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In the present paper, I will argue that even in a language like German, where the verb system does not contain a grammaticized aspect distinction, aspectual features do underlie the early form-function-mapping of verb forms in L1-acquisition. Furthermore, it will be argued that it is not only past tense forms that may receive an aspectual interpretation in early child language but also other forms of the verbal input. In the case of German, these are the forms of the present tense paradigm and the past participle. Showing and discussing various piecesof evidence for this assumption should strengthen the "aspect before tense" or "primacy of aspect" hypothesis. In general, the paper aims at a deeper understanding of the hierarchical relation between tense and aspect whereby aspect is the basic category and, therefore, aspectual features are the inevitable starting point of the acquisition of grammar.
This paper deals with the emergence of verb morphology in one German child up to the time mini-paradigms occur in the data. I will focus on the role of protomorphology as a transitional stage between rote learning and the productive use of morphological distinctions.
In the following, we will discuss the acquisition of plural forms in German from the unified perspective of the two, in our opinion compatible, approaches, on the basis of a longitudinal data sample of eight children. There are at least six recordings of each child, all of whom are girls. Together, the data cover the acquisition period from 1;11 to 2;10. One may thus anticipate that the data sample under investigation reflects the transition from purely lexical memorization to the acquisition of regularities or patterns.
In these conclusions we can deal only with some of the tentative comparative results of the workshop papers on the early development of verb morphology. The main focus is on criteria of how the child detects morphology and how this emerging morphological competence develops in its earliest phases. In view of the purpose and tentative character of these conclusions, all references will be limited to the papers of the workshop and to earlier studies by workshop participants within the "Crosslinguistic Project on Pre- and Protomorphology in Language Acquisition". Much more will be given in the projected final publication.
Introduction
(2000)
Focus on verbal operators such as aspect or tense ("predication focus", lucidly described by Hyman & Watters (1984) under the label "auxiliary focus") has been noticed to exist in African languages of Afroasiatic and Niger-Congo affiliation, but not so far in Saharan. The Saharan language Kanuri is assumed to have substantially reorganized its TAM system, particularly in the perfective aspect domain (Cyffer [2006] dates major changes between the years 1820 and 1900). The paper discusses, for the first time in Kanuri scholarship, the existence of a neat subsystem of predication focus marking by suffix in the perfective aspect which is made up of a total of six conjugational paradigms that uniformly encode predication focus by suffix {-ò}. Kanuri dialects differ in strategies and scope of focus marking encoded in verb morphology. In the light of data from the Yerwa (Nigeria) and Manga (Niger) dialects the paper discusses some "anomalies" with regard to general focus theory which we account for by describing the "Kanuri Focus Shift" as a diachronic process which is responsible for leftward displacement of scope of focus.
Some conceptual and empirical issues in linguistic theory : an illustration with pronominal clitics
(2001)
I would like to discuss a few general conceptual issues in linguistic theory, and see how they bear on some empirical facts about pronominal clitics. In particular, I would like to show that the conception of linguistic theory, justified on independent grounds, limits the class of issues and possible explanations for grammatical properties of specific linguistic expressions. I argue that this is not simply a consequence of a specific conception of grammar, conceived of as a system of principles and rules governing language, but has non-trivial empirical ramifications. Pronominal clitics are a good case study, since their grammatical properties bear on a wide range of facts falling under the purview of principles of phonology, morphology, syntax and semantics.
(Non)retroflexivity of slavic affricates and its motivation : Evidence from polish and czech <č>
(2005)
The goal of this paper is two-fold. First, it revises the common assumption that the affricate <č> denotes /t͡ʃ/ for all Slavic languages. On the basis of experimental results it is shown that Slavic <č> stands for two sounds: /t͡ʃ/ as e.g. in Czech and /ʈʂ/ as in Polish.
The second goal of the paper is to show that this difference is not accidental but it is motivated by perceptual relations among sibilants. In Polish, /t͡ʃ/ changed to /ʈʂ/ thus lowering its sibilant tonality and creating a better perceptual distance to /tɕ/, whereas in Czech /t͡ʃ/ did not turn to /ʈʂ/, as the former displayed sufficient perceptual distance to the only affricate present in the inventory, namely, the alveolar /t͡s/. Finally, an analysis of Czech and Polish affricate inventories is offered.
