Phonetic variation in Italian L2: An acoustic analysis of sibilant fricatives in the speech of L1 Spanish learners

The present study investigates the acoustic features of Italian sibilant fricatives (/s/, /z/ and /ʃ/) in the speech of L1 Spanish learners. Segmental duration, degree of voicing and place of articulation of learners’ productions are analysed alongside those of a control group of L1 Italian speakers to investigate the fine-grained phonetic differences between native and non-native pronunciation. Results from a quantitative analysis suggest that factors such as the degree of typological markedness of the phoneme and the influence of the L1 in perception and production affect L2 pronunciation to a different extent for each of the target sounds.