Results 271 to 280 of about 2,865,323 (310)

Wavelets and time-frequency analysis

Proceedings of the IEEE, 1996
We present a selective overview of time-frequency analysis and some of its key problems. In particular we motivate the introduction of wavelet and wavelet packet analysis. Different types of decompositions of an idealized time-frequency plane provide the basis for understanding the performance of the numerical algorithms and their corresponding ...
Nikolaj Hess-Nielsen, Mladen Victor Wickerhauser   +1 more
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THE LINEAR TIME FREQUENCY ANALYSIS TOOLBOX

International Journal of Wavelets, Multiresolution and Information Processing, 2012
The Linear Time Frequency Analysis Toolbox is a MATLAB/Octave toolbox for computational time-frequency analysis. It is intended both as an educational and computational tool. The toolbox provides the basic Gabor, Wilson and MDCT transform along with routines for constructing windows (filter prototypes) and routines for manipulating coefficients.
Peter L. Søndergaard, Bruno Torrésani, Péter Balázs   +2 more
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The statistics of time–frequency analysis

Journal of the Franklin Institute, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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ECG analysis in the Time-Frequency domain

2012 IEEE 12th International Conference on Bioinformatics & Bioengineering (BIBE), 2012
The Electrocardiogram (ECG) has been established as a powerful diagnostic tool in medicine which provides important information about the patient's heart condition. The correct identification of the QRS complexes is a fundamental step in every automated or semi-automated ECG analysis method.
Neophytou, N., Kyriakides, A., Pitris, Costas, Neophytou, N., Kyriakides, A., Pitris, Costas   +5 more
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Time-Frequency Analysis of Musical Instruments

SIAM Review, 2002
Summary: This paper describes several approaches to analyzing the frequency, or pitch, content of the sounds produced by musical instruments. The classic method, using Fourier analysis, identifies fundamentals and overtones of individual notes. A second method, using spectrograms, analyzes the changes in fundamentals and overtones over time as several ...
Jeremy F. Alm, James S. Walker
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Evolutionary time-frequency analysis

Proceedings of the 2000 Congress on Evolutionary Computation. CEC00 (Cat. No.00TH8512), 2002
Adapted waveform analysis uses libraries of bases and an efficient functional to match a basis to a given signal or family of signals. In particular, wavelet packets and localized trigonometric functions support the expansion of waveforms in bases whose elements have good time-frequency localization properties.
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Parallel time-frequency analysis

International Conference on Acoustics, Speech, and Signal Processing, 2003
Conventional time-frequency analysis methods are generally too computationally intensive for real-time implementation. A relatively new method based on a dynamic state-space model is inherently a real-time method and can be implemented in parallel processing.
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Time-Frequency Analysis

2003
Conventionally, time series have been studied either in the time domain or the frequency domain. The representation of a signal in the time domain is localized in time, i.e. the value of the signal at each instant in time is well defined. However, the time representation of a signal is poorly localized in frequency, i.e.
A. Ramachandra Rao, Khaled H. Hamed, Huey-Long Chen   +2 more
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Enhancement of time-frequency post-processing readability for nonstationary signal analysis of rotating machinery: Principle and validation

Mechanical Systems and Signal Processing, 2022
Dong Zhang, Zhipeng Feng
exaly  

Time–Frequency Analysis

2021
John L. Semmlow, Benjamin Griffel
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