Questions in Northern Sotho
(2006)
This article gives an overview of the marking of polar and constituent questions in Northern Sotho, a Bantu language of South Africa. It thereby provides a contribution to the typological investigation of sentence types in the world’s languages. As will be shown, Northern Sotho follows cross-linguistic tendencies in marking interrogative sentences: It uses intonation as main indicator in polar questions and question words as main indicator in constituent questions. Nevertheless, it also shows interesting language-specific variation, e.g. with respect to the location of raised intonation in polar questions, the presence of two pragmatically distinct question particles in polar questions, or a split in the formation of constituent questions based on the grammatical function of the questioned constituent.
Zulu shows an alternation of conjoint and disjoint (conjunctive/disjunctive, short/long) verb forms. Certain contexts suggest that the distribution of these forms is related to focus. For example, certain adverbial expressions receive a focal interpretation when preceded by a conjoint form but not when preceded by a disjoint form. Similarly, a wh-phrase must be preceded by a conjoint form. This has led some researchers to argue or suggest that the alternation encodes focus directly. This paper examines two different focal hypotheses, one in which a disjoint form encodes focus on the verb and another in which the conjoint form encodes focus on the element following the verb. It is shown that both of these hypotheses are inadequate because certain contexts requiring the conjoint form do not display the predicted focal interpretation. Relativization morphology is argued to also support an analysis independent of focus. It is proposed that the alternation is regulated entirely by the position of the verb within the surface constituencies first proposed in Van der Spuy (1993) and that the associated focal interpretations are the result of a range of interpretations permitted within the different constituencies. Elements remaining within the relevant constituent are nontopical, and focus is one of a range of interpretations they can receive.
Beria, a member of the Saharan language family, is one of the rare languages in Africa exhibiting both an ergative and an active/agentive alignment system of grammatical relations.1 While the active/agentive pattern is shown by the participant reference markers, the ergative pattern is attested both in the constituent order and in the focus markers on the core constituents. In the pragmatically unmarked constituent order, the Agent constituent precedes the Patient constituent. An unmarked single constituent immediately preceding the verb may represent a Patient or a Subject argument. In this position, the Agent constituent requires the clitic GU. The focused Patient and Subject constituents are both either marked by the clitic DI or by a cleft construction.
In this paper I argue that the syntax of Eastern Bantu does not make reference to the notion 'syntactic object'. That is, there is no linguistic category of objects that is the target of syntactic rules in Eastern Bantu languages. Instead I propose that syntactic rules broadly distinguish complements and adjuncts as well as category type of complement or adjunct. I argue that Bantu languages are typologically special in that (a) the verb complement structure can be expanded by the valency increasing applicative suffix; and (b) that the class of adjuncts can be expanded through verb concord licensing. Because of these properties, Bantu languages have a much-expanded notion of 'complement' and 'adjunct'. Namely, complements consist of (a) inherent complements (subcategorised by the lexical verb), and (b) derived complements (licensed by the applicative suffix). Adjuncts consist of (a) non-subcategorised modifying constituents in the usual sense and (b) phrases that are licensed by verb concord (i.e. Topics in Bresnan and Mchombo (1987)). I propose that most the differences in the licensing of objects in Bantu are due to two causes: (a) the unusual split in the composition of complements and adjuncts and (b) a set of typological parameter settings.
Complex focus versus double focus : investigations on multiple focus interpretations in Hungarian
(2006)
The main aim of this paper is to point out several problems with the semantic analysis of Hungarian focus interpretation and 'only'. For current semantic analyses the interpretation of Hungarian identificational/exhaustive focus and 'only' is problematic, since in classical semantic analyses 'only' is identified with an exhaustivity operator. In this paper I will discuss multiple focus constructions and question-answer pairs in Hungarian to show that such a view cannot be applied to Hungarian exhaustive focus. Next to this I will discuss possible interpretations of Hungarian sentences containing multiple prosodic foci: complex focus versus double focus. My claim is that in order to interpret multiple focus (in Hungarian) we have to take into consideration the different intonation patterns, the occurrence of 'only', and the syntactic structure as well.
The distribution of trimoraic syllables in German and English as evidence for the phonological word
(2000)
In the present article I discuss the distribution of trimoraic syllables in German and English. The reason I have chosen to analyze these two languages together is that the data in both languages are strikingly similar. However, although the basic generalization in (1) holds for both German and English, we will see below that trimoraic syllabIes do not have an identical distribution in both languages.
