time-frequency spectrum analysis
A review of developments of EEG based automatic medical support systems for epilepsy diagnosis and seizure detection
... domain analysis is based on Fourier trans- form which decomposes EEG signals into different fre- quency ...in frequency domain ...in time domain is revealed by means of fre- quency ...of ...
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A Novel Range-Instantaneous-Doppler ISAR Imaging Algorithm for Maneuvering Targets via Adaptive Doppler Spectrum Extraction
... Doppler spectrum extraction is proposed in this ...sliced time is fixed in traditional RID ...Doppler spectrum of each range bin is extracted by gradient energy function (GEF) after ...
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Multivariate statistical analysis for damage and delamination in composite structures
... Singular Spectrum Analysis ...Component Analysis with the variables analysed being lagged versions of a single time series variable ...of time series in order to obtain smoother ...
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A Framework for Radio Frequency Spectrum Measurement and Analysis
... Radio receivers are tasked with the challenge of extracting desired signals from noise, sometimes in the case where the desired signal power is even beneath the measured noise floor. An optimal way of detecting and ...
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Selection of Effective EEG Band for Estimation of Cognitive State while Listening Music
... The frequency spectrum of a signal is basically the frequency components (spectral components) of that ...Among frequency analysis techniques, Fourier transform is considered to be the ...
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Analysis of the CNV waveform in the time and frequency domains
... Section 3.2 is a brief introduction to the Discrete, Fast and Continuous Fourier Transforms along with power and energy spectra. The use of the FFT to obtain amplitude and phase spectra and the energy spectrum ...
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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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Improving time–frequency domain sleep EEG classification via singular spectrum analysis
... explained, all the brain waves and also spindles and k- complexes are well separated. Sleep spindles are oscilla- tory components within the frequency range of (12-14 Hz) which last for 0.5-1 second are visible as ...
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Joint time-frequency representation of simulated earthquake accelerograms via the adaptive chirplet transform
... joint time-frequency representation of nonstationary data. Analysis of a signal via the adaptive chir- plet decomposition in conjunction with the Wigner-Ville distribution yields the so-called ...
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Discrete Time Frequency Signal Analysis and Processing Techniques for Non Stationary Signals
... linear time-frequency representations based on the straightforward approach of slicing the waveform of interest into a number of short segments and performing the analysis on each of these segments, ...
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Seismic Analysis of Vertical Irregular Buildings Using Response Spectrum Method
... response spectrum method and time history ...from Time history analysis is higher than Response Spectrum ...and frequency content of the ground ...
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Study of Singular Spectrum Analysis as a data-driven technique for damage diagnosis. Comparison between the time or frequency domain
... Singular Spectrum Analysis (SSA) technique is presented which decomposes the measured vibration responses in a certain number of principal components which reveal the rotational patterns at any ...
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International Journal of Basic & Applied Sciences IJBAS-IJENS Vol: 11 No: 02 96
... been analysis regarding time series, spectrum frequency, and phase based on time of measures (morning, noon, evening), cages (edge, center), and points of measurement in the cages (four ...
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Multivariate time-frequency analysis
... unique time-frequency representation for the signal x(t), based on the deriva- tive of the instantaneous phase, ...and frequency, the physical interpre- tation of such quantities is not always ...
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Interference Excision in Spread Spectrum Communications Using Adaptive Positive Time Frequency Analysis
... spread spectrum (DSSS) ...spread spectrum signal is decomposed into its time-frequency (TF) functions using an adaptive signal decomposition algorithm, and the resulting TF func- tions are ...
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Fine-Grained Analysis of Spontaneous Mutation Spectrum and Frequency in Arabidopsis thaliana
... the analysis of pedigrees over very short evolutionary time frames, by comparing par- ents and their direct offspring, or by experimentally studying the accumulation of mutations in inbred lineages over a ...
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Extraction and Analysis of Steady State Somatosensory Evoked Potentials in Lower Limbs
... stimulation frequency of the subject, the spectrum is analyzed by Fast Fourier Transform (FFT), which is a fast algorithm of Discrete Fourier ...frequencies. Time-frequency spectrum is ...
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Channel Capacity Analysis of Spread Spectrum Watermarking in Radio Frequency Signals
... spread spectrum watermarking scheme [23], ...spread spectrum watermarking in RF signals is investigated in [25], and the authors show that the average performance loss of the conventional receiver because ...
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Performance Improvement of Wireless Communications Using Frequency Hopping Spread Spectrum
... spread spectrum is a transmission technology used in wireless networks and a technique to generate spread spectrum by hopping the carrier fre- quency FHSS uses narrow band signal which is less than 1 MHz, ...
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NEW METHOD FOR FAST IMAGE EDGE DETECTION BASED ON SUBBAND DECOMPOSITION
... into frequency domain ...of frequency movement and arithmetic mean, and then the amount of pixels that are used in DFT and edge detection are reduced ...
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