Table 2 Results for a experimental STNO neural network with N = 400 nodes.

FilterTrainingTestingOverfitting
WSR (std)MSE (std)WSR (std)MSE (std)MSEtest/MSEtrain
Cochleagram100.0% (0.0%)0.0192 (1.1 · 10−4)99.6% (0.8%)0.0222 (1.3 · 10−3)1.156
MFCC99.8% (0.1%)0.0262 (1.4 · 10−4)99.8% (0.6%)0.0274 (1.0 · 10−3)1.046
$$\Re$$(Spectro)90.2% (0.4%)0.0699 (1.5 · 10−4)80.0% (4.1%)0.0726 (1.5 · 10−3)1.039
Spectro HP100.0% (0.0%)0.0327 (7.1 · 10−5)99.8% (0.6%)0.0344 (7.7 · 10−4)1.052