Tomás Dubeda

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By examining acoustic marks of Czech stress, this paper attempts to provide an answer to the question of whether or not perceived accents in the Czech language have an objective existence. A neural network is used to predict the position of accents without lexical information. Three parameters (intonation, duration and intensity) are considered(More)
The present paper examines three methods of intonational stylization in the Czech language: a sequence of pitch accents, a sequence of boundary tones, and a sequence of contours. The efficiency of these methods was compared by means of a neural network which predicted the f0 curve from each of the three types of input, with subsequent perceptual assessment.(More)
The present paper provides an acoustic description of macrointensity patterns of stress units (prosodic words) in read Czech, as reflected by the intensity of syllable nuclei. Normalized intensity values show that there is a gradual macrodynamic decrease over the inter-pause group, followed typically by a significant intensity reset. Local intensity drops(More)
In this paper we examine cases of non-final nucleus (or sentence stress) in English, Czech and Hungarian. These three languages differ substantially with respect to word order rules, prosodic plasticity (ability to signal information structure by shifting the nucleus) and the degree of grammaticalization in nucleus position. Recordings of parallel texts are(More)
An analysis of prenuclear accents in read speech is carried out with the aim of finding instances of regularity in their distribution. Significant differences are identified with respect to position within the phrase and phrase length, some of which are correlated with declination and pitch span narrowing. Only a weak interaction is found between nuclear(More)
In this paper we investigate a particular type of stress marking in Czech, in which the syllable perceived as prominent is not accompanied by any clearly audible change in the overall pitch course. The paper gives a perceptual, phonotactic and acoustic account of these “flat pitch accents”. No positional effects or semantic correlates of words bearing this(More)