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. Author manuscript; available in PMC: 2016 Sep 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2015 Apr 13;62(9):2279–2288. doi: 10.1109/TBME.2015.2422698

Fig. 3.

Fig. 3

Spectrogram illustrations comparing the proposed method with (a) speechSP and (b) FX-LMS applied on the same sound excerpt. SpeechSP suppresses important lung sounds like crackle patterns (black circles) and wheeze pattern (blue circle). FX-LMS convergence is challenged by both the parametric setup and the complex, abrupt noise environment resulting in non-optimal lung sound recovery. Colormap is the same as Fig. 1.