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This paper contributes to the understanding of vocal folds oscillation during phonation. In order to test theoretical models of phonation, a new experimental set-up using a deformable vocal folds replica is presented. The replica is shown to be able to produce self sustained oscillations under controlled experimental conditions. Therefore different parameters, such as those related to elasticity, to acoustical coupling or to the subglottal pressure can be quantitatively studied. In this work we focused on the oscillation fundamental frequency and the upstream pressure in order to start (on-set threshold) either end (off-set threshold) oscillations in presence of a downstream acoustical resonator. As an example, it is shown how this data can be used in order to test the theoretical predictions of a simple one-mass model.
A visual articulatory model and its application to therapy
of speech disorders : a pilot study
(2005)
A visual articulatory model based on static MRI-data of isolated sounds and its application in therapy of speech disorders is described. The model is capable of generating video sequences of articulatory movements or still images of articulatory target positions within the midsagittal plane. On the basis of this model (1) a visual stimulation technique for the therapy of patients suffering from speech disorders and (2) a rating test for visual recognition of speech movements was developed. Results indicate that patients produce recognition rates above level of chance already without any training and that patients are capable of increasing their recognition rate over the time course of therapy significantly.
In order to investigate the articulatory processes of the hasty and mumbled speech of clutterers, the kinematic variability was analysed by means of electromagnetic midsagittal articulography (EMMA). In contrast to stutterers, clutterers improve their intelligibility by concentrating on their speech task. Variability is an important criterion in comparable studies of stuttering and is discussed in terms of the stability of the speech motor system. The aim of the current study was to analyse the spatial and temporal variability in the speech of three clutterers and three control speakers. All speakers were native speakers of German. The speech material consisted of repetitive CV-syllables and foreign words, because clutterers have the most severe problems with long words which have a complex syllable structure. The results showed a higher quotient of variation for clutterers in the foreign word production. For the syllable repetition task, no significant differences between clutterers and controls were found. The extremely large and variable displacements were interpreted as a strategy that helps clutterers to improve the intelligibility of their speech.
This paper summarizes our research efforts in functional modelling of the relationship between the acoustic properties of vowels and perceived vowel quality. Our model is trained on 164 short steady-state stimuli. We measured F1, F2, and additionally F0 since the effect of F0 on perceptual vowel height is evident. 40 phonetically skilled subjects judged vowel quality using the Cardinal Vowel diagram. The main focus is on refining the model and describing its transformation properties between the F1/F2 formant chart and the Cardinal Vowel diagram. An evaluation of the model based on 48 additional vowels showed the generalizability of the model and confirmed that it predicts perceived vowel quality with sufficient accuracy.
We measure face deformations during speech production using a motion capture system, which provides 3D coordinate data of about 60 markers glued on the speaker's face. An arbitrary orthogonal factor analysis followed by a principal component analysis (together called a guided PCA) of the data has showed that the first 6 factors explain about 90% of the variance, for each of our 3 speakers. The 6 derived factors, therefore, allow us to efficiently analyze or to reconstruct with a reasonable accuracy the observed face deformations. Since these factors can be interpreted in articulatory terms, they can reveal underlying articulatory organizations. The comparison of lip gestures in terms of data derived factors suggests that these speakers differently maneuver the lips to achieve contrast between /s/ and /R/. Such inter-speaker variability can occur because the acoustic contrast of these fricatives is shaped not only by the lip tube but also by cavities inside the mouth such as the sublingual cavity. In other words, these tube and cavity can acoustically compensate each other to produce their required acoustic properties.
The contribution of von Kempelen's "Mechanism of Speech" to the 'phonetic sciences' will be analyzed with respect to his theoretical reasoning on speech and speech production on the one hand and on the other in connection with his practical insights during his struggle in constructing a speaking machine. Whereas in his theoretical considerations von Kempelen's view is focussed on the natural functioning of the speech organs – cf. his membraneous glottis model – in constructing his speaking machine he clearly orientates himself towards the auditory result – cf. the bag pipe model for the sound generator used for the speaking machine instead. Concerning vowel production his theoretical description remains questionable, but his practical insight that vowels and speech sounds in general are only perceived correctly in connection with their surrounding sounds – i.e. the discovery of coarticulation – is clearly a milestone in the development of the phonetic sciences: He therefore dispenses with the Kratzenstein tubes, although they might have been based on more thorough acoustic modelling.
