Fig. 13From: Data driven filtering of bowel sounds using multivariate empirical mode decompositionExample of a segment without bowel sounds but other non-stationary artifacts. Original and variously filtered signals. WTST-NST: wavelet transform-based stationary-nonstationary filter [15]. WT-FD: wavelet transform-based fractal dimension filter [18]. IMF-FD: intrinsic mode function-based fractal dimension filter; IMF-FD + AE: IMF-FD filter plus artifact eliminationBack to article page