Boundary Tones Research Articles

COMPARATIVE ANALYSIS OF TEMPORAL PROSODIC PARAMETERS IN THE SPEECH OF FOREIGN STUDENTS LEARNING THE BULGARIAN LANGUAGE

The work examines the prosodic realization of the Bulgarian word stress in the speech of Chinese Mandarin speakers, with the aim of outlining the parameters that make the comprehensibility of their speech difficult. Instrumental phonetics methods are used and recordings of read speech are analyzed with the speech signal processing program Praat. The research is focused on the duration of the vowels as one of the acoustic ques of the word stress. To minimize the "inconsistency" of the binary division of stressed and unstressed units in connected speech (discussed in the literature), taking into account the fact that the acoustic keys of stress are subject to intonational shaping by tonal accents and boundary tones, we separately compare the duration of stressed vowels, the unstressed non-final and the unstressed final. The results show that the characteristic ratio of stressed and unstressed non-final vowels for Bulgarian language, in which the former outweigh the latter by about one and a half times, is not reached among Chinese speakers. Therefore, it is difficult to determine which vowel/syllable is stressed in their speech. The unstressed final vowels are longer than the stressed ones in both groups, which is an expected result due to the final lengthening before pause.

The effect of visual displays on the mastery of the forms and functions of English intonation by Chinese L2 students

This study examines the effectiveness of visual displays in improving the mastery of the forms and functions of English intonation among Chinese L2 students. Over a four-week period, two groups of learners (visual-training and auditory-training) took part in five sessions of intonation training, while a control group received no training. Each session began with a 25-minute lesson on the forms and functions of intonation, followed by a 40-minute practice session. All sentences were presented in communicative contexts. With the aid of speech visualization technology, the visual-training group was taught linguistic categories and English intonation structures, and was encouraged to imitate and practice intonation patterns using visual displays of the intonation of each sentence. The auditory-training group learned and practiced intonation by carefully listening to audio clips of each sentence. Intonation production was assessed using speech data from pre- and post-tests. Results showed that the visual-training group outperformed the other two groups, making the greatest progress in mastering the forms of English intonation (pitch accents and boundary tones) and its functions (expressing prominence and marking modality).

Phrase prosody of a southern Russian dialect: Rogovatoe

This paper deals with the phrase intonation of the Southern Russian dialect spoken in the village of Rogovatoe, in the Starooskol’sky district of the Belgorod region. The study is devoted to the analysis of the prosodic structure of various communicative categories: statements, yes-no questions, wh-questions, non-finality, imperative, and vocative. Based on the examination of more than 7000 sentences, I argue that the dialect of Rogovatoe uses only two monotonal pitch accents — H* and L* — as opposed to three bitonal accents of Modern Standard Russian. I also postulate two final boundary tones — H% and L% — for this dialect, while no proof of a phonological distinction between the high and the low phrase accents was found. Finally, the idiom of Rogovatoe employs the phonological distinction between the high and the low initial boundary tone — %H and %L. Therefore, the prosodic system of this Southern Russian dialect is much more focused on the level tones than Modern Standard Russian utilizing predominantly contour (rising and falling) tones.

LEXICAL AND POST-LEXICAL PROSODIC DOCUMENTATION OF EMBALOH LANGUAGE

This research investigated the prosody of the Embaloh language, which has yet to be widely explored, to document and preserve the language. The method used is data collection of spontaneous and non-spontaneous speeches from 12 native speakers. Prosodic analysis was then carried out based on visualising and observing speech sound waves using the autosegmental-metrical theory (AM) framework. The results show that prominence tends to be on the right edge at both lexical and post-lexical prosodic levels. The findings show that the Embaloh language is outside the mainstream of Austronesian languages, which places word stress at the penultimate syllable. At the post-lexical level in interrogative intonation, phrases with a question word are marked by the pitch accent located at the target question word in the nuclear contour of the phrase. The pitch accent follows the position of the question word in the intonation phrase, forward or backward, with one of the following tones: H* (high), LH* (low-high), or LHL* (low-high-low). The intonation of the question is indicated by the H(high) tone at the end of the phrase. The H (high) tone also acts as a boundary tone represented by H*% (high).

