Title :

Acoustic distances, Pillai scores and LDA classification scores as metrics of L2 comprehensibility and nativelikeness

Author(s) :

Mairano, Paolo [Auteur]
Savoirs, Textes, Langage (STL) - UMR 8163 [STL]
Bouzon, Caroline [Auteur]
Savoirs, Textes, Langage (STL) - UMR 8163 [STL]
Capliez, Marc [Auteur]
Savoirs, Textes, Langage (STL) - UMR 8163 [STL]
de Iacovo, Valentina [Auteur]

Conference title :

ICPhS2019

City :

Melbourne

Country :

Australie

Start date of the conference :

2019-08

Book title :

Proceedings of the 19th International Congress of Phonetic Sciences, Melbourne, Australia 2019

English keyword(s) :

vowels
L2 pronunciation assessment
vowel distances
Pillai score
LDA classification

HAL domain(s) :

Sciences cognitives/Linguistique
Sciences de l'Homme et Société/Linguistique

English abstract : [en]

Evaluating L2 pronunciation via acoustic measures is problematic. In the literature, this is sometimes accomplished via fluency metrics (speech rate, average length of IPUs, etc), which however do not capture pronunciation ...
Show more >Evaluating L2 pronunciation via acoustic measures is problematic. In the literature, this is sometimes accomplished via fluency metrics (speech rate, average length of IPUs, etc), which however do not capture pronunciation accuracy. Other studies use VOT measurements (only possible if L1 and L2 differ in this respect) or comparison of vowel formants with native values. This contribution uses vowel distances in an F1-F2 space, Pillai scores and classification scores for vowel pairs as acoustic metrics of L2 vowel pronunciation. We compute these metrics on speech produced by 25 learners of L2 English and we compare them with (a) fluency metrics computed on the same productions, (b) VOT measurements, (c) impressionistic judgments provided by native speakers. The advantage of this approach is that L2 pronunciation accuracy is not judged in reference to comparable native productions, but intrinsically: it measures the extent to which phonological vowel contrasts are kept apart in L2 speakers' realisations.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Savoirs, Textes, Langage (STL) - UMR 8163

Source :

Harvested from HAL