Time-Frequency Analysis of Systems with Changing Dynamic Properties [PDF]
, 2006 The Wigner-Ville Distribution, and related refinements, represent a class of advanced time-frequency analysis tools that are distinguished from Fourier and wavelet methods by an increase in resolution in the time frequency plane. Time-frequency analysis
Bradford, Samuel Case, V +1 more
core +1 more source
Borneo Lute ‘Sape’: The Frequency Spectrum and Time Frequency Analysis (TFA)
BioResources, 2023 Sound elements were studied for a six strings sape, a traditional instrument. The frequency was evaluated using a frequency spectrum and a time frequency plane. PicoScope oscilloscopes and Adobe Audition version 3 were used to record the acoustic spectra.
Sinin Hamdan +4 more
doaj +2 more sources
ANALYSIS OF TEMPORAL AND FREQUENCY CHARACTERISTICS OF SIMULTANEOUS GEODEFORMATION SIGNALS REGISTERED AT “KARYMSHINA” SITE [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2019 Simultaneous geodeformational observations have been carried out from 2016 to the present time at “Karymshina” site on Kamchatka. A laser deformograph-interferometer and a three-component seismoacoustic receiver were installed to conduct these ...
M. A. Mishchenko +2 more
doaj +1 more source
Robust sparse time‐frequency analysis for data missing scenarios
IET Signal Processing, 2023 Sparse time‐frequency analysis (STFA) can precisely achieve the spectrum of the local truncated signal. However, when the signal is disturbed by unexpected data loss, STFA cannot distinguish effective signals from missing data interferences.
Yingpin Chen, Yuming Huang, Jianhua Song
doaj +1 more source
Joint time-frequency analysis on space-time-coding digital metasurfaces
JPhys Photonics, 2022 Space-time and time-varying metastructures have attracted a lot of research interest in recent years. On the other hand, digital programmable metasurfaces have also gained great attention owing to their powerful capabilities in controlling ...
Xiao Qing Chen +5 more
doaj +1 more source
A Time–Frequency Analysis Perspective on Feynman Path Integrals
, 2020 The purpose of this expository paper is to highlight the starring role of techniques from time–frequency analysis in some recent contributions concerning the mathematical theory of Feynman path integrals.
S. Ivan Trapasso, Trapasso S. I.
core +1 more source
Time-frequency methods for non-stationary statistical signal processing
, 2008 Time-frequency (TF) methods can be used to analyze and process non-stationary random processes in an efficient and intuitive manner. This chapter presents some of the non-parametric methods in this area.
Matz, Gerald, Hlawatsch, Franz
core +4 more sources
A new transform for time-frequency analysis
IEEE Transactions on Signal Processing, 1992 The psi-decomposition of a signal, in which the signal is written as a weighted sum of certain elementary synthesizing functions, is described. The set S of synthesizing functions consists of dilated and translated copies of two parent functions, which are concentrated in both the time and the frequency domains.
Kumar, Arun +3 more
openaire +6 more sources
Railway wheel-flat and rail surface defect modelling and analysis by time–frequency techniques [PDF]
, 2013 Damage to the surface of railway wheels and rails commonly occurs in most railways. If not detected, it can result in rapid deterioration and possible failure of rolling stock and infrastructure components causing higher maintenance costs.
Liang, B. +7 more
core +1 more source
Time-frequency statistical characteristics of cyclostationary signals [PDF]
, 1998 Time-frequency statistical characteristics of cyclostationary signals are studied. The characteristics considered are real and complex instantaneous autospectra.
Vokurka, Karel
core +1 more source