Table 2.

Results of regression analysis of the noise metrics as functions of PTS₅₁₂₄. λ is the coefficient of the kurtosis correction term and r² is the r-square value (square of the correlation coefficient) between the metric and NIHL defined as PTS₅₁₂₄.

Metric number	Metric	λ	r2 value
1	Leq	N∕A	0.41
2	LAeq	N∕A	0.46
3	Leq,5124	N∕A	0.61
4	${L^{\prime }}_{eq}=L_{eq}+\lambda {\log \hspace{0.17em}}_{10}\frac{\beta }{{\beta }_G}$	4.80	0.54
5	${L^{\prime }}_{Aeq}=L_{Aeq}+\lambda {\log \hspace{0.17em}}_{10}\frac{\beta }{{\beta }_G}$	4.04	0.54
6	${L^{\prime }}_{eq,5124}=L_{eq,5124}+\lambda {\log \hspace{0.17em}}_{10}\frac{\beta }{{\beta }_G}$	3.07	0.67