PHRASE PROSODY OF A MIDDLE-RUSSIAN DIALECT: TVER

t: This paper deals with the phrase prosody of Middle-Russian dialect with оkan’je spoken in Kal’azin district of Tver region. The study, based on the material of dialectal speech recordings made in the 2019 (eight speakers born in 1933–1955, total duration — 10 hours), reveals that the intonational system of Tver idiom is quite similar to the Standard one in regard to its prosodic constituents as well as to their association to basic communicative categories — yes-no and whquestions, statements, imperatives and vocatives. We posit in it three pitch accents — one rising L+H* and two falling H*(+L) and H+L* as well as two final boundary tones (L% and H%). There is no phonological contrast between the initial boundary tones in Kal’azin dialect, this differentiates the idiom in question from more southern Russian dialects. The most specific point in the phonetic realization of the melodic contours of the narrow focus statements and the yes-no questions in Tver idiom as compared to other Middle-Russian dialects and Standard Russian is the significant variability in timing of the rising and falling pitch accents — from the very early to the very late. Based on the data studied we claim thus that the Tver dialect demonstrates the transition from the characteristic dialectal prosodic system based on level pitch accents to the standard one with contour tunes being significantly ahead of the neighbouring Pskov and Seliger-Torzhok dialects on this way to Modern Standard Russian.

Secondary predication in Irish and the syntax-prosody interface

Cross-linguistically, secondary predicates may be distinguished from event-modifiers (e.g. adverbs or converbs) and individual-modifiers (e.g. attributive adjectives, participles, or prepositional phrases) via the presence or absence of prosodic processes and phonetic cues. This paper examines the prosodic behavior of secondary predicates in Modern Irish, which can form bare adjectival depictive and resultative secondary predicates. We show that Mod. Irish bare AP secondary predicates are distinguished from surface distributionally equivalent attributive modifiers through the morphophonological system of initial mutation and cues such as phrase-final lengthening and pauses. These facts support an analysis of secondary predicates as extraposition structures that project to a φ-max/ι-boundary, mapping to complex syntactico-semantic representations. Evidence from Italian consonant gemination (raddoppiamento sintattico) and Georgian boundary tones are likewise discussed under the proposed analysis.

Perception of the question tune in Guanzhong Mandarin

This study investigates the perception of the question tune in Guanzhong Mandarin and the interaction between tone and tune using the AX paradigm. Our findings reveal a complex interplay between lexical tones and question tunes, in which when the lexical tone is rising, it is more difficult to perceive question tunes. Furthermore, the research argues that the question tune retrieval requires extra working memory load and cognitive processing, because of the tune information brought by a high register and a high boundary tone.

Вариативност при реализацията на българска интонация

The study presents the intonational phonology of Contemporary Standard Bulgarian (CSB) and the BG_ToBI annotation system. CSB uses the following pitch accents: L*, L*+H, L+H*, H*, H+!H*; phrase accents: L-, H-, and !H-; and boundary tones: %H, L%, H%, !H%. In the realization of the pitch accents, there is often variable alignment between the tonal target and the boundaries of the lexically stressed syllable. This variability is due to both speaker-specific speech strategies and the position of the stressed syllable within the utterance. For example, when the H* pitch accent is near the beginning of the utterance, the high target is usually reached towards the end of the stressed syllable. When it is near the end of the utterance, the high target is reached towards the beginning of the stressed syllable. In rising accents (L*+H and L+H*), the high tone can be delayed up to three syllables after its original target. In signaling the information structure of the utterance, there is no one-to-one correspondence between the type of focus and the choice of pitch accent: the same type of focus can be ex-pressed with different accent types, and the same accent can signal different types of focus. For example, H* can signal broad focus, narrow focus, and contrastive focus; L+H* can signal narrow focus and contrastive focus. Thematic material is not necessarily deaccented. From a pragmatic and functional perspective, four different tunes associated with the various vocative types in Bulgarian are presented: neutral vocative (L+H* L-%), insistent vocative (L+<H* L-% [+long]), challenging chant (L* H-L% [+long]), and vocative chant (L+H* !H-% [+long]). When the final syllable is lengthened, the vowel in it is not fully reduced, which contradicts the phonological pattern of vowel reduction in CSB.

