Prosodic Changes Research Articles

Semantic prosody, semantic transfer and semantic change

Abstract This article investigates semantic prosody in a diachronic perspective. Although prosodies have been shown to change over time, there is no consensus regarding the source of such changes. The present study explores this further through a corpus study of the development of the lemmas fabric, fabricate and fabrication from the late 15th century to the late 20th century, drawing on material from Early English Books Online, the Corpus of Late Modern English Texts and the British National Corpus. The results of the study show that prosodic changes coincide with the emergence of new senses and indicate that these processes are related to and possibly caused by semantic transfer induced by persistent prosodies over time.

Predictions about prosody facilitate lexical access: Evidence from P50/N100 and MMN components

Research into the neural foundation of perception asserts a model where top-down predictions modulate the bottom-up processing of sensory input. Despite becoming increasingly influential in cognitive neuroscience, the precise account of this predictive coding framework remains debated. In this study, we aim to contribute to this debate by investigating how predictions about prosody facilitate speech perception, and to shed light especially on lexical access influenced by simultaneous predictions in different domains, inter alia, prosodic and semantic. Using a passive auditory oddball paradigm, we examined neural responses to prosodic changes, leading to a semantic change as in Dutch nouns canon [ˈkaːnɔn] ‘canon’ vs kanon [kaːˈnɔn] ‘cannon’, and used acoustically identical pseudowords as controls. Results from twenty-eight native speakers of Dutch (age range 18–32 years) indicated an enhanced P50/N100 complex to prosodic change in pseudowords as well as an MMN response to both words and pseudowords. The enhanced P50/N100 response to pseudowords is claimed to indicate that all relevant auditory information is still processed by the brain, whereas the reduced response to words might reflect the suppression of information that has already been encoded. The MMN response to pseudowords and words, on the other hand, is best justified by the unification of previously established prosodic representations with sensory and semantic input respectively. This pattern of results is in line with the predictive coding framework acting on multiple levels and is of crucial importance to indicate that predictions about linguistic prosodic information are utilized by the brain as early as 50 ms.

Detecting Emotional Prosody in Real Words: Electrophysiological Evidence From a Modified Multifeature Oddball Paradigm.

Emotional voice conveys important social cues that demand listeners' attention and timely processing. This event-related potential study investigated the feasibility of a multifeature oddball paradigm to examine adult listeners' neural responses to detecting emotional prosody changes in nonrepeating naturally spoken words. Thirty-three adult listeners completed the experiment by passively listening to the words in neutral and three alternating emotions while watching a silent movie. Previous research documented preattentive change-detection electrophysiological responses (e.g., mismatch negativity [MMN], P3a) to emotions carried by fixed syllables or words. Given that the MMN and P3a have also been shown to reflect extraction of abstract regularities over repetitive acoustic patterns, this study employed a multifeature oddball paradigm to compare listeners' MMN and P3a to emotional prosody change from neutral to angry, happy, and sad emotions delivered with hundreds of nonrepeating words in a single recording session. Both MMN and P3a were successfully elicited by the emotional prosodic change over the varying linguistic context. Angry prosody elicited the strongest MMN compared with happy and sad prosodies. Happy prosody elicited the strongest P3a in the centro-frontal electrodes, and angry prosody elicited the smallest P3a. The results demonstrated that listeners were able to extract the acoustic patterns for each emotional prosody category over constantly changing spoken words. The findings confirm the feasibility of the multifeature oddball paradigm in investigating emotional speech processing beyond simple acoustic change detection, which may potentially be applied to pediatric and clinical populations.

The dynamic effect of speaking fast on speech prosody

Speaking fast causes several changes in speech prosody. In addition, it can be associated with a decrease in speech intelligibility. In this study, prosodic changes in fast speech were investigated using common prosodic measurements and syllabic prosody index (SPI), a novel prominence measure that combines f0, energy and duration features. Dynamic changes in long-term prosodic prominence were investigated using functional data analysis (FDA), in which the SPI is transformed into a functional form. The possibly decreasing effect of speaking fast on speech intelligibility was evaluated using automatic speech recognition. Phonetic analyses of syllabic units showed that speaking fast decreases duration, f0 and SPI, and increases articulation rate and proportional acoustic energy in the frequency range of 0–1 kHz. FDA supported the aforementioned results by revealing dynamically decreased overall prominence in fast speech. Furthermore, in comparison to regular speech, speech intelligibility was found to be significantly lower in fast speech: word error rate (WER) for regular speech was 0.27, whereas for fast speech it was 0.86.