Finally, von Kempelen's model of speech production will be discussed in relation to the discussion of the acoustic nature of vowels afterwards [Willis and Wheatstone as well as von Helmholtz and Hermann in the 19th century and Stumpf, Chiba & Kajiyama as well as Fant and Ungeheuer in the 20th century].
In order to understand the functional morphology of the human voice producing system, we are in need of data on the vocal tract anatomy of other mammalian species. The larynges and vocal tracts of four species of Artiodactyla were investigated in combination with acoustic analyses of their respective calls. Different evolutionary specializations of laryngeal characters may lead to similar effects on sound production. In the investigated species, such specializations are: the elongation and mass increase of the vocal folds, the volume increase of the laryngeal vestibulum by an enlarged thyroid cartilage and the formation of laryngeal ventricles. Both the elongation of the vocal folds and the increase of the oscillating masses lower the fundamental frequency. The influence of an increased volume of the laryngeal vestibulum on sound production remains unclear. The anatomical and acoustic results are presented together with considerations about the habitats and the mating systems of the respective species.
Four speakers repeated 8 times 15 sentences containing 'pVp' syllables (V being /a/, /i/ and /u/). The 'pVp' syllables were located in final, penultimate and antepenultimate position relatively to the Intonational Phrase (IP) boundary. They were embedded in lexical words of 1-3 syllables and were either word-initial or word-final. Results show that the closer the vowel in word-final position is to the IP boundary, the longer the duration and the higher the fundamental frequency of the vowel; it is also characterised by larger lip opening gestures. The potential reduction or coarticulation of vowels in wordinitial position compared to their counterparts in word-final position is discussed.
This paper employs empirical methods to examine verbs such as seem, for which the traditional raising to subject analysis relates pairs of sentences which differ by taking an infinitival or sentential complement. A corpus-driven investigation of the verbs seem and appear demonstrates that information structure and evidentiality both play a determinate role in the choice between infinitival or sentential complementation. The second half of the paper builds upon the corpus results and examines the implications for the standard claims concerning these constructions. First, pairs of sentences related by the subject-to-subject raising analysis of verbs are often viewed as equivalent. New evidence from indefinite generic subjects shows that whether an indefinite generic subject occurs in the infinitival or sentential complement construction leads to truth-conditional differences. Further implications are explored for the claim that subjects of the infinitival variant may take narrow-scope: once various confounds are controlled for, the subject of the infinitival construction is shown to most naturally take wide-scope.
This paper focuses on different subtypes of constructions involving temporally bounded quantification, e.g. sequences like David visited Rome three times followed by temporal phrases as different as (i) last year, which defines a time interval; (ii) in less that two months, which defines an amount of time; and (iii) per month, which refers to a time unit. As for the first two types of temporal phrases, data will be presented which shows that they have specific linguistic properties in these quantifying contexts, and do not behave exactly as the locating or duration adverbials they are superficially identical with. The third type of phrases will receive special attention. Structures with frequency adverbials like n times per month will be analysed compositionally, separating the quantified component n times from the temporally binding phrase per month (whose role is comparable to that of adverbials (i) and (ii) in the relevant constructions). The data presented is mainly from Portuguese, although the issues at stake – the linguistic properties of temporally bounded quantification – are obviously relevant to parallel constructions in other languages.
This paper looks at sentences with "quantificational indefinites," discussed by Diesing (1992) and others. I propose that these sentences generate sets of alternatives of the form {p, not p and it's possible that p}, which restrict the quantification by an extension of familiar focus principles. For example, in the sentence "I usually read a book about slugs" (on the relevant reading), "usually" quantifies over pairs <x,t> such that x is a book about slugs, t is a time interval, and one alternative is true from the set {I read x at t, I can but do not read x at t}. In addition to accounting for a well-known contrast between creation and non-creation verbs, this also explains a second contrast that Diesing’s analysis cannot account for.
Russian and Spanish each have two variants of the predicational copular sentence. In Russian, the variation concerns the case of the predicate phrase, which can be nominative or instrumental, while in Spanish, the variation involves the choice of the copular verb, either ser or estar. It is shown that the choice of the particular variant of copular sentence in both languages depends on the speaker’s perspective, i.e., on whether or not the predication is linked to a specific topic situation.