Personality perception in synthetic versus natural speech: The effects of voice quality and prosody

Synthetic speech technology, now approaching human-like naturalness due to advancements in deep learning, has turned to focusing on personality or persona design as a common practice in the industry. The present study aimed to identify speech characteristics affecting personality impressions in synthetic and natural speech. Thirty native Korean speakers participated in a personality rating experiment in which they evaluated natural Korean sentences and their synthetic counterparts in terms of the Big-Five personality model. Acoustic analyses were performed to examine voice quality and prosody, including Intonational Phrase (IP) boundary tones. The results revealed that scores of agreeableness, conscientiousness, and emotional stability increased overall when the voices contained greater aperiodicity in the harmonics (i.e., were likely breathier) and were weaker in energy. The results also demonstrated that different prosodic features affected personality perception in synthetic and natural speech; synthetic speech with a wider F0 range received higher scores on extroversion, openness, and emotional stability. In contrast, the effect of IP boundary tones was most frequently found for female natural speech, which contained a wider range of tones, including multitonals (e.g., LHL%). Our findings suggest that intonation is one of the key factors which can be adjusted to generate synthetic speech with various personalities.

Basic Intonation Patterns of Galician Spanish

This paper presents an inventory of pitch accents and boundary tones in Galician Spanish (GS), a variety spoken in Northwestern Spain. Research so far has focused on explaining GS intonation features as transfer phenomena from Galician, the vernacular Romance language in the region. Because of this, previous studies have often included Galician L1 speakers, for whom transfer is expected when speaking Spanish L2. However, GS is the single L1 of half the children in Galicia, and it is spoken almost exclusively by about a quarter of Galicians. Our study focuses on this population and investigates the relative frequency and distribution of tonal units in GS when direct transfer from Galician is unlikely. A corpus of 1706 sentences (statements, questions, imperatives, and vocatives in neutral and biased contexts) was obtained from 28 participants through a discourse completion task. Results showed that patterns previously attributed to direct transfer from Galician L1 (for example, upstepped final accents in neutral declaratives or falling contours in unmarked interrogatives) are widespread in GS as L1. Findings also show commonalities with other L1 Spanish varieties, both in Europe (for example, L* L% as the unmarked declarative ending) and America (for example, the L* + H prenuclear accent of Caribbean varieties).

Intonational Features of Spontaneous Narrations in Monolingual and Heritage Russian in the U.S.—An Exploration of the RUEG Corpus

This article presents RuPro, a new corpus resource of prosodically annotated speech by Russian heritage speakers in the U.S. and monolingually raised Russian speakers. The corpus contains data elicited in formal and informal communicative situations, by male/female and adolescent/adult speakers. The resource is presented with its architecture and annotation, and it is shown how it is used for the analysis of intonational features of spontaneous mono- and bilingual Russian speech. The analyses investigate the length of intonation phrases, types and number of pitch accents, and boundary tones. It emerges that the speaker groups do not differ in the inventory of pitch accents and boundary tones or in the relative frequency of these tonal events. However, they do differ in the length of intonation phrases (IPs), with heritage speakers showing shorter IPs also in the informal communicative situation. Both groups also differ concerning the number of pitch accents used on content words, with heritage speakers using more pitch accents than monolingually raised speakers. The results are discussed with respect to register differentiation and differences in prosodic density across both speaker groups.

Intonation Patterns of Chinese EFL Learners and Their Correlation with Holistic Prosody Ratings

Chinese English as a Foreign Language (EFL) learners often face challenges when acquiring intonation skills. This study employed AM theory as the theoretical framework and utilized the Tone and Break Indices (ToBI) labeling system to analyze 29 recordings of first-year English major female students enrolled at a university in China. The aim is to examine the intonation patterns exhibited by these learners and explore their correlation with prosody ratings. The findings revealed that H*, L+H*, and L* were the most commonly observed pitch accent types among Chinese EFL learners. Furthermore, the L tone predominated in phrase accents and boundary tones, while the prevalent intonation pattern in intonation phrase boundaries was identified as the L-L% pattern. The study also identified negative correlations between the proportion of L* and the proportion of L-, as well as between prosody ratings and phrase accent density, and between prosody ratings and the proportion of L*. These findings contribute to the existing body of knowledge on intonation acquisition and hold significant implications for language pedagogy.

A Research on the Use of Boundary Tone as a Turn-taking Mechanism in Chinese EFL Students’ Conversations

The boundary tone is one of the crucial mechanisms for the organization of English conversations. But for Chinese learners, the acquisition of this mechanism is not satisfying. This study examines the use of boundary tones at the turn transitions in Chinese EFL learners’ elicited English conversations. The results indicate that Chinese learners are not proficient in the use of boundary tones to show their intentions in turn exchanges, and the misuse of low L-L% boundary tone is the most prominent.

