short-time Fourier transform analysis
Diagnostics of Transient States in Hydraulic Pump System with Short Time Fourier Transform
... Our comparative studies using FFT and STFT approaches show that the use of the second meth- od has a practical application in the detection and identification of rapid pressure and flow changes in hydraulic pump systems. ...
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The Acquisition and Short Time Fourier Transform of Lung Sounds
... Simple time-domain analysis cannot fully reflect the characteristics of lung sound signals, so the need for lung sound signals spectral analysis, the Fourier transform is a kind of ...
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Directional short time Fourier transform of distributions
... ridgelet transform. He introduced and analyzed the continuous ridgelet transform which is a combination of continuous wavelet transform and the Radon trans- form ...Radon transform and ...
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Short time spectrum analysis-synthesis of speech
... of whose fidelity time Fourier transform This a enough component synthesized next speech elimination analysis was frequency version negative from the medium spectrum, short a high judged[r] ...
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Multi-Band Frequency Window for Time-Frequency Fault Diagnosis of Induction Machines
... The analysis of the current spectrum can identify online the characteristic fault signatures at an early stage, avoiding unexpected ...domain analysis requires stable working conditions, which is not the ...
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Quantitative uncertainty principles for the short time Fourier transform and the Radar ambiguity fn
... in time-frequency analysis namely by providing an interesting way to study the local frequency spectrum of ...classical Fourier transform, the STFT gives a simultaneous representation of the ...
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Intra pulse modulation recognition using short time ramanujan Fourier transform spectrogram
... Ramanujan Fourier Trans- form(RFT) based time-frequency transform, namely Short-time Ramanujan Fourier transform(ST-RFT) has been investigated owing to the good immunity ...
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Radar Signal Intra Pulse Feature Extraction Based on Improved Wavelet Transform Algorithm
... adaptive short-time Fourier analysis method, however it didn’t study the problem that the time resolution and the frequency resolution cannot be taken into account ...signal ...
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Comparison of STFT and CWT for Normal subjects and OSA patient
... invasive, time consuming, costly and causing immense discomfort for the ...Wavelet Transform (CWT) Analysis and Short Time Fourier Transform (STFT) ...
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Recent advances of the signal processing techniques in future smart grids
... fast Fourier transform; EMD: empirical mode decomposition; SNR: signal-to-noise ratios; FT: Fourier transform; STFT: short-time Fourier transform; CRN: cognitive ...
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A simple Spectral Observer
... of time via state estimation and the decomposition of such a signal into the frequencies that make it ...for time-frequency analysis because is a method that can compute on the fly the Fourier ...
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An Improved Chirplet Transform and Its Application for Harmonics Detection
... quality analysis and disciplines, the con- cept of a stationary time series is a mathematical ideali- zation that is never realized and is not particularly useful in the detection of power quality ...
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Power Quality Analysis Using Wavelet Transform: A Review
... and time-varying ...both time and frequency analysis methods. Short-time Fourier transform (STFT) is a signal processing tool used for analysis, in frequency ...
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Reduction in PAPR in OFDM System using Short Time Fourier Transform with variable window size
... the time slice of the input signal, interpreting as a function of the frequency for each value of the time index , The STFT represents a series of time localized ...of analysis where firstly ...
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Time-Frequency Domain Characterization of Stationary and Non stationary Signals
... spectral analysis of signals for the stationary as well as non-stationary ...achieve time frequency distribution of such ...signal analysis, this paper uses Fourier transform, ...
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Fourier and Wavelet Spectral Analysis of EMG Signals in 1 km Cycling Time Trial
... of short-time Fourier Transform is much less restrictive than Fourier transform since the former only needs local stationarity, ...spectral analysis over dynamic exercises ...
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Short Term Sinusoidal Modeling of an Oriental Music Signal by Using CQT Transform
... In this paper, we propose a method for characterizing a musical signal by extracting a set of harmonic descriptors re- flecting the maximum information contained in this signal. We focus our study on a signal of oriental ...
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Operational Calculus on Generalized Two-Dimensional Offset Fractional Fourier Transform
... This paper organized as follows. In section 2 Two Dimensional Offset Fractional Fourier Transform and Testing Function space are defined. In section 3 Generalized 2D Offset FRFT is defined. In section 4 ...
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Minimal Generalized Time Bandwidth Product Method for Estimating the Optimum Fractional Fourier Order
... Gabor transform was proposed which has clean physics meaning, to save compu- tational cost, the maximal amplitude in fractional domain was used for optimum fractional Fourier order in the ...signal ...
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The Method to Obtain the Rise and Fall of Anxiety, Estrogen, Progesterone and EEG Signals and Their Coincident Frequencies
... DOI: 10.4236/psych.2019.107068 1047 Psychology ferent females were randomly distributed over the sessions. The electrodes were placed according to the International 10 - 20 system at F3, F4, C3, C4, P3, P4, O1 and O2, ...
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