In the present study I make the following theoretical claims. First, I argue that the three environments in (1) have a property in common: they all describe the right edge of a phonological word (or prosodic word; henceforth pword). From a formal point of view, I argue that a constraint I dub the THIRD MORA RESTRICTION (henceforth TMR), which ensures that trimoraic syllables surface at the end of a pword, is active in German and English. According to my proposal trimoraic syllables cannot occur morpheme-internally because monomorphemic grammatical words like garden are parsed as single pwords. Second, I argue that the TMR refers crucially to moraic structure. In particular, underlined strings like the ones in (1) will be shown to be trimoraic; neither skeletal positions nor the subsyllabic constituent rhyme are necessary. Third, the TMR will be shown to be violated in certain (predictable) pword-internal cases, as in Monde and chamber; I account for such facts in an OptimalityTheoretic analysis (henceforth OT; Prince & Smolensky 1993) by ranking various markedness constraints among themselves or by ranking them ahead of the TMR. Fourth, I hold that the TMR describes a concrete level of grammar, which I refer to below as the 'surface' representation. In this respect, my treatment differs significantly from the one proposed for English by Borowsky (1986, 1989), in which the English facts are captured in a Lexical Phonology model by ordering the relevant constraint at level 1 in the lexicon.
Identity effects in phonology are deviations from regular phonological form (i.e. canonical patterns) which are due to the relatedness between words. More specifically, identity effects are those deviations which have the function to enhance similarity in the surface phonological form of morphologically related words. In rule-based generative phonology the effects in question are described by means of the cycle. For example, the stress on the second syllable in cond[ɛ]nsation as opposed to the stresslessness of the second syllable in comp[ǝ]nsation is described by applying the stress rules initially to the sterns thereby yielding condénse and cómpensàte. Subsequently the stress rules are reapplied to the affixed words with the initial stress assignment (i.e. stress on the second syllable in condense, but not in compensate) leaving its mark in the output form (cf. Chomsky and Halle 1968). A second example are words like lie[p]los 'unloving' in German, which shows the effects of neutralization in coda position (i.e. only voiceless obstruents may occur in coda position) even though the obstruent should 'regularly' be syllabified in head position (i.e. bl is a wellformed syllable head in German). Here the stern is syllabified on an initial cycle, obstruent devoicing applies (i.e. lie[p]) and this structure is left intact when affixation applies (i.e. lie[p ]Ios ) (cf. Hall 1992). As a result the stern of lie[p]los is identical to the base lie[p].
I argue in this study that consonantal strength shifts can be explained through positional bans on features, expressed over positions marked as weak at a given level of prosodic structure, usually the metrical foo!. This approach might be characterized as "templatic" in the sense it seeks to explain positional restrictions and distributional patterns relative to independently motivated, fixed prosodic elements. In this sense, it follows Dresher & Lahiri's (1991) idea of metrical coherence in phonological systems, namely, "[T]hat grammars adhere to syllabic templates and metrical patterns of limited types, and that these patterns persist across derivations and are available to a number of different processes ... " (251). [...] The study is structured as follows: section 1 presents a typology of distributional asymmetries based on data from unrelated languages, demonstrating that the stress foot of each of these languages determines the contexts of neutralization and weakening of stops. Section 2 elaborates the notion of a template, exploring some of its formal properties, while section 3 presents templatic analyses of data from English and German. Section 4 explores the properties of weak positions, especially weak onsets, in more detail, including discussion of templates in phonological acquisition. Section 5 summarizes and concludes the study.
The aim of this paper is to show what role prosodic constituents, especially the foot and the prosodic word play in Polish phonology. The focus is placed on their function in the representation of extrasyllabic consonants in word-initial, word-medial, and word-final positions.
