Phoneme Classification in High-Dimensional Linear Feature Domains
TABLE II: Absolute reduction in percentage error for each of the classifiers (15)–(18) in quiet conditions.
['[BOLD] Model', 'Waveform', 'PLP', 'PLP+Δ+ΔΔ']
f. The relative benefits of the f-average and the sector sum are clear. The sector sum gives the bigger improvements on its own in all cases compared to only the f-average, but the combination of the two methods is better still throughout. The same qualitative trend holds true in noise.