Classification method of electroencephalogram signal
A signal classification and EEG technology, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problems of increased number of riding waves, distortion, lack of local characteristics, etc., saving time and space, reducing Distortion effect
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[0063] The preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings.
[0064] In this embodiment, firstly, the input EEG signal is subjected to empirical mode decomposition, and the EEG signal is decomposed into a sum of some eigenmode functions, and then each eigenmode function is extracted by an empirical AM-FM decomposition method. Bandwidth and FM bandwidth, and used as the input of the support vector machine to classify the EEG signal.
[0065] ideally attenuates chirp signals (Such as Figure 4 As shown, take α and β as 0.005 and 0.4) as an example. Its instantaneous amplitude and instantaneous frequency are respectively
[0066] a ( t ) = 2 ( α / π ) 1 / 4 ...
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