The paper is organized as follows. In the first section, I show that the foot and the prosodic word are well-motivated prosodic constituents in Polish prosody. In the second part, I discuss consonant clusters in Polish focussing on segments that are not parsed into a syllable due to violations of the Sonority Sequencing Generalisation, i.e. extrasyllabic segments. Finally, I analyze possible representations of the extrasyllabic consonants and conclude that both the foot and the prosodic word play a crucial role in terms of licensing. My proposal differs from the ones by Rubach and Booij (1990b) and Rubach (1997) in that I argue that the word-initial sonorants traditionally called extrasyllabic are licenced by the foot and not by the prosodic word (cf. Rubach and Booij (1990b)) or the syllable (cf. Rubach (1997)). For my analysis I adopt the framework of Optimality Theory, cf. McCarthy and Prince (1993), Prince and Smolensky (1993), in which derivational levels are abandoned and only surface representations are evaluated by means of universal constraints.
In this work, I examine a set of languages which appear to require resyllabification postlexically; in less derivational terms, a word's syllabification in isolation differs from its syllabification in a phrase-internal context. Although many people, myself included, have been looking at such cases in isolation over the years, I bring together several examples here to see what features they share and how an Optimality Theory analysis improves upon rule-based derivational approaches.
The purpose of this paper is to provide a unified (i.e. independent of lexical categories) account of Persian stress. I show that by differentiating word- and phrase-level stress rules, one can account for the superficial differences exemplified in (1) above and many of the stipulations suggested by previous scholars. The paper is organized as follows. In section 1, I look at nouns and adjectives and propose a rule that would account for their stress pattern. In section 2, I extend the stress rule to verbs and show the problem this category poses to our generalization. The main proposal of this paper is discussed in section 3. I introduce the phrasal stress rule in Persian and show that by differentiating word-level and phrase-level stress rules, one can come to a unified account of Persian stress. Section 4 deals with some problematic eases for the proposed generalization and discusses some tentative solutions and their theoretical consequences. Section 5 concludes the paper.
Crosslinguistic research on the production of tense morphology in child language has shown that young children use past or perfective forms mainly with telic predicates and present or imperfective forms mainly with atelic predicates. However, this pattern, which has come to be known as the Aspect First Hypothesis, has been challenged in a number of comprehension studies. These studies suggest that children do not rely on aspectual information for their interpretation of tense morphology. The present paper tests the validity of the Aspect First Hypothesis in child Greek by investigating Greek-speaking children’s early comprehension of present, past and future tense morphology as well as the role that lexical aspect plays in the early use of tense morphology. It is suggested that although Greek-speaking children have not yet fully mapped the tense concepts to the correct tense morphology, tense acquisition does not seem to be significantly affected by the aspectual characteristics (i.e. the telicity) of the verb.
The paper proposes structural constraints for different adjunct classes in German and English. Approaches in which syntax has only the task to provide adjunct positions and in which principles of scope are supposed to explain the distribution of adjuncts are rejected as incomplete. The syntactic requirements are not as rigid as other approaches require, such that there is just one possible position for a given adjunct. Rather the syntactic constraints may be fulfilled in different positions.
In this paper the first results concerning the development of early verb morphology in an L1-English speaking child are presented. Adopting the framework of morphological development of Dressler (Dressler, this volume) the data of a girl from the CHILDES database, Nina of the Suppes corpus, is analysed with regard to the emergence of early verbal categories (e.g. number and person) and their appearance in a first mini-paradigm. In the sessions analysed so far the child Nina has reached an age of 2;2 when the first mini-paradigm emerges.
This paper deals with early verb development (e.g., person, tense) until the emergence of verb-paradigms in two French-speaking children.
I will show the parallelism between the two children in the gradual building of paradigms, despite considerable differences in the rate of development. Individual differences on the other hand will bring me to reconsider the broad category of premorphological rote-learnt forms which already displays some patterning in one of the children's data.
This paper studies the acquisition process of Spanish verbal morphology in a monolingual child. The study focuses on the period of the first 50 verb lemmas. This covers the period from age 1;7 till 1;10.
The data shows that the verb acquisition process of this Spanish child follows three main stages:
1. A lexical stage in which verbs are only acquired as a lexical element.
2. A syntactic stage in which the verb, still contemplated as a non-split word, becomes the main element in the development of thematic and semantic relations.
3. A morphological stage in which verb suffixes begin to be analysed separately. At this stage, the relationship between form and meaning starts and the functional categories linked to the verb (tense, aspect, agreement, mood... ) begin to be acquired. Just at this moment, the first miniparadigms appear, which suggests that the acquisition process of verb morphology has started.