Perfil linguístico de crianças com transtornos de linguagem e fala e participação da família no processo terapêutico: revisão integrativa de literatura

ABSTRACT Purpose: to investigate the linguistic profile (linguistic symptoms and risk factors) of children with communication, language, and speech disorders and verify their family’s participation in the therapeutic process. Methods: an integrative literature review including studies on linguistic symptoms of children with developmental language disorder (DLD), autism spectrum disorder (ASD), and phonological disorders (PD), published in Portuguese in the last 10 years (2012 to 2022) in the PubMed, SciELO, and VHL databases. Literature Review: 24 studies were included, according to the eligibility criteria, the children having different linguistic symptoms. In PD, there were more phonological processes, slower speech, and difficulties in auditory perception and morphosyntactic and semantic development. In DLD, there were changes in nominal morphology, morphosyntactic comprehension, greater use of intransitive verbs, omission of verb objects, and difficulties in solving conflicts. In ASD, there were difficulties in social interaction, imitation, prosodic changes, and decreased responsiveness. The main risk factor was prematurity, and the family was considered crucial as a support network in the therapeutic process. The family’s attitudes were facilitators or barriers to the patients’ improvement, depending on how they responded to the therapists’ instructions. Conclusion: the linguistic profile depends on the various language/speech disorders. Each child’s singularities must be considered, and the family’s participation is crucial to the therapeutic process.

Development and validation of a machine learning-based vocal predictive model for major depressive disorder

BackgroundVariations in speech intonation are known to be associated with changes in mental state over time. Behavioral vocal analysis is an algorithmic method of determining individuals' behavioral and emotional characteristics from their vocal patterns. It can provide biomarkers for use in psychiatric assessment and monitoring, especially when remote assessment is needed, such as in the COVID-19 pandemic.The objective of this study was to design and validate an effective prototype of automatic speech analysis based on algorithms for classifying the speech features related to MDD using a remote assessment system combining a mobile app for speech recording and central cloud processing for the prosodic vocal patterns. MethodsMachine learning compared the vocal patterns of 40 patients diagnosed with MDD to the patterns of 104 non-clinical participants. The vocal patterns of 40 patients in the acute phase were also compared to 14 of these patients in the remission phase of MDD. ResultsA vocal depression predictive model was successfully generated. The vocal depression scores of MDD patients were significantly higher than the scores of the non-patient participants (p < 0.0001). The vocal depression scores of the MDD patients in the acute phase were significantly higher than in remission (p < 0.02). LimitationsThe main limitation of this study is its relatively small sample size, since machine learning validity improves with big data. ConclusionsThe computerized analysis of prosodic changes may be used to generate biomarkers for the early detection of MDD, remote monitoring, and the evaluation of responses to treatment.

Apragmatism: The renewal of a label for communication disorders associated with right hemisphere brain damage.

