Table 6.
Analysis on the basis preprocessing for artefact removal and feature extraction transform
| Reference | Preprocessing approach | Feature extraction |
|---|---|---|
| [11] | Offline manual | FFT |
| [12] | Offline manual | Time domain |
| [13] | Offline manual | FFT |
| [14] | Filter of 0–100 Hz, notch filter of 60 Hz and offline manual | STFT |
| [15] | Filter of 0–100 Hz, notch filter of 60 Hz and offline manual | STFT |
| [16] | Filter of 0–100 Hz, notch filter of 60 Hz and offline manual | STFT |
| [17] | Filter of 0–100 Hz, notch filter of 60 Hz and offline manual | STFT |
| [35] | Offline manual | FFT |
| [18] | Offline manual | Time-frequency transform (Zhao-Atlas-Marks STFT, Hilbert Huang Spectrum) |
| [19] | Offline manual | STFT |
| [21] | Offline manual | Wavelet |
| [20] | Offline manual | TF |
| [36] | Filter, offline manual, PCA | FBCSP |
| [22] | Offline manual | DTF |
| [23] | Offline manual | hybrid domain |
| [24] | Offline manual | Wavelet |
| [25] | Offline manual | DFA |
| [26] | EEG Lab Tool, ICA | FFT |
| [27–29] | Instrumental Raag Bhairavi | FFT |
| [30] | Instrumental Raag Bhairavi | FFT |
FFT Fast Fourier transform, STFT short Fourier transform, TF time frequency, DFA dendred facture analysis, ICA independent component analysis, FBCSP filter-bank common spatial patterns