Table 4 Influence of the number of differential coefficients with the HLDA transformation on phone recognition rates on the core test of the TIMIT database
39 monophone HMMs with 16 Gaussians per state \(+\) Bigram | Accuracy (%) | Correct (%) |
|---|---|---|
Exp 1 : \(39 \ MFCC\) coefficients | 69.19 | 71.78 |
Exp 2 : \(52 \ MFCC\) coefficients | 67.96 | 71.38 |
Exp 3 : \(HLDA \ (52\rightarrow 39)\) | 71.32 | 74.07 |