EEG Signal Analysis by Continuous Wavelet Transform Techniques

1998 ◽  
pp. 213-219 ◽  
Author(s):  
Marco Ende ◽  
Alfred K. Louis ◽  
Peter Maass ◽  
Gottfried Mayer-Kress
Keyword(s):  
Wavelet Transform ◽  
Continuous Wavelet Transform ◽  
Signal Analysis ◽  
Continuous Wavelet ◽  
Eeg Signal ◽  
Eeg Signal Analysis

scholarly journals Tunable-Q Wavelet Transform Based Multivariate Sub-Band Fuzzy Entropy with Application to Focal EEG Signal Analysis

Entropy ◽  
2017 ◽  
Vol 19 (3) ◽  
pp. 99 ◽  
Author(s):  
Abhijit Bhattacharyya ◽  
Ram Pachori ◽  
U. Acharya
Keyword(s):  
Wavelet Transform ◽  
Signal Analysis ◽  
Fuzzy Entropy ◽  
Eeg Signal ◽  
Eeg Signal Analysis

IDENTIFICATION OF ROTATING PRESSURE WAVES IN A CENTRIFUGAL COMPRESSOR DIFFUSER BY MEANS OF THE WAVELET CROSS-CORRELATION

2006 ◽  
Vol 04 (02) ◽  
pp. 373-382 ◽  
Author(s):  
LONGIN HORODKO
Keyword(s):  
Correlation Function ◽  
Wavelet Transform ◽  
Centrifugal Compressor ◽  
Continuous Wavelet Transform ◽  
Signal Analysis ◽  
Cross Correlation ◽  
Rotating Stall ◽  
Pressure Waves ◽  
Continuous Wavelet ◽  
Compressor Impeller

Rotating stall is usually the first symptom of approaching compressor instability. It consists of zones of a turbulent flow, which rotate slower than the compressor impeller. The wavelet cross-correlation function was applied to detect rotating objects, whereas the continuous wavelet transform was used to identify different phases of the compressor operation. These methods of signal analysis enabled the identification of rotating pressure waves that appear during all phases of operation. Some of them have several times shorter wavelength than these manifested by the rotating stall. What is more, rotating pressure waves, though very weak, appear also during the stable compressor operation.

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