Table 1.

Abbreviations of the proposed method and those of four comparison methods.

Abbreviations	Contents
HanRB	Ratio-based spectral correction technique using Hanning window.
HanAFSSC	HanRB using active frequency shifting operations as a preprocessing step.
RecRB	Ratio-based spectral correction technique using rectangular window.
RecAFSSC	RecRB using active frequency shifting operations as a pre-processing step.
AFSSC	The proposed method.