Results 241 to 250 of about 3,006,903 (268)

Time--frequency analysis of biosignals

IEEE Engineering in Medicine and Biology Magazine, 2009
The wavelet transform has a powerful time-frequency analysis and signal-coding tool suitable for use in the manipulation of complex nonstationary signals. This article provides an overview of the emerging role of wavelet-transform analysis in biomedical signal processing and analysis.
Addison, Paul, Walker, James, Guido, Rodrigo   +2 more
openaire   +3 more sources

Recursive Time-Frequency Reassignment

IEEE Transactions on Signal Processing, 2009
A fast algorithm for creating time-frequency representations based on a special case of the short-time Fourier transform (STFT) is presented. The algorithm is extended with the method known as time-frequency reassignment. This approach makes time-frequency reassignment well suited for real-time implementations.
openaire   +1 more source

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.
openaire   +1 more source

Comments on "Resolution in time-frequency"

IEEE Transactions on Signal Processing, 2000
The author comments that the first line of conjecture 5 in the paper of DeBrunner, Ozaydin and Przebinda (see ibid., vol.47, p.783-88, 1999) was proven by Dembo et al. (1991). The proof is a consequence of the properties of the discrete Renyi entropies. Conjecture 5 is a special case of the Renyi-Hirschman inequality.
openaire   +1 more source

Time-frequency Processing

2003
Arfib, Daniel, Keiler, F., Zoelzer, U.
openaire   +2 more sources

Enhancement of time-frequency post-processing readability for nonstationary signal analysis of rotating machinery: Principle and validation

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

Synchrosqueezing Matching Pursuit Time–Frequency Analysis

IEEE Geoscience and Remote Sensing Letters, 2021
Kun Li, Zhaoyun Zong, Lu Xu
exaly  

Chapter 1 Time, frequency, and time-frequency

1998
openaire   +1 more source

Time-frequency signal representations

1998
This invited paper - of a tutorial and review character - presents an overview of two classes of time-frequency signal representations. The first class, in which the signal arises linearly, deals with the windowed Fourier transform and its sampled version (also known as the Gabor transform) and the inverse of the latter: Gabor's signal expansion.
openaire   +6 more sources

Nonstationary local time-frequency transform

Geophysics, 2021
Yangkang Chen
exaly