Fourier and Wavelet time-frequency plane
Time-frequency analysis on gong timor music using short-time fourier transform and continuous wavelet transform
... notations; frequency analysis of Gong music frequency compared by the Short- time Fourier Transform (STFT), Overlap Short-time Fourier Transform (OSTFT), and Continuous ...
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Wavelet-Based Characterization and Stochastic Modelling of Pulse-like Ground Motions on the Time-frequency Plane
... of time-frequency representation methods An investigation on the performance of several such methods which have been previously used in seismic related applications, namely the HWT, MWPT, ST and EMD is ...
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Fourier Transforms. Figure 7-1:Fourier transform from time domain to frequency domain
... its Fourier transform? Modeling the signal is ...zero time and then the signal is just a cosine or sine function modulated (multiplied) by an exponential function such that the signal decays with ...
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Wavelet-Based Speech Enhancement Using Time-Frequency Adaptation
... lower frequency must be ...lower frequency if the frame is categorized as unvoiced ...the time domain and harmonically structured. In frequency domain, these sounds are generally localized in ...
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Sparse Reconstruction of Time-Frequency Representation using the Fractional Fourier Transform
... Abstract—This paper describes a novel method to approximate instantaneous frequency of non-stationary signals through an application of fractional Fourier transform (FRFT). FRFT enables us to build a ...
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Fourier and Wavelet Spectral Analysis of EMG Signals in 1 km Cycling Time Trial
... Abstract Frequency domain analyses in electromyographic (EMG) signals are frequently applied to assess muscle fatigue and similar ...Moreover, Fourier-based approaches are typically used for investigating ...
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Identification of Radar Signals Based on Time-Frequency Agility using Short-Time Fourier Transform
... real time-warning or in order to determine Electronic Order of Battle (EOB) of these ...joint Time-Frequency Distribution (TFD) in order to identify the time-frequency agility of radar ...
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A hybrid wavelet and time plane based method for QT interval measurement in ECG signals
... 6 wavelet and one time plane based with modifications in their algorithms and inclusion of two more wavelets (Daubechies 8 and Symlet ...of time plane feature extraction method it gives ...
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Speech steganography using wavelet and Fourier transforms
... discrete Fourier transform (DFT) is then applied on each segment leading to a phase matrix; (iii) Compute the differ- ences between the phase of each pair of the consecutive segments; (iv) Identify the phase ...
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Non Stationary Signal Segmentation and Separation from Joint Time Frequency Plane
... a time-frequency distribution plane that is positive and has no cross term as well ...STFT, time-localization is a achieved first by win- dowing the signal by cutting off a slice of it and ...
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Optimization of Fourier Plane Coverage of Antenna Arrays for SPORT
... Optimization Results In this paper, by using simulated annealing, solutions are obtained for N = 8, 10, 12, 14. The array elements are constrained to locate on a circle which radius is 0.5. An evenly distribution of the ...
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Optical Image Compression Using a Real Fourier Plane
... Hastening transmission by efficiently providing compression is our goal in this work. Image compression consists in reducing information size representing an image. Elimination of redundancies and non-pertinent ...
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Time-Frequency Signal Processing Based on Fractional Fourier Transform in Passive Sonar Classification
... the frequency domain using the fast Fourier transform of power spectrum[1], ...using time-frequency signal analysis and processing has been considered as an effective way to remove the noises ...
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Estimation of Interchannel Time Difference in Frequency Subbands Based on Nonuniform Discrete Fourier Transform
... interchannel time difference (ICTD), and interchannel correlation ...discrete Fourier transform (NDFT) and integrate it with the BCC approach to improve the decoded auditory ...discrete Fourier ...
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Isogeometric analysis: vibration analysis, Fourier and wavelet spectra
... This study is focused on the characteristics of IGA method in vibration problems. Since dynamic response aspects of structures are interest target in mechanical and structural engineering, it is noteworthy to process the ...
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Image volume denoising using a Fourier wavelet basis
... However, SNR gains for knee image volume are not so high, which can be explained by the fact that most structures preva- lent in this volume are mainly solid rather than planar. Two types of artifacts can be observed ...
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Spectrally Efficient OFDMA Lattice Structure via Toroidal Waveforms on the Time-Frequency Plane
... 4. Simulation Results In this study, the aim is to increase the system throughput by constructing a toroidal waveform in a rectangular lattice structure. For this purpose, di ff erent orders of Hermite- Gaussian pulses ...
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A sparse reconstruction framework for Fourier-based plane wave imaging
... of wavelet bases, its size is several times the size of the image, depending on the number of wavelet bases ...the wavelet decomposition with O(N ) ...
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Acoustic Seabed and Target Classification using Fractional Fourier Transform and Time-Frequency Transform Techniques
... the Wavelet packet coef cients and from fractal ...using wavelet packets in conjunction with linear predictive coding, a feature selection scheme and a backpropagation neural network classi ...the ...
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Ground-penetrating radar time-frequency analysis method based on synchrosqueezing wavelet transformation
... because Fourier transform is impeded by time-frequency ...short-time Fourier transform, Hilbert-Huang transform, and wavelet transform, have been proposed to overcome the ...
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