Compositionality in intonation: Evidence from Greek

The autosegmental-metrical (AM) theory of intonational phonology posits that tunes are composed of independent elements, pitch accents and edge tones. However, configurational approaches remain popular, while AM relies on but cannot prove compositionality. We addressed this issue with a corpus of Greek wh-questions (N = 2135), elicited from 18 speakers using a discourse completion task that involved communicative situations resulting in rise-fall-rises or rise-falls. The rise-fall-rises are autosegmentally represented as a L* + H pitch accent on the utterance-initial wh-word, followed by a L- phrase accent and a H% boundary tone; the rise-falls are represented as L + H* L − L%. We applied functional principal component analysis (FPCA), a data-driven method that breaks down curves into components that capture independent modes of curve variation, and followed FPCA with LMEMs on the principal component coefficients. The pitch movement associated with each of the posited tonal elements was captured by a different PC: PC2 captured differences in the extent of the rise and the peak alignment of the pitch accent, PC1 differences in fall steepness, and PC4 the difference between a final rise and low, flat pitch. These results provide prima facie evidence for tune compositionality, since the differences are driven by the analysis not human annotation.

A Preliminary Exploration of Declarative Intonation in the Chilean Diaspora of Sweden

Motivated by a growing body of research on heritage Spanish prosody, the current study uses the Sp_ToBi framework for the transcription of Spanish intonation to report trends in phonological targets of broad focus declaratives produced by heritage speakers of Chilean Spanish living in Stockholm, Sweden. Data were collected via semi-structured interviews from six participants belonging to the same social network including two Spanish-dominant first-generation immigrants and four Swedish-dominant second-generation speakers who were born and raised in Sweden and are heritage speakers of Spanish. The G1 participants are the primary source of Spanish input for the G2 speakers. Data were analyzed by identifying word- and phrase-level phonological targets and associating them with the appropriate pitch accent and boundary tones. Results show that the heritage Spanish declarative intonation patterns of the G2 speakers closely resemble those of the G1 speakers. These patterns are scrutinized in terms of the potential influence of Swedish and/or other varieties of Spanish. This analysis exhibits evidence of the importance of source input variety and cross-generational transmission of phonological targets in a heritage language as well as the potential contributions of multiple intonational systems in forming the phonological inventory of heritage speakers.

Declarative intonation of Japanese-Spanish bilinguals in Spanish casual speech

This study presents an analysis of Spanish intonation produced by native speakers of Japanese. The analysis focuses on the nuclear configurations of 828 declarative tokens in the semi-spontaneous Spanish speech of 12 Japanese-Spanish bilingual speakers living in Valencia, Spain. Results of the analysis show that the speakers can produce the prosodic differences between two declarative utterance types that are differentiated in peninsular Spanish by pitch peak timing and final boundary contours. Specifically, the speakers of this study favored rising final boundary tones when maintaining their turn and the falling final contours for the end of turn. Results show interlanguage with greater variation in final contours and pitch peak placement than predicted. The study contributes to acoustic research on learner intonation by late bilinguals, particularly in a language contact situation involving an Asian language and romance language pair.

Hierarchical distinctions in the production and perception of nuclear tunes in American English

In Autosegmental-Metrical models of intonational phonology, different types of pitch accents, phrase accents, and boundary tones concatenate to create a set of phonologically distinct phrase-final nuclear tunes. This study asks if an eight-way distinction in nuclear tune shape in American English, predicted from the combination of two (monotonal) pitch accents, two phrase accents, and two boundary tones, is evident in speech production and in speech perception. F0 trajectories from a large-scale imitative speech production experiment were analyzed using bottom-up(k-means) clustering, neural net classification, GAMM modeling, and modeling of turning point alignment. Listeners’ perception of the same tunes is tested in a perceptual discrimination task and related to the imitation results. Emergent grouping of tunes in the clustering analysis, and related classification accuracy from the neural net, show a merging of some of the predicted distinctions among tunes whereby tune shapes that vary primarily in the scaling of final f0 are not reliably distinguished. Within five emergent clusters, subtler distinctions among tunes are evident in GAMMs and f0 turning point modeling. Clustering of individual participants’ production data shows a range of partitions of the data, with nearly all participants making a primary distinction between a class of High-Rising and Non-High-Rising tunes, and with up to four secondary distinctions among the non-Rising class. Perception results show a similar pattern, with poor pairwise discrimination for tunes that differ primarily, but by a small degree, in final f0, and highly accurate discrimination when just one member of a pair is in the High-Rising tune class. Together, the results suggest a hierarchy of distinctiveness among nuclear tunes, with a robust distinction based on holistic tune shape and poorly differentiated distinctions between tunes with the same holistic shape but small differences in final f0. The observed distinctions from clustering, classification, and perception analyses align with the tonal specification of a binary pitch accent contrast {H*, L*} and a maximally ternary {H%, M%, L%} boundary tone contrast; the findings do not support distinct tonal specifications for the phrase accent and boundary tone from the AM model. 