Right hemisphere communication disorders are neither consistently labelled nor adequately defined. Labels associated with right hemisphere brain damage (RHD) are broad and fail to capture the essence of communication challenges needed for stroke-related service provisions. Determination of rehabilitation needs and best-practice guidelines for the education, management and functional improvement of communication disorders after RHD are all predicated on an apt diagnostic label and disorder characteristics. In this paper apragmatism is proposed as a potential communication-specific diagnostic label for the impairments in communication that occur after RHD. In particular, the researchers aimed: (1) to establish an operational definition of apragmatism; and (2) to describe the linguistic, paralinguistic and extralinguistic communication deficits under the umbrella term apragmatism. An international collaborative of researchers with expertise in RHD followed a multilevel approach to consider the utility of apragmatism as a diagnostic label. Adopting the relational approach to concept mapping, the researchers engaged in a series of group meetings to complete four levels of mapping: (1) identify and review, (2) define, (3) expert discussion and (4) label determination. Apragmatism was established as a suitable diagnostic label for the impairments in communication associated with RHD. The paper offers an operational definition and description of the linguistic, paralinguistic and extralinguistic features of apragmatism through evidence summaries and examples from people with RHD retrieved from the RHDBank. The adoption of the term apragmatism offers an opportunity to capture the hallmark of RHD communication deficits. The use of the term is recommended when referencing the pragmatic language impairments in this population. Apragmatism, which may co-occur with or be exacerbated by cognitive impairments, can interfere with the ability to interpret and convey intended meaning and impact the lives of right hemisphere stroke survivors and their families. What is already known on the subject RHD results in a heterogeneous group of deficits that range in cognitive-communicative complexity. Many of the deficits are subsumed under pragmatics. For example, adults with RHD may demonstrate tangential or verbose communication, insensitivity to others' needs and feelings, prosodic changes, minimal gesture use and facial expression, and more. While descriptions of pragmatic impairments pervade the literature, there is no consistently used diagnostic label. The clinical consequences of this absence include difficulty with inter- and intra-disciplinary communication about these patients, difficulty consolidating findings across research studies, and challenges in communicating about these pragmatic changes with patients, families and other stakeholders. What this paper adds to existing knowledge The term apragmatism is proposed as a diagnostic label to consistently describe pragmatic communication changes after RHD. Apragmatism is characterized using three components of pragmatics: linguistic, paralinguistic and extralinguistic. Descriptions and examples of these three components are provided with supplemental transcripts retrieved from the RHDBank. What are the potential or actual clinical implications of this work? Adoption of the term apragmatism by speech and language therapists and other medical and rehabilitation professionals has the potential to provide consistency in describing the abilities and challenges experienced by people following a right hemisphere stroke. Such improvements may help drive the development of evidence-based assessments and treatments for this population.

Overt and implicit prosody contribute to neurophysiological responses previously attributed to grammatical processing

Recent neurophysiological research suggests that slow cortical activity tracks hierarchical syntactic structure during online sentence processing. Here we tested an alternative hypothesis: electrophysiological activity peaks at constituent phrase as well as sentence frequencies reflect cortical tracking of overt or covert (implicit) prosodic grouping. Participants listened to series of sentences presented in three conditions while electroencephalography (EEG) was recorded. First, prosodic cues in the sentence materials were neutralized. We found an EEG spectral power peak elicited at a frequency that only ‘tagged’ covert, implicit prosodic change, but not any major syntactic constituents. In the second condition, participants listened to a series of sentences with overt prosodic grouping cues that either aligned or misaligned with the syntactic phrasing in the sentences (initial overt prosody trials). Following each overt prosody trial, participants were presented with a second series of sentences lacking overt prosodic cues (instructed prosody trial) and were instructed to imagine the prosodic contour present in the previous, overt prosody trial. The EEG responses reflected an interactive relationship between syntactic processing and prosodic tracking at the frequencies of syntactic constituents (sentences and phrases): alignment of syntax and prosody boosted EEG responses, whereas their misalignment had an opposite effect. This was true for both overt and imagined prosody conditions. We conclude that processing of both overt and covert prosody is reflected in the frequency-tagged neural responses at sentence constituent frequencies. These findings need to be incorporated in any account that aims to identify neural markers reflecting syntactic processing.

The case of question-based exclamatives: From pragmatic rhetorical function to semantic meaning

Abstract In this paper, I analyze the cyclic linguistic evolution of questions via Bardenstein’s ‘persistence principle’ (Bardenstein, Ruti. 2020b. Persistent argumentative discourse markers. The case of Hebrew rectification-marker be-ʕecem (‘actually’). Journal of Pragmatics 172. 254–269) and argue that questions become “polysemous” via a core function. I show that it is the question’s initial rhetorically-recruited function that motivates its semantic change (alongside grammatical and prosodic changes) and it is that function that also persists throughout its history. I focus my analysis on question-based exclamatives whose peresistent function is the speaker’s strong stance and show that this function persists even when the question-based exclamative cyclically evolves into an adverbial NPI (Negative Polarity Item).

