Results 1 to 10 of about 6,932 (196)

Short-Time Fourier Transform with the Window Size Fixed in the Frequency Domain (STFT-FD): Implementation [PDF]

SoftwareX, 2018
The Short-Time Fourier Transform (STFT) is widely used to convert signals from the time domain into a time–frequency representation. This representation has well known limitations regarding time–frequency resolution.
Carlos Mateo, Juan Antonio Talavera
doaj   +7 more sources

FREQUENCY COMPONENT EXTRACTION OF HEARTBEAT CUES WITH SHORT TIME FOURIER TRANSFORM (STFT) [PDF]

Jurnal Sains Dasar, 2017
Electro-acoustic human heartbeat detector have been made with the main parts : (a) stetoscope (piece chest), (b) mic condenser, (c) transistor amplifier, and (d) cues analysis program with MATLAB.
Sumarna Sumarna, Agus Purwanto, Dyah Kurniawati Agustika   +2 more
doaj   +3 more sources

Area-Efficient Short-Time Fourier Transform Processor for Time–Frequency Analysis of Non-Stationary Signals

Applied Sciences, 2020
In this paper, we propose an area-efficient short-time Fourier transform (STFT) processor that can perform time–frequency analysis of non-stationary signals in real time, which is essential for voice or radar-signal processing systems.
Hohyub Jeon, Yongchul Jung, Seongjoo Lee, Yunho Jung   +3 more
doaj   +4 more sources

Recasting the (Synchrosqueezed) Short-Time Fourier Transform as an Instantaneous Spectrum

Entropy, 2022
In a previous work, we proposed a time-frequency analysis called instantaneous spectral analysis (ISA), which generalizes the notion of the Fourier spectrum and in which instantaneous frequency is utilized to the fullest extent.
Steven Sandoval, Phillip L. De Leon
doaj   +2 more sources

STFT-based multisynchrosqueezing transform using a second-order signal model for seismic data analysis [PDF]

Scientific Reports
Since time-frequency analysis (TFA) technique can reveal the local properties of seismic signals, it has been widely applied in seismic data analysis.
Bing Pingping, Ma Yabin, Wang Zichun, Jiang Yetao, Liu Wei   +4 more
doaj   +2 more sources

Comparisons between Fourier and STFT multipliers: The smoothing effect of the short-time Fourier transform

Journal of Mathematical Analysis and Applications
39 pages, 3 ...
Balazs P., Bastianoni F., Cordero E., Feichtinger H. G., Schweighofer N.   +4 more
openaire   +7 more sources

LIGO Core-Collapse Supernova Detection Using Convolutional Neural Networks [PDF]

Sensors
Core-collapse supernovae (CCSNe) remain a critical focus in the search for gravitational waves in modern astronomy. Their detection and subsequent analysis will enhance our understanding of the explosion mechanisms in massive stars.
Zhicheng Pan, El Mehdi Zahraoui, Patricio Maturana-Russel, Guillermo Cabrera-Guerrero   +3 more
doaj   +2 more sources

The Synchrosqueezed Method and Its Theory-Analysis-Based Novel Short-Time Fractional Fourier Transform for Chirp Signals

Remote Sensing
Time–frequency analysis is an important tool used for the processing and interpretation of non-stationary signals, such as seismic data and remote sensing data.
Zhen Li, Zhaoqi Gao, Liang Chen, Jinghuai Gao, Zongben Xu   +4 more
doaj   +3 more sources

Motor Current Based Misalignment Diagnosis on Linear Axes with Short- Time Fourier Transform (STFT)

Procedia CIRP, 2022
Mustafa, Demetgul, Yicheng, Zhao, Minjie, Gu, Jonas, Hillenbrand, Jürgen, Fleischer   +4 more
openaire   +5 more sources

A Study of Fatigue Data Editing using the Short-Time Fourier Transform (STFT) [PDF]

American Journal of Applied Sciences, 2009
Cette étude présente le développement de la technique d'édition de données de fatigue basée sur STFT qui sera utilisée comme outil pour accélérer les tests de fatigue. Cette technique a été réalisée en supprimant les cycles de faible amplitude contenus dans le signal d'origine afin de produire un signal raccourci à l'aide du paramètre de transformée de
S. Abdullah, C.K.E. Nizwan, M.Z. Nuawi
  +4 more sources