Multimodal cues to intonational categories: Gesture apex coordination with tonal events

This study argues for a multimodal view of the identification, representation, and implementation of intonational structure, with evidence from gesture apex-tone coordination in Turkish. Many studies have reported consistent synchronisation of atomic prominence markers across modalities (i.e., pitch accents and gesture apexes). This is prima facie evidence that gesture and prosody are implemented together, and therefore the former can play a role in the identification and perception of the latter through apex-tone synchronisation. However, only few studies considered the full intonational context when investigating synchronisation (e.g., potential alignment of apexes with boundary tones). This is particularly relevant for Turkish as there is disagreement in the literature about whether all words in Turkish bear a pitch accent. In this study, we test the synchronisation of apexes with all intonational events in Turkish natural speech data annotated for gesture and prosody, resulting in 820 gesture apex and 3697 tonal event annotations. The study uses syllable duration (160ms) to determine synchronisation between these anchors via equivalence tests while also integrating gestural and prosodic context as factors that can affect the temporal distance between these units through mixed-effects linear regression. The findings showed that apexes were chiefly synchronised with pitch accents (71%), indicating that prominence was the primary constraint for synchronisation. However, analysis of cases with no prosodic prominence provides the first evidence for a hierarchical constraint on synchronisation, since apexes were preferentially synchronised with the tones marking prosodic words (76%) and not with the markers of prosodic constituents higher in the hierarchy. This finding supports the claim that there may be accentless words in Turkish since the absence of prominence caused a systematic shift in the synchronisation behaviour of apexes. More generally, the study shows how multimodal evidence from gesture can be used in the identification of phonological categories, and that prosodic structure is likely to be expressed through multimodal cues as a composite signal.

Musical Evidence for Low Boundary Tones in Ancient Greek

Abstract Several scholars have suggested that in ancient Greek there was a low boundary tone at the end of a relatively small prosodic constituent such as a clitic group or maximal prosodic word. The boundary tone may phonologically motivate some puzzling pitch-accentual phenomena in the language. One is the diachronic pitch-peak retraction that led to the circumflex pitch accent (HL) on penultimate syllables (the “sōtêra rule”). Another is the intonational phrase-internal downstepping or deletion of a word-final acute accent (H); that conversion of an acute to a grave accent is known as “lulling” or “koímēsis”. If such a low boundary tone existed, its effects should still be audible in ancient Greek non-strophic vocal music, where there is a significant correlation between the pitch movement of the text and the movement of the melody to which it is set, i.e. between tone and tune. Specifically, proponents of such a low boundary tone would predict that the turning point between falling and rising melody, the “musical trough”, should center around the word-final mora or syllable. The present study provides the first full description of troughs in the Delphic Hymns and finds that they are indeed closely aligned with word-end. Furthermore, once other factors that could lead to word-final troughs are set aside, i.e. once potential confounds are controlled for, the association of the trough with word-end remains strong, suggesting that we should in fact reconstruct the low boundary tone.

The prosody of surprise questions in Estonian

This paper examines the role of prosody in a little-studied type of non-canonical questions: syntactically and lexically canonical interrogative sentences that have been uttered by the speaker in order to express surprise. The study compares Estonian surprise questions with string-identical information-seeking questions elicited by means of context descriptions. The materials comprise 1,008 utterances by 21 speakers.It is concluded that the prosody of the examined utterances has three roles that are relevant to the expression of surprise by ordinary interrogative sentences. First, the enhanced prosodic realisation of the utterances as manifested in a longer duration, a wider pitch range, and a more frequent occurrence of upstepped pitch accents conveys emotional expressivity. Second, lower pitch along with the creaky voice quality signals that the utterances are not canonical questions, while the main prosodic correlate of information-seeking questions is high pitch. Phonological pitch accents and boundary tones, however, are not used to distinguish between surprise questions and information-seeking questions. Third, the nuclear accent placement signals an information structure that is associated with the expression of incongruity or counterexpectation: the focal accent can evoke an alternative (set) that arises from the speaker’s expectations.