Cortical activity evoked by voice pitch changes: A combined fNIRS and EEG study

Functional near-infrared spectroscopy (fNIRS) and electroencephalography (EEG) data were simultaneously obtained from normal-hearing listeners presented with continuous natural vowel sequences to study the interrelation of the haemodynamic and electrophysiological cortical responses evoked by voice pitch changes. fNIRS topographies and distributed ERP source reconstructions both indicated additional activity in the right superior temporal cortex if the prosodic contours varied between successive vowels, rather than being the same throughout the sequences. The source-level ERPs furthermore revealed two temporally and spatially separable adaptation processes in superior temporal cortex: Firstly, the early P1 component was bilaterally attenuated when vowels with the same prosodic contours were presented repeatedly, reflecting sensory adaptation. Secondly, the later P2 and sustained potential components were smaller in the right hemisphere during sequences without prosodic changes, which is taken to represent an attention-based adaptation effect. The present results demonstrate the convergence of both methods and demonstrate which ERPs underlie the right-lateralised activity in superior temporal cortex evoked in response to pitch changes that has been observed in many neuroimaging studies.

Single Word Intelligibility of Individuals with Parkinson's Disease in Noise: Pre-Specified Secondary Outcome Variables from a Randomized Control Trial (RCT) Comparing Two Intensive Speech Treatments (LSVT LOUD vs. LSVT ARTIC).

The majority of people with Parkinson’s disease (PD) experience both prosodic changes (reduced vocal volume, reduced pitch range) and articulatory changes (imprecise articulation) that often limit speech intelligibility and may contribute to significant declines in quality of life. We conducted a randomized control trial comparing two intensive treatments, voice (LSVT LOUD) or articulation (LSVT ARTIC) to assess single word intelligibility in the presence of background noise (babble and mall). Participants (64 PD and 20 Healthy) read words from the diagnostic rhyme test (DRT), an ANSI Standard for measuring intelligibility of speech, before and after one month (treatment or no treatment). Teams of trained listeners blindly rated the data. Speech intelligibility of words in the presence of both noise conditions improved in PD participants who had LSVT LOUD compared to the groups that had LSVT ARTIC or no treatment. Intensive speech treatment targeting prominent prosodic variables in LSVT LOUD had a positive effect on speech intelligibility at the single word level in PD.

Acoustic measures in natural speech of progressive supranuclear palsy and corticobasal spectrum disorders

AbstractBackgroundProgressive supranuclear palsy and corticobasal syndrome (PSP‐CBS) are neurodegenerative disorders involving motor and cognitive deficits. These patients may have slowed and dysfluent speech. However, few studies have investigated specific speech and language deficits in these disorders, although some patients may have non‐fluent/agrammatic primary progressive aphasia (naPPA). In our study, we used novel, automated speech analysis methods to quantify acoustic properties of natural speech in PSP‐CBS. We hypothesized patients would exhibit slowed speech and longer pauses, and predicted that prosodic changes would be related to underlying cognitive and motor impairments. Because PSP and CBS are tauopathies, we related their acoustic performance to cerebrospinal fluid (CSF) analytes associated with Tau pathology.MethodWe obtained digitized samples of natural speech with the Cookie Theft picture description task from PSP‐CBS patients (n = 95), naPPA patients (n = 25) and healthy controls (HC, n = 41). Eight PSP‐CBS patients had concomitant naPPA (PSP‐CBS+naPPA). The groups were matched for age, sex, education, and disease duration. A speech activity detector program automatically segmented the acoustic signal into speech and silent pause segments. We automatically calculated the pitch range by measuring fundamental frequency (f0, semitones), total speech duration, mean speech and pause segment durations, and pause rate (pauses per minute). In a subset of patients with available CSF analytes, we related acoustic markers with levels of phosphorylated tau (pTau).ResultPSP‐CBS without naPPA had shorter mean speech segments (1.42 ± 0.48 sec), shorter total speech durations (31.77 ± 14.66 sec), longer mean pause segments (1.82 ± 1.01 sec) and higher pause rates (45.10 ± 13.43 pauses per minute) compared to HC (2.00 ± 0.57 sec, p &lt; .001; 51.08 ± 21.30 sec, p &lt; .001; 0.93 ± 0.44 sec, p &lt; .001; 31.61 ± 9.51 ppm, p &lt; .001, respectively). PSP‐CBS only differed from naPPA for pause rate (PSP‐CBS, 45.10 ± 13.43 ppm; naPPA, 57.81 ± 19.95 ppm; p = .026). PSP‐CBS+naPPA patients were most impaired for f0 range (3.56 ± 1.21 ST) compared to HC (5.87 ± 1.94 ST, p = .021), paralleling naPPA patients, who had reduced f0 range compared to HC (4.30 ± 1.59 ST, p = .02). f0 range was associated with pTau levels in all patients (r = ‐0.43, p = .004).ConclusionPatients with PSP‐CBS have impaired speech as quantified by automated analysis of acoustic measures of speech. These measures are related to pTau, a marker of likely pathology.