There is an elegant account, proposed by Beaver and Condoravdi (2003), that assumes that the temporal connectives before and after are converses (i.e., they are analyzed by means of a unified lexical schema), and that explains away their different logical and veridical behavior appealing to other factors. There is an elegant explanation that connects the licensing of Polarity Items to informational strengthening requirements: Polarity Items are viewed as existentials that lead to a widening of the domain of quantification, and they are predicted to be legitimate only when this widening leads to a stronger statement (roughly, in downward monotone contexts). My plan is to connect these two approaches – by proposing an amendment in the definition Beaver and Condoravdi presented for before and after that is meant to account also for their Polarity Items licensing behavior.
This paper examines how questions, both Wh-questions and yes-no questions, are phrased in Chimwiini, a Bantu language spoken in southern Somalia. Questions do not require any special phrasing principles, but Wh-questions do provide much evidence in support of the principle Align-Foc R, which requires that focused or emphasized words/constituents be located at the end of a phonological phrase. Question words and enclitics are always focused and thus appear at the end of a phrase. Although questions do not require any new phrasing principles, they do display complex accentual (tonal) behavior. This paper attempts to provide an account of these accentual phenomena.
This paper presents a preliminary survey of the positions and prosodies associated with Wh-questions in two Bantu languages spoken in Malawi. The paper shows that the two languages are similar in requiring focused subjects to be clefted. Both also require 'which' questions and 'because of what' questions to be clefted or fronted. However, for other non-subjects Tumbuka rather uniformly imposes an IAV (immediately after the verb) requirement, while Chewa does not. In both languages, we found a strong tendency for there to be a prosodic phrase break following the Wh-word. In Tumbuka, this break follows from the general phrasing algorithm of the language, while in Chewa, I propose that the break can be best understood as following from the inherent prominence of Wh-words.
This paper sketches the morphosyntactic and prosodic properties of questions in Fipa, discussing three varieties: Milanzi, Nkansi and Kwa. The general word order and morphological patterns relevant to question structures are outlined and different types of wh-question constructions are described and tentatively linked to the prosodic features of Fipa questions.
The purpose of this paper is to show how WH questions interact with the complex tonal phenomena which we summarized and illustrated in Hyman & Katamba (2010). As will be seen, WH questions have interesting syntactic and tonal properties of their own, including a WH-specific intonation. The paper is structured as follows: After an introduction in §1, we successively discuss non-subject WH questions (§2), subject WH questions (§3), and clefted WH questions (§4). We then briefly present a tense which is specifically limited to WH questions (§5), and conclude with a brief summary in §6.
This questionnaire is intended as an aid to eliciting different question types, including yes/no questions, alternative questions, and wh-questions on a range of constituents. We have taken care to include examples that allow one to test for common Bantu phenomena, such as a subject/non-subject asymmetry in wh-questions and an obligatory immediately after the verb (IAV) position for questioning verb complements. The questionnaire is intended as a guide, only, as every language will have its own set of possibilities and complications. At the end of the questionnaire is a checklist. While we had Bantu languages in mind in devising the questionnaire, we hope it will also be useful to linguists with an interest question constructions in other languages.
In this paper, we deal with the semantic interaction between ung-nominalizations of different event types and temporal prepositions like wiihrend 'during', vor 'before', nach 'after', bis 'until' and seit 'since'. According to the two-level-approach to selnantics (Bierwisch 1983, Bierwisch / Lang 1989), we will argue that the meaning of ten~poral prepositions is determined on the level of semantic form (SF). When combined with an event nominal, the period in time required by the preposition has to be inferred on the level of conceptual structure (CS). Very often, the exact nature of the period in time is determined by pragmatic factors. There are, however, some important restrictions to this inference procedure which rely on the event noun's Aktionsart. In Ehrich/Rapp (2000), it was claimed that eventive ungnominals inherit the Aktionsart of their base verb. This assumption receives strong support by the data presented in this paper.
This article aims to recast the properties of topic-prominent languages and their differences from subject-prominent languages as documented in the functionalist literature into the framework of the Principle-and-Parameter approach. It provides a configurational definition of the topic construction called Topic Phrase (TP), with the topic marker as its head. The availablity of TP enables topic prominent languages to develop various topic structures with properties such as morphological marking; cross-categorial realization of topics and comments; and mutiple application of topicalization. The article elaborates the notion of topic prominence. A topic prominent language is characterized as one that tends to activate the TP and to make full use of the configuration. Typically, it has a larger number and variety of highly grammaticalized topic markers in the Lexicon and permits a variety of syntactic categories to occur in the specifier position and the complement position of TP.