibrillation (VF) is essential to distinct it correctly from Ventricular Tachycardia (VT) and other rhythms. Provided that the required therapy would not be the… read more here.
Keywords: fibrillation; detection; time frequency; tachycardia ... See more keywords
Instantaneous Feature Extraction and Time–Frequency Representation of Rotor Purified Orbit Based on Vold–Kalman Filter
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2020.2983338
Abstract: As a well-known homologous information fusion technology, the full spectrum is widely used in orbit analysis of rotating machinery. However, due to the average effect of the Fourier transform, the instantaneous features of the axis… read more here.
Keywords: frequency representation; time; vold kalman; purified orbit ... See more keywords
Matching Pursuit Network: An Interpretable Sparse Time-Frequency Representation Method Toward Mechanical Fault Diagnosis
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Transactions on Neural Networks and Learning Systems"
DOI: 10.1109/tnnls.2024.3483954
Abstract: Rotatory machinery commonly operates in complex environments with strong noise and variable working conditions. Time-frequency representation offers a valuable method for capturing and analyzing nonstationary characteristics, making it particularly suitable for identifying transient fault-related features.… read more here.
Keywords: fault; time frequency; time; frequency representation ... See more keywords
A Covariant, Discrete Time-Frequency Representation Tailored for Zero-Based Signal Detection
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Signal Processing"
DOI: 10.1109/tsp.2022.3181342
Abstract: Recent work in time-frequency analysis proposed to switch the focus from the maxima of the spectrogram toward its zeros, which, for signals corrupted by Gaussian noise, form a random point pattern with a very stable… read more here.
Keywords: time frequency; time; frequency representation; signal detection ... See more keywords
Optimal Adaptive Time-Frequency Representation via Differentiable Short-Time Fourier Transform
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Signal Processing"
DOI: 10.1109/tsp.2025.3624477
Abstract: The short-time Fourier transform (STFT) is widely used for analyzing non-stationary signals. However, its performance is highly sensitive to its parameters, and manual or heuristic tuning often yields suboptimal results. To overcome this limitation, we… read more here.
Keywords: short time; time fourier; fourier transform; time ... See more keywords
Combination of Principal Component Analysis and Time-Frequency Representation for P-Wave Arrival Detection
Sign Up to like & getrecommendations! Published in 2019 at "Shock and Vibration"
DOI: 10.1155/2019/5961073
Abstract: Seismic events are phenomena which commonly occur in the mining industry. Due to their dangerous character, such information as the energy of the potential event, the location of hazardous regions with higher seismic activity is… read more here.
Keywords: frequency representation; detection; time; time frequency ... See more keywords
A Time–Frequency Representation Model for Seismic Ground Motions
Sign Up to like & getrecommendations! Published in 2020 at "Bulletin of the Seismological Society of America"
DOI: 10.1785/0120200123
Abstract: A probabilistic model of the time–frequency power spectral density (TFPSD) is presented. The model is developed, based on the time–frequency representation of records from strike-slip earthquakes, in which the time–frequency representation is obtained by applying… read more here.
Keywords: ground; frequency; time frequency; model ... See more keywords
Spatial frequency representation in V2 and V4 of macaque monkey
Sign Up to like & getrecommendations! Published in 2022 at "eLife"
DOI: 10.7554/elife.81794
Abstract: Spatial frequency (SF) is an important attribute in the visual scene and is a defining feature of visual processing channels. However there remains many unsolved questions about how primate visual cortex, in particular extrastriate areas… read more here.
Keywords: color; frequency; spatial frequency; frequency representation ... See more keywords