Table 11 Fisher scores for vowel discrimination using FrFT-MFCC. Orders are set according to pitch and "formants." MP denotes the main peaks of the LPC spectrum, and Pitch + MP refers to the technique presented in Section 4.2. when , the transforms are multiplied as explained in Section 4.3 (right panel in Figure 5(b)).

From: Pitch- and Formant-Based Order Adaptation of the Fractional Fourier Transform and Its Application to Speech Recognition