Tid: Onsdag 5 oktober 2016, kl. 15:00–17:00
Plats: C389, Södra huset, Frescati

On cues of speech expressivity

Abstract

In this work sound meaning relations are taken into account by analyzing the expressive use of Brazilian Portuguese rhotic  varieties in the context of poem reciting by a professional actor. Co-ocurrent prosodic aspects of voice quality and voice quality dynamics are also analyzed. Based on the characteristics of voice, noise and vibration, a  gradience of salience from the more salient rhotic variety to the less salient is proposed. The methodological procedures conjugated perceptual and acoustic analysis. The corpus is an epic poem by Castro Alves recorded by a professional actor. All the rhotics in the data were phonetically describe and the productions of the poem stanzas were analyzed by a set  of acoustic measures and evaluated perceptually by a group of judges as to the kind of activation (agitated-relaxed)  perceived in the way of speaking.  The idea was to verify if more salient rhotic varieties were more productive in the stanzas perceived as  agitated  and  less salient in those categorized as relaxed.  The perceptual tests were answered by a group of 30 undergraduate students. The acoustic measures the  were automatically extracted by the ExpressionEvaluator Script developed by Barbosa (2009). The stanzas were also analyzed by means of the VPAS and  prosodic features (pitch, loudness and speech rate) produced by the  speaker.  In order to correlate the quantitative and qualitative measures a multivariate analysis was performed. The results of the application of the multivariate analysis indicate that among the quantitative measures, the perceptual evaluation of activation, the acoustic measures related to f0, intensity and long term spectrum were found to be relevant in clustering the stanzas and consequently explaining the data. As far as the qualitative measures are concerned tenseness and loudness and pitch were found to be relevant. The choice of rhotic  varieties in the analyzed speech  data is  interpreted as deriving from the acoustic shaping of the phonetic characteristics so  as to produce impressive meaningful effects.

Prosodic variation in reading, narration, political and journalistic discourses in four languages: preliminary results

Abstract

A project to study of acoustic-phonetic differences across four speaking styles in four languages allowed us to characterize the prosody of culture- and language-related aspects of these styles. Our corpus contains recordings of Brazilian and European Portuguese (BP and EP), Standard French and German. The four speaking styles are reading, narration (non-professional speech) and journalistic and political discourses (professional speech). In each language, the same five male and five female native speakers read a story about the origin of the Belém pastries and immediately narrated it. For the second subset of the corpus, a selection of 3 male and 3 female journalists and 3 male and 3 female politicians from local TV was done by each collaborator of the project. This selection concerns excerpts from 2 to 3 minutes of speech from reporters' commentaries and discourses in the parliament or to the general public on TV. As for political discourse, F0 median, skewness and peak rate split the groups formed by BP and French from the one formed by German and EP. Journalistic discourses in French and BP are distinguished by a higher F0 standard deviation in BP and a higher F0 peak rate in French. As for reading and narration, F0 standard deviation is higher in German, whereas F0 mean slope is reduced in BP in reading in comparison with the other 3 languages.  Narration also seems to distinguish BP from the other languages in terms of melodic parameters.

Information om föreläsarna:

Sandra Madureira, Professsor
Laboratório Integrado de Análise Acústica e Cognição - LIAAC
Departamento de Linguística da Faculdade de Comunicação Letras e Artes
Pontifícia Universidade Católica de São Paulo (PUC-SP), Brazil

Plinio A. Barbosa, Associate Professor
Department of Linguistics/Instituto de Estudos da Linguagem
State University of Campinas & CNPq, Brazil

Hjärtligt välkomna!
Anders Eriksson