The first two stages are premorphological and cover in our child the period till 1;9. In the last stage, which begins at 1;10, the child enters the protomorphological stage.
The source of the data used in this paper are recordings of conversations with a Lithuanian girl, Rūta. Rūta lives in Vilnius and is the only child in the family. Both parents speak standard Lithuanian without dialectal influences. The recordings were taken on a free basis without a fixed schedule, then transcribed by the mother of the child, double-checked and coded in accordance with CHILDES by the author of the paper. At the moment of writing this contribution the data taken between 1;7-2;5 have been fully processed. Over this period about 34.5 hours of recordings were collected.
With the rise of minimalism, many concepts related to the geometrical relations of phrase structure held fast to in earlier approaches have been reconsidered. This article deals with distinguishing (relational and technical) properties of specifiers and adjuncts in a Bare Phrase Structure framework (X'-Theory). I extend specific aspects of X-structure relevant to the discussion of specifiers vs. adjuncts. I argue that unique specifiers can be derived from the system and that adjunction, possibly multiple, results from Direct Merge only. The final product is a series of relationships in line with recent thoughts and minimalist premises, but formally more similar to earlier conceptions of the X'-schema.
I address conceptual, empirical and theoretical arguments against multiple specifiers and related issues next, that is beyond the predictions immediately following from the tripartitional view of clause structure proposed in Grohmann (2000). After laying out my motivations to critically consider the issue, I present a set of data that casts serious doubt over the justifications offered to replace Agr with v as the accusative casemarker. Having conceptual and empirical back-up, I then tackle the theoretical validity of specifiers, and ways to distinguish unique specifiers from (multiple) adjuncts. I introduce a version of Bare Phrase Structure that does so, yet keeps the spirit of defining structural identification over relational rather than categorial properties.
Focus theories distinguish different types of focus according to the pragmatic conditions or communicative point on the one side and different scopes of focus on the other side. The assertion in term focus constructions (Dik 1989), called by others argument focus constructions or identificational sentences (Lambrecht 1994), has the purpose of establishing a relation between an argument and an open proposition. Kar, a north-eastern Senufo language of Burkina Faso, which has the basic word order S-Aux-O-V-other, has at its disposal different strategies to mark argument focus, among them fronting of the focused item. In many West African languages the displacement of the focused argument involves other devices, such as the use of special verb forms. In Kar fronting of a focused argument requires the use of special pronouns in the out-of-focus part of the sentence, called background subject pronouns. They are used in other backgrounded contexts, too, for example in relative clauses, adverbial clauses and constituent questions. Their inconsistent use is attributed to a particular sociolinguistic situation in which the data has been collected. The use of the same focus strategies for completive and contrastive focus suggests that Kar does not distinguish pragmatic conditions on the level of sentence grammar.
Many analyses of existential sentences have focused attention on determining which of its elements constitutes the logical subject and predicate, and this has proven to be a not uncontroversial topic of research. Some, from both syntactic and semantic points of view, have argued that there is a subject (cf. Williams 1994) others that it is a predicate (cf. Moro 1997). Similarly, some have argued that the associate NP is a logical subject, others that it is apredicate (Higginbotham 1987).
One logical possibility that has not (to my knowledge) been pursued in the linguistics literature is that these statements are not of the form subject-predicate, a possibility that has been taken up in the philosophical literature by P.F. Strawson (1959). He claims that there are such statements and that their form is simpler than that of subject-predicate statements because it does not, and cannot, involve an expression that makes reference to an individual. Not involving reference to an individual, these sentences are therefore are made true by different means than a subject-predicate statement whose truth, in the simplest cases, depends on the denotation of the subject being a member of the denotation of the predicate. Of interest from the point of view of the present discussion is his claim that existential statements are examples of this kind of statement, which he calls a feature-placing statement. The truth of a statement of the form feature-placer requires that something with the set of features denoted by the associate NP exist at the location or coordinates expressed by the placer. In an existential sentence we can take the associate NP as the feature-denoting expression and the coda-XP as the placer.
The goal of this paper is to investigate cases of apparent noun-incorporation in Malagasy, a western Austronesian language spoken in Madagascar. Looking at examples [...], one may ask whether or not Malagasy has nounincorporation. [...] The organization of this paper is as follows: I begin with a general discussion of the distribution of nominals in Malagasy - with and without determiners. In section 3 I turn to […] two constructions […] and compare and contrast them. Section 4 details the analyses of the two constructions and I conclude the paper in section 5.
