Bridging phonological system and lexicon: Insights from a corpus study of functional load

Oh, Yoon Mi; Coupé, Christophe; Marsico, Egidio; Pellegrino, François

doi:10.1016/j.wocn.2015.08.003

Cited by 27 publications

(27 citation statements)

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“…We also believe that smaller contexts facilitate the comparison across languages that have quite diverse syllable structures. In addition, the relationship between information density and phonetic structures is assumed to be better reflected by phoneme language models (Oh et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Dimensions of Segmental Variability: Interaction of Prosody and Surprisal in Six Languages

et al. 2018

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Contextual predictability variation affects phonological and phonetic structure. Reduction and expansion of acoustic-phonetic features is also characteristic of prosodic variability. In this study, we assess the impact of surprisal and prosodic structure on phonetic encoding, both independently of each other and in interaction. We model segmental duration, vowel space size and spectral characteristics of vowels and consonants as a function of surprisal as well as of syllable prominence, phrase boundary, and speech rate. Correlates of phonetic encoding density are extracted from a subset of the BonnTempo corpus for six languages: American English, Czech, Finnish, French, German, and Polish. Surprisal is estimated from segmental n-gram language models trained on large text corpora. Our findings are generally compatible with a weak version of Aylett and Turk's Smooth Signal Redundancy hypothesis, suggesting that prosodic structure mediates between the requirements of efficient communication and the speech signal. However, this mediation is not perfect, as we found evidence for additional, direct effects of changes in surprisal on the phonetic structure of utterances. These effects appear to be stable across different speech rates.

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Section: Discussionmentioning

confidence: 99%

Dimensions of Segmental Variability: Interaction of Prosody and Surprisal in Six Languages

et al. 2018

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“…Contrary to Aylett and Turk [3], we chose a biphone LM due to the restricted number of different syllables in the BonnTempo corpus. In addition, the relationship between information density and phonetic structures is assumed to be better reflected by phoneme LMs [30]. The factor levels high, medium and low language redundancy [3] are not necessarily comparable across languages, in contrast to the continuous variable surprisal.…”

Section: Discussionmentioning

confidence: 99%

Impact of prosodic structure and information density on vowel space size

Schulz¹,

Oh²,

Malisz³

et al. 2016

Speech Prosody 2016

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We investigated the influence of prosodic structure and information density on vowel space size. Vowels were measured in five languages from the BonnTempo corpus, French, German, Finnish, Czech, and Polish, each with three female and three male speakers. Speakers read the text at normal, slow, and fast speech rate. The Euclidean distance between vowel space midpoint and formant values for each speaker was used as a measure for vowel distinctiveness. The prosodic model consisted of prominence and boundary. Information density was calculated for each language using the surprisal of the biphone Xn|Xn−1. On average, there is a positive relationship between vowel space expansion and information density. Detailed analysis revealed that this relationship did not hold for Finnish, and was only weak for Polish. When vowel distinctiveness was modeled as a function of prosodic factors and information density in linear mixed effects models (LMM), only prosodic factors were significant in explaining the variance in vowel space expansion. All prosodic factors, except word boundary, showed significant positive results in LMM. Vowels were more distinct in stressed syllables, before a prosodic boundary and at normal and slow speech rate compared to fast speech.

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“…Such queries would be impossible in an orthographically rendered corpus. For example, several studies have examined the potential role of functional load, a measure of the strength of a phonological contrast, in phoneme mergers and neutralizations in Korean (Eychenne and Jang, 2015;Silverman, 2010) and across languages, including Korean (Oh, Coupé, Marsico, & Pellegrino, 2015;Wedel, Jackson, & Kaplan, 2013a;Wedel, Kaplan, & Jackson, 2013b). However, the Korean data used in these studies were "phonological" forms similar to our orthographic forms and/or forms phonetized by rules, which as we have seen often do not reflect the actual pronunciation.…”

Section: Discussionmentioning

confidence: 89%

K-SPAN: A lexical database of Korean surface phonetic forms and phonological neighborhood density statistics

2017

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This article presents K-SPAN (Korean Surface Phonetics and Neighborhoods), a database of surface phonetic forms and several measures of phonological neighborhood density for 63,836 Korean words. Currently publicly available Korean corpora are limited by the fact that they only provide orthographic representations in Hangeul, which is problematic since phonetic forms in Korean cannot be reliably predicted from orthographic forms. We describe the method used to derive the surface phonetic forms from a publicly available orthographic corpus of Korean, and report on several statistics calculated using this database; namely, segment unigram frequencies, which are compared to previously reported results, along with segment-based and syllable-based neighborhood density statistics for three types of representation: an "orthographic" form, which is a quasi-phonological representation, a "conservative" form, which maintains all known contrasts, and a "modern" form, which represents the pronunciation of contemporary Seoul Korean. These representations are rendered in an ASCIIencoded scheme, which allows users to query the corpus without having to read Korean orthography, and permits the calculation of a wide range of phonological measures.

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Bridging phonological system and lexicon: Insights from a corpus study of functional load

Cited by 27 publications

References 58 publications

Dimensions of Segmental Variability: Interaction of Prosody and Surprisal in Six Languages

Dimensions of Segmental Variability: Interaction of Prosody and Surprisal in Six Languages

Impact of prosodic structure and information density on vowel space size

K-SPAN: A lexical database of Korean surface phonetic forms and phonological neighborhood density statistics

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