Time-frequency analysis
Review on Analysis of EEG Signals with the Effect of Meditation
... In the past, many people doing research on meditation found out the effect of meditation on stress relief and disease improvement. This project is mainly designed to trace the varying spectral characteristics of EEG ...
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Wigner Ville Distribution in Signal Processing, using Scilab Environment
... of time frequency analysis is to develope a two dimensional of one dimensional data that can be computed efficiently and that is readily interpreted ...Fourier analysis, combines the ...
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Timefrequency analysis : The bilinear Hilbert transform and the Carleson theorem
... Our three main references are LACEY and THIELE (1997), LACEY and THIELE (1999) and LACEY and THIELE (2000). What connects them is the technique used: time- frequency analysis. A common feature of the ...
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Comparative analysis of time-frequency methods estimating the time-varying microstructure of sleep EEG spindles
... Abstract— Parameter estimation for an assumed sleep EEG spindle model (AM-FM signal) is performed by using four time-frequency analysis methods. Results from simulated as well as from real data are ...
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Analysis and Pattern Recognition of Woodwind Musical Tones Applied to Query-by-Playing Melody Retrieval
... The segment length is initially set to 50 ms which was found optimal for a pure time-frequency analysis. It should be noted here that careful selection of the segment length is an essential ...
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Time-frequency Extraction Algorithm of Harmonic Signal from Lorenz Mixed Signal
... the time-frequency analysis method is more and more ...of time-frequency ...performance analysis of harmonic signal extraction in chaos ...
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An application of wavelet analysis to meat consumption cycles
... only time-domain, giving quite mixed results and complicating any defini- tive conclusion about the existence or nonexistence of changes in the meat consumption ...the frequency domain which cannot be ...
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(São Paulo, online) vol.3 número5
... The RR intervals were recorded with a mobile HR monitor at a sampling rate of 1 kHz. RR intervals were downloaded through the Polar Precision Performance program (v.3.0, Polar Electro, Finland): this software enabled the ...
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Frequency and time domain dynamic structural analysis: convergence and causality
... dynamic analysis SDOF structural systems were ...of analysis was discussed. The convergence analysis of the response obtained by the FD method indicated that, when N is even, there is a complex term ...
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Comparison of High, Intermediate, and Low Frequency Shock Wave Lithotripsy for Urinary Tract Stone Disease: Systematic Review and Network Meta-Analysis.
... Though the mechanism underlying the relative benefit of low-frequency SWL remains uncertain, several hypotheses have been generated regarding cavitation bubble generation. The first possible mechanism involves ...
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Enhancing Text Clustering Using Concept-based Mining Model
... statistical analysis of a word or phrase. The statistical analysis of a term frequency captures the importance of the term without a document ...same frequency in the same ...concept ...
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Quasi-Orthogonal Space-Time-Frequency Trellis Codes for Mimo-OFDM Systems
... In this paper, we have carried out a design of rate-one, high-coding gain QOSTFTCs for MIMO- OFDM systems for four transmit and two receive antennas under a frequency selective fading channel. The proposed ...
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High Frequency Trading using Fuzzy Momentum Analysis
... Momentum Analysis System (FULMAS) implemented in this paper is to outperform the industry’s standard volume system that has been used by brokerage firms to execute large orders of buying or selling a certain ...
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Measures of dispersion as constraints for length-frequency analysis
... Our objective was to develop simple models, relating variability in length at age to life history and environmental parameters that could be used to select appropriate starting values an[r] ...
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Human Activity Recognition with Accelerometry: Novel Time and Frequency Features
... statistical, time and frequency domains, as well as on data representations that can be used to discriminate between user activities such as Horizon Plot were ...
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A time frequency approach to blind deconvolution in multipath underwater channels
... 5.14 Chirp-adapted distribution of the received signal, CA r (t, f ). For illustration pur- poses, the emitted LFM signal true frequency modulation rate α has been used in the calculation of the distribution. The ...
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On the use of pseudo-forces to consider initial conditions in 3D time- and frequency-domain acoustic analysis
... the time- domain or in transformed domains. Although time-domain formulations can be efficiently adopted for solving a great range of problems, in some cases the analysis via transformed domains ...
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Braz. j. . vol.82 número1
... initial frequency, first peak frequency, second peak frequency; initial intensity, final intensity; and time for the swallowing of saliva, liquid, nectar, honey, and pudding, with 5- and 10-mL ...
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Braz. j. . vol.75 número5
... The mean value variance within the same consis- tency, for the three age ranges, among males (Table 8) was seen for liquid and paste, only among frequency and peak intensity variables. Contrary to that, among ...
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WAVELET TRANSFORMS IN TIME SERIES ANALYSIS
... When observations are taken on two or more variables, it may be possible to use the variation in one time series to explain the variation in another series. This may lead to a deeper understanding of the mechanism ...
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