In this work, I provide an analysis of adjectival depictive constructions which accounts for most of their fundamental properties. First, I focus on the restrictions having to do with the integration of the depictive and the verbal predicate: they are based on aspectual compatibility between the two predicates, which, in turn, will depend on the ability, on the part of the depictive, to make reference to some (sub)event in the event structure of the verbal predicate. Facts not captured by previous approaches in the literature will be straightforwardly accounted for, among them the possibility to have I-L depictive constructions, and the impossibility to combine a depictive with some non-stative verbal predicates. Second, it will be shown that the informational import of the depictive in the sentence can be equivalent to that of the verbal predicate: both can be the primary lexical basis of predication. This is reflected in the sentence in various ways, having to do with aspectual modifiers, and in the properties of the sentential subject. In this connection, we will reconsider the notion of subject, arguing that no subject-predicate relation takes place in the lexical domain of sentences, and hence that the argument the depictive is oriented to, the common argument, cannot be a subject of the depictive. Finally, a minimalist analysis is proposed for the syntax of the construction, in terms of direct syntactic merge of predicative constituents and sidewards (q-to-q) movement for the common argument, from the lexical domain of the depictive to the lexical domain of the verb. As to morphosyntactic properties, a syntactic Double Agree relation is assumed to hold between T/v, as probes, on the one hand, and the common argument and depictive, as simultaneous goals, on the other, which would allow for the deletion of Case features on both goals. The assumed presence of Structural Case on the adjectival depictive will be responsible for the well-known restriction on the orientation of depictives to the sentential subject or object.
In this paper I put forward and justify a syntactic configuration that I call Complex Small Clause-structure. I show that this single syntactic structure can explain both the semantic value and the syntactic behavior of a range of constructions that up to now have been explored separately and, hence, proposed divergent analyses among them.
Even if we can generate a logical form, principles of use may limit the ways in which we can use it. In this paper, I motivate one such principle of use, and explore its effects. Much of the discussion involves kinds of sentences that have received attention in the literature on "individual-level predicates".
While the perilinguistic child is endowed with predispositions for the categorical perception of phonetic features, their adaptation to the native language results from a long evolution from the end of the first year of age up to the adolescence. This evolution entails both a better discrimination between phonological categories, a concomitant reduction of the discrimination between within-category variants, and a higher precision of perceptual boundaries between categories. The first objective of the present study was to assess the relative importance of these modifications by comparing the perceptual performances of a group of 11 children, aged from 8 to 11 years, with those of their mothers. Our second objective was to explore the functional implications of categorical perception by comparing the performances of a group of 8 deaf children, equipped with a cochlear implant, with normal-hearing chronological age controls. The results showed that the categorical boundary was slightly more precise and that categorical perception was consistently larger in adults vs. normal-hearing children. Those among the deaf children who were able to discriminate minimal distinctions between syllables displayed categorical perception performances equivalent to those of normal-hearing controls. In conclusion, the late effect of age on the categorical perception of speech seems to be anchored in a fairly mature phonological system, as evidenced the fairly high precision of categorical boundaries in pre-adolescents. These late developments have functional implications for speech perception in difficult conditions as suggested by the relationship between categorical perception and speech intelligibility in cochlear implant children.
This paper describes the processing of MRI and CT images needed for developing a 3D linear articulatory model of velum. The 3D surface that defines each organ constitutive of the vocal and nasal tracts is extracted from MRI and CT images recorded on a subject uttering a corpus of artificially sustained French vowels and consonants. First, the 2D contours of the organs have been manually extracted from the corresponding images, expanded into 3D contours, and aligned in a common 3D coordinate system. Then, for each organ, a generic mesh has been chosen and fitted by elastic deformation to each of the 46 3D shapes of the corpus. This has finally resulted in a set of organ surfaces sampled with the same number of 3D vertices for each articulation, which is appropriate for Principal Component Analysis or linear decomposition. The analysis of these data has uncovered two main uncorrelated articulatory degrees of freedom for the velum's movement. The associated parameters are used to control the model. We have in particular investigated the question of a possible correlation between jaw / tongue and velum's movement and have not find more correlation than the one found in the corpus.
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.