Markers for the central serotonin system correlate to verbal ability and paralinguistic social voice processing in autism spectrum disorder

Impairment in verbal communication abilities has been reported in autism spectrum disorder (ASD). Dysfunction of the serotonergic system has also been reported in ASD. However, it is still unknown how the brain serotonergic system relates to impairment in verbal communication abilities in individuals with ASD. In the present study, we investigated the correlation between brain serotonergic condition and brain sensitivity to paralinguistic stimuli (i.e., amplitude in the human voice prosodic change-evoked mismatch field) measured by magnetoencephalography (MEG) or verbal ability in 10 adults with ASD. To estimate the brain serotonergic condition, we measured the serotonin transporter nondisplaceable binding potential cerebrum-wide using positron emission tomography with [11C]N,N-dimethyl-2-(2-amino-4-cyanophenylthio)benzylamine ([11C] DASB). The results demonstrated a significant positive correlation between brain activity to paralinguistic stimuli and brain serotonin transporter binding potential in the left lingual gyrus, left fusiform gyrus and left calcarine cortex. In addition, there were significant positive correlations between verbal ability and serotonergic condition in the right anterior insula, right putamen and right central operculum. These results suggested that the occipital cortex is implicated in recognition of the prosodic change in ASD, whereas the right insula-involved serotonergic system is important in nurturing verbal function in ASD.Trial registration: UMIN000011077.

Syllable structure and prosodic words in Early Old French

This paper presents a comprehensive analysis of the phonotactics of syllable rhymes based on all unique tokens in two Early Old French texts. Based on the data from this single, conservative variety, I develop Jacobs’ (1994) proposal that the Old French stress rule is underlyingly trochaic and that word-fiinal stress is caused by the presence of an empty-headed final syllable. I argue that this analysis can only be valid while words with final stress systematically end in a consonant that can, and often must, be parsed as the onset to an empty-headed syllable. Although this is not the case in most later varieties of Old French, the prediction is borne out by our data. I conclude by examining the implications of this analysis for the accentuation and phonotactics of monosyllables and for the study of prosodic change in Old French.

Affective Prosody Perception and the Relation to Social Competence in Autistic and Typically DevelopingChildren.

Individuals diagnosed with autism spectrum disorder (ASD) have difficulty perceiving and expressing emotions. Since prosodic changes in speech (i.e. changes in intonation, stress, rhythm, etc.) are crucial for extracting information about the emotional state of a speaker, an inability to perceive and interpret these prosodic changes may be related to impairments in social communication. This study used non-verbal emotional voice-clips to examine the ability of autistic and typically-developingchildren (7-13years old) to extract affect from changes in prosody. This research also explored whether difficulty extracting affective intent from changes in prosody may be related to social competence. Autistic (n= 26) and typically-developing (n = 26) childrenaccurately matched emotional voice-clips to emotion words, suggesting autistic children can accurately extract the affective meaning conveyed by changes in prosody. Autistic children were less accurate at matching the voice-clips to emotional faces, suggesting that autistic children may struggle to make use of prosodic information in a social context. Across both autistic and typically-developingchildren, prosody-face matching accuracy was found to predict overall social competence, as well as social inferencing abilities, suggesting that the inability to utilize affective information derived from a speaker's voice may interfere with effective social communication.

Brain correlates of emotional prosodic change detection in autism spectrum disorder

Autism Spectrum Disorder (ASD) is currently diagnosed by the joint presence of social impairments and restrictive, repetitive patterns of behaviors. While the co-occurrence of these two categories of symptoms is at the core of the pathology, most studies investigated only one dimension to understand underlying physiopathology. In this study, we analyzed brain hemodynamic responses in neurotypical adults (CTRL) and adults with autism spectrum disorder during an oddball paradigm allowing to explore brain responses to vocal changes with different levels of saliency (deviancy or novelty) and different emotional content (neutral, angry).Change detection relies on activation of the supratemporal gyrus and insula and on deactivation of the lingual area. The activity of these brain areas involved in the processing of deviancy with vocal stimuli was modulated by saliency and emotion. No group difference between CTRL and ASD was reported for vocal stimuli processing or for deviancy/novelty processing, regardless of emotional content.Findings highlight that brain processing of voices and of neutral/ emotional vocal changes is typical in adults with ASD. Yet, at the behavioral level, persons with ASD still experience difficulties with those cues. This might indicate impairments at latter processing stages or simply show that alterations present in childhood might have repercussions at adult age.

Prosodic change and the (apparent) irregularities in the development of segments

AbstractAccording to the so-called Prosodic Change Hypothesis, sound change may be irregular if it is caused by a change in prosodic features of units to which the relevant segments belong. This theoretically not implausible hypothesis may provide an explanation for the well-known fact that some instances of sound change display what appears to be unexplainable exceptions. The present paper investigates the question of what kind of data can be used to verify the Prosodic Change Hypothesis. The paper establishes criteria which should be applied to potential evidence and demonstrates that, at present, the Prosodic Change Hypothesis has not yet been confirmed by reference to actual instances of sound change.

Intersensory redundancy promotes infant detection of prosody in infant-directed speech

Prosody, or the intonation contours of speech, conveys emotion and intention to the listener and provides infants with an early basis for detecting meaning in speech. Infant-directed speech (IDS) is characterized by exaggerated prosody, slower tempo, and elongated pauses, all amodal properties detectable across the face and voice. Although speech is an audiovisual event, it has been studied primarily as a unimodal auditory stream without the synchronized dynamic face of the speaker. According to the intersensory redundancy hypothesis, redundancy across the senses facilitates perceptual learning of amodal information, including prosody. We predicted that young infants who are still learning to discriminate and categorize prosodic information would detect prosodic changes better in the presence of intersensory redundancy (i.e., synchronous audiovisual speech) than in its absence (i.e., unimodal auditory or asynchronous audiovisual speech). To test this hypothesis, 72 4-month-old infants were habituated to recordings of women reciting passages in IDS with prosody conveying either approval or prohibition and then were tested with recordings of a novel passage with either a change or no change in prosody. Infants who received bimodal synchronous stimulation exhibited significant visual recovery to the novel passage with a change in prosody, but not to a novel passage with no change in prosody. Infants in the unimodal auditory and bimodal asynchronous conditions did not exhibit visual recovery in either condition. Results support the hypothesis that intersensory redundancy facilitates detection and abstraction of invariant prosody across changes in linguistic content and likely serves as an early foundation for the detection of meaning in fluent speech.

Using Pitch and Length Information to Assess Speech Prosody: a Parallel Approach

Recent studies on pronunciation instruction underscore the effectiveness of using pitch variation contours to enhance language learners’ awareness of English intonation. Little is known of the situation in language production: Do learners adjust their pitch levels or lengthen or shorten a sound in order to vary their prosody? The current study posits that both pitch and length variations are involved in encoding speech prosody; it purports to quantify their relative importance by using Hincks’s (2005) Pitch Variation Quotient (PVQ) and a self-created length variation quotient (LVQ). The methods section introduces four quantitative methods, using data from the participants’ verbal speech as well as the training material (a song) to compare pitch and length behaviours. Results from three of the four methods support that the learners, after undergoing a period of training (a singing class), improved their length variation but not their pitch variation over a reading task. The fourth method (a mixed between-within ANOVA) also confirms the learners’ general prosodic improvement, but the test raises curious points about the complex relationship between pitch and length that are worth further consideration by pronunciation assessors. Overall, this study provides initial evidence of the importance of length variation for assessing prosodic change.

Language contact and prosodic change in Slavic and Baltic

AbstractThis paper discusses several Slavic and Baltic dialects which have undergone stress shifts as a result of language contact. Two types of change are discussed: (1) stress retractions from the final syllable onto the initial syllable of a prosodic word, and (2) the rise of fixed stress replacing earlier free stress. It is argued that in all cases discussed in the paper, contact with a language with fixed initial stress caused a stress shift. Examples from Croatian and Lithuanian demonstrate that pitch contours played an important role in these shifts. The results of the shifts are not always identical, but the underlying mechanism is the same in each of these cases: the lexical pitch contour of the donor language was imposed on the target language, thereby introducing constraints on the position of stress in the target language. It is argued that a similar mechanism operated in West Slavic, where languages with free stress introduced fixed stress on the initial or penultimate syllable due to contact with German and possibly Hungarian.