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Academic literature on the topic 'Vocalisations'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 May 2024

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Journal articles on the topic "Vocalisations"

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Webster, Patrick, Nicholas Leseberg, Stephen Murphy, and James Watson. "Descriptions of the vocalisations of the Painted Button-quail Turnix varius in North Queensland." Australian Field Ornithology 40 (2023): 111–19. http://dx.doi.org/10.20938/afo40111119.

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The Painted Button-quail Turnix varius is a widespread and frequently encountered ground-dwelling bird endemic to Australia. Despite being regularly recorded throughout its distribution, our understanding of this species’ vocalisations is poor. Published accounts are limited to brief descriptions without quantitative analyses in a standardised format. This presents challenges in separating the vocalisations of this species from other similar species, particularly as vocalising button-quail are seldom observed. We recorded the vocalisations of Painted Button-quail from North Queensland. These vocalisations were identified as advertising ooms, drumming and contact calls. These vocalisation types appear analogous to those described for other button-quail species, though some key differences particularly in the advertising oom will likely prove diagnostic. Here we present descriptions and visual representations of each of these vocalisation types.
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Stafford, Kathleen M., Sharon L. Nieukirk, and Christopher G. Cox. "Geographic and seasonal variation of blue whale calls in the North Pacific." J. Cetacean Res. Manage. 3, no. 1 (May 25, 2023): 65–76. http://dx.doi.org/10.47536/jcrm.v3i1.902.

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The call characteristics and distribution of blue whales in the North Pacific were examined by use of acoustic surveys. Two distinct vocalisation types have been previously attributed to blue whales from limited regions in the North Pacific (cf. Thompson and Friedl, 1982; Rivers, 1997). Hydrophone data from sixteen sites in the North Pacific were examined for these blue whale vocalisations. There were distinct geographic and seasonal differences between the occurrence of the two vocalisation types. The hydrophones that were more westerly recorded the ‘northwestern’ Pacific vocalisation, those in the eastern Pacific recorded the ‘northeastern’ Pacific vocalisation and those in the central Pacific recorded both types. Northeastern vocalisations were recorded from July-December in the northeast Pacific and February-May in the eastern tropical Pacific. Northwestern vocalisations were recorded most often from July-December, and were essentially absent from March-May in the northwestern Pacific. These results suggest that the different vocalisation types may represent at least two distinct groups of blue whales in the North Pacific.
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Corkeron, Peter J., and Sofie M. Van Parijs. "Vocalizations of eastern Australian Risso's dolphins, Grampus griseus." Canadian Journal of Zoology 79, no. 1 (January 1, 2001): 160–64. http://dx.doi.org/10.1139/z00-180.

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Recordings were made from a group of Risso's dolphins (Grampus griseus) off the coast of Newcastle, Australia, between 30 Hz and 22 kHz. Risso's dolphins exhibited seven separate vocalisation types: broadband clicks, barks, buzzes, grunts, chirps, whistles, and simultaneous whistle + burst-pulse sounds. Broadband clicks were highly variable in duration, with a frequency range of 6 to >22 kHz. Bark vocalisations consisted of highly variable burst pulses, with durations ranging from 0.2 to 7.4 s and a frequency range of 2-20 kHz. Buzz vocalisations were clearly stereotyped, consisting of a short burst pulse of around 2 s and a frequency range of 2.1 to >22 kHz. Low frequency narrowband grunt vocalisations (0.4–0.8 kHz) were short in duration. Chirp vocalisations were slightly higher in frequency than the grunt vocalisations, ranging in frequency from 2 to 4 kHz. There were at least five different whistle types, ranging in frequency from 4 to 22 kHz. We recorded a combined tonal and burst-pulse vocalisation. The rising whistles ranged from 6 to 18 kHz, while the burst-pulse sounds ranged between 3 and 21 kHz. This combined whistle + burst pulse sound appears to be unique to Risso's dolphins.
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Torquet, Nicolas, Fabrice de Chaumont, Philippe Faure, Thomas Bourgeron, and Elodie Ey. "mouseTube – a database to collaboratively unravel mouse ultrasonic communication." F1000Research 5 (September 16, 2016): 2332. http://dx.doi.org/10.12688/f1000research.9439.1.

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Ultrasonic vocalisation is a broadly used proxy to evaluate social communication in mouse models of neuropsychiatric disorders. The efficacy and robustness of testing these models suffer from limited knowledge of the structure and functions of these vocalisations as well as of the way to analyse the data. We created mouseTube, an open database with a web interface, to facilitate sharing and comparison of ultrasonic vocalisations data and metadata attached to a recording file. Metadata describe 1) the acquisition procedure, e.g., hardware, software, sampling frequency, bit depth; 2) the biological protocol used to elicit ultrasonic vocalisations; 3) the characteristics of the individual emitting ultrasonic vocalisations (e.g., strain, sex, age). To promote open science and enable reproducibility, data are made freely available. The website provides searching functions to facilitate the retrieval of recording files of interest. It is designed to enable comparisons of ultrasonic vocalisation emission between strains, protocols or laboratories, as well as to test different analysis algorithms and to search for protocols established to elicit mouse ultrasonic vocalisations. Over the long term, users will be able to download and compare different analysis results for each data file. Such application will boost the knowledge on mouse ultrasonic communication and stimulate sharing and comparison of automatic analysis methods to refine phenotyping techniques in mouse models of neuropsychiatric disorders.
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von Borell, E., B. Bünger, T. Schmidt, and T. Horn. "Vocal-type classification as a tool to identify stress in