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FRAMES IN ROTATED TIME-FREQUENCY PLANES
"... Weyl-Heisenberg frames are complete signal representations corresponding to rectangular tiling of the time-frequency plane. Extensions of these frames are obtained in the ro-tated time-frequency planes by using the fractional Fourier transformation. It is shown that rotation does not affect the fram ..."
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Weyl-Heisenberg frames are complete signal representations corresponding to rectangular tiling of the time-frequency plane. Extensions of these frames are obtained in the ro-tated time-frequency planes by using the fractional Fourier transformation. It is shown that rotation does not affect
BLOCK-RECURSIVE, MULTIRATE FILTERBANKS WITH ARBITRARY TIME-FREQUENCY PLANE TILING
"... A new method to realize arbitrary time-frequency plane tilings together with critical sampling in block-recursive filterbanks is presented. The method leads to pole-zero approximation of the target channel transfer functions. Perfect reconstruction within the limits of the approximation error can be ..."
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A new method to realize arbitrary time-frequency plane tilings together with critical sampling in block-recursive filterbanks is presented. The method leads to pole-zero approximation of the target channel transfer functions. Perfect reconstruction within the limits of the approximation error can
The reduction of interference terms in the time-frequency plane
- in Proc. of the International Symposium SCS’2003
, 2003
"... There are few techniques for the reduction of interference terms. The most important between them is the reallocation technique. Other methods are based on the decomposition in frames of the signals to be processed. These frames represent discrete variants of some corresponding linear time-frequency ..."
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Cited by 1 (1 self)
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There are few techniques for the reduction of interference terms. The most important between them is the reallocation technique. Other methods are based on the decomposition in frames of the signals to be processed. These frames represent discrete variants of some corresponding linear time-frequency
ANALYSIS OF CHAOTIC SIGNALS IN THE TIME-FREQUENCY PLANE
"... In this paper we study chaotic signals generated from Chua’s circuit: in particular we concentrate on the well known spiral attractor. Chaotic signals have a nonstationary nature, and hence the classical Fourier spectrum turns out to be inadequate for the analysis. Instead of it we use Time-Frequenc ..."
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In this paper we study chaotic signals generated from Chua’s circuit: in particular we concentrate on the well known spiral attractor. Chaotic signals have a nonstationary nature, and hence the classical Fourier spectrum turns out to be inadequate for the analysis. Instead of it we use Time-Frequency
PAPER Analysis of Chaotic Signals in the Time-Frequency Plane
"... Abstract In this work we study chaotic signals generated from Chua's circuit. In particular, we concentrate on the well known spiral and hetero attractors. Chaotic signals have a nonstationary nature, and hence the classical Fourier spectrum is inadequate for the analysis. We instead use time-f ..."
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Abstract In this work we study chaotic signals generated from Chua's circuit. In particular, we concentrate on the well known spiral and hetero attractors. Chaotic signals have a nonstationary nature, and hence the classical Fourier spectrum is inadequate for the analysis. We instead use time-frequency
INFORMATION-THEORETIC SIGNAL PROCESSING ON THE TIME-FREQUENCY PLANE AND APPLICATIONS
"... Time-frequency analysis is a major tool in representing the energy distribution of time-varying signals. There has been a lot of research on various properties of these representations. However, there is a general lack of quantitative measures in describing the amount of information encoded into a t ..."
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Cited by 4 (0 self)
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time-frequency distribution. Recently, information-theoretic measures such as entropy and divergence have been adapted to the time-frequency plane to quantify the complexity of individual signals as well as the difference between signals. In this paper, we present a variety of information
Identification of motor unit discharge patterns in time-frequency plane
"... Abstract:- This paper presents a novel approach to decomposition of multichannel surface electromyograms recorded during low-level isometric muscle contractions. The approach is based on special time-frequency matrices of measured signals, enables separation of contributions of different motor units ..."
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Cited by 3 (3 self)
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units in time-frequency plane and is not sensitive to the superimpositions of motor unit action potentials. The results on both synthetic and real surface electromyograms prove the proposed approach is robust to noise and has potential clinical applications for the non-invasive analysis of single motor
Orthonormal bases and tilings of the time-frequency plane for music processing
- WAVELETS: APPLICATIONS IN SIGNAL AND IMAGE PROCESSING X
, 2003
"... Conventional techniques for signal analysis and processing in the time-frequency domain are not well adapted to digital processing of music signals. This restricts the features and quality of applications. We present the current status of a research initiative on this problem. A novel family of wave ..."
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Cited by 1 (0 self)
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of wavelet-like bases allows a tiling of the time-frequency plane that is better adapted to digital music signals. This will allow performance enhancements in all kinds of digital audio applications.
Arbitrary tilings of the time-frequency plane using local bases
- IEEE Transactions on Signal Processing
, 1999
"... Abstract—We show how to design filters given a prescribed tiling of the time–frequency plane. Moreover, we impose on these filters the structure of local orthogonal bases. These bases were recently constructed as a generalization of the cosine-modulated filter banks in discrete time and local trigon ..."
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Cited by 3 (0 self)
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Abstract—We show how to design filters given a prescribed tiling of the time–frequency plane. Moreover, we impose on these filters the structure of local orthogonal bases. These bases were recently constructed as a generalization of the cosine-modulated filter banks in discrete time and local
Results 1 - 10
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