Multimedia Archives: New Digital Filters to Correct Equalization Errors on Digitized Audio Tapes

Table 5

Results of paired sample t-tests between the Hidden reference and the remaining filters. Tests have been collapsed across the 3 NAB stimuli or the 3 CCIR stimuli. Bonferroni correction has been applied to values. Effect size refers to Cohen’s d.

Filter comparison	Filter type	Significance (p)	Effect size (d)
MATLAB	NAB	0.199	1.04
NC foil	NAB	0.006	2.24
Anchor	NAB	<0.001	1.81
MATLAB	CCIR	0.141	0.79
CN foil	CCIR	0.019	1.04
Anchor	CCIR	<0.001	1.19