Results 31 to 40 of about 17,536,892 (222)
Frontiers 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
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On the Quaternionic Short-Time Fourier and Segal–Bargmann Transforms [PDF]
Mediterranean Journal of Mathematics, 2021 AbstractIn this paper, we study a special one-dimensional quaternion short-time Fourier transform (QSTFT). Its construction is based on the slice hyperholomorphic Segal–Bargmann transform. We discuss some basic properties and prove different results on the QSTFT such as Moyal formula, reconstruction formula and Lieb’s uncertainty principle.
Antonino De Martino, Kamal Diki
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IJAIN (International Journal of Advances in Intelligent Informatics), 2017 Time-Frequency Analysis on Gong Timor Music has an important role in the application of signal-processing music such as tone tracking and music transcription or music signal notation.
Yovinia Carmeneja Hoar Siki +1 more
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INDUCED DRAFT FAN DOMINANT FREQUENCY DETECTION USING SHORT-TIME FOURIER TRANSFORM METHOD
Rekayasa Mesin, 2023 Weak suction and large vibrations indicate an Induced Draft Fan (IDF) problem. The Fast Fourier Transform (FFT) method cannot be applied to non-stationary vibration signals.
Dedik Romahadi
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Random fractional Fourier transform : stochastic perturbations along the axis of propagation [PDF]
, 1999 The fractional Fourier transform (FRT) is known to be optically implementable with use of a medium with a perfect radial quadratic-index profile. Using the quantum-mechanical operator formalism, we examine the effects on the FRT action of such a medium
Abe, Sumiyoshi, Sheridan, John T.
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DCFF-MTAD: A Multivariate Time-Series Anomaly Detection Model Based on Dual-Channel Feature Fusion
Sensors, 2023 The detection of anomalies in multivariate time-series data is becoming increasingly important in the automated and continuous monitoring of complex systems and devices due to the rapid increase in data volume and dimension. To address this challenge, we
Zheng Xu +3 more
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Zeros of the Wigner distribution and the short-time Fourier transform [PDF]
Revista Matemática Complutense, 2019 AbstractWe study the question under which conditions the zero set of a (cross-) Wigner distribution W(f, g) or a short-time Fourier transform is empty. This is the case when both f and g are generalized Gaussians, but we will construct less obvious examples consisting of exponential functions and their convolutions.
Karlheinz Gröchenig +2 more
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Short-time Fourier transform and superoscillations
Applied and Computational Harmonic Analysisto appear in Applied and Computational Harmonic ...
Daniel Alpay +3 more
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Cross-Term Suppression in Time Order Distribution for AWGN Signal [PDF]
Mehran University Research Journal of Engineering and Technology, 2017 A technique of cross-term suppression in WD (Wigner Distribution) for a multi-component signal that is embedded WGN (White Gaussian Noise) is proposed.
WAQAS MAHMOOD +3 more
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Intra-pulse modulation recognition using short-time ramanujan Fourier transform spectrogram
EURASIP Journal on Advances in Signal Processing, 2017 Intra-pulse modulation recognition under negative signal-to-noise ratio (SNR) environment is a research challenge. This article presents a robust algorithm for the recognition of 5 types of radar signals with large variation range in the signal ...
Xiurong Ma, Dan Liu, Yunlong Shan
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