Table 2: Mean CPU time ratio .

(dB)
(dB-Hz) 0 −4 −8

44 0.8789 0.8241 0.8238
40 0.7757 0.7706 0.7636
36 0.8588 0.8611 0.8856
32 0.8447 0.8605 0.8562
28 0.9630 1.0568 1.0304