This study examines the phonetic properties of lexical stress in English produced by Persian speakers learning English as a foreign language. The four most reliable phonetic correlates of English lexical stress, namely fundamental frequency, duration, intensity, and vowel quality were measured across Persian speakers’ production of the stressed and unstressed syllables of five English disyllabi...

Native Spanish speakers and Canadian English learners of Spanish produced the five Spanish vowels in utterance final /sV/ syllables. The syllables were presented in random order to Spanish and English listeners for identification of vowels in terms of Spanish vowel categories. The English listeners also identified the vowels in terms of English vowel categories. Initial analysis of perceptual r...

This paper gives an overview and an analysis of representative vowel space depictions found in the phonetic literature of the past four centuries. A visual representation of 24 selected structural proposals with time is given in poster form, after translation to a common notation. A first-order approach is developed by which the distance between any pair of vowel schemes may be measured. Using ...

This study examines phonetic variation in the acoustic properties of the French /i,e,a,o,u/ sub-system as a function of vowel duration and speech style in order to better understand the interplay between these two well-known factors of vowel reduction. Over 1000k vowels extracted from three large corpora of continuous French including read speech (BREF), partly scripted journalistic speech (EST...

This study aims to characterize the nature of the dynamic spectral change in vowels in three distinct regional varieties of American English spoken in the Western North Carolina, in Central Ohio, and in Southern Wisconsin. The vowels /I, epsilon, e, ae, aI/ were produced by 48 women for a total of 1920 utterances and were contained in words of the structure /bVts/ and /bVdz/ in sentences which ...

In " Approaches to Phonological Complexity ". 1. Abstract Vowels can be produced with static articulatory configurations represented by dots in acoustic space (generally by formant frequencies in the F1-F2 plane). But because vowel characteristics vary with speaker, consonantal environment (co-articulation) and production rate (reduction phenomenon), vowel formant frequencies can also be repres...

It is well known that vowels can be produced in isolation, acoustically stable in such a way that they are represented as points in the F1-F2 plane. But, in a preceding study [1], following the predictions of the DRM model of speech production, the area function space and the corresponding acoustic space were already shown to be dynamically structured. Privileged formant trajectories were as fo...

Eight languages (Arabic, English, French, German, Italian, Mandarin Chinese, Portuguese, Spanish) with 6 differently sized vowel inventories were analysed in terms of vowel formants. A tendency to phonetic reduction for vowels of short acoustic durations clearly emerges for all languages. The data did not provide evidence for an effect of inventory size on the global acoustic space and only the...

The present study examined the acoustic features of vowel production in Mandarin-speaking children with cochlear implants (CIs). The subjects included 14 native Mandarin-speaking, prelingually deafened children with CIs (2.9-8.3 yr old) and 60 age-matched, normal-hearing (NH) children (3.1-9.0 years old). Each subject produced a list of monosyllables containing seven Mandarin vowels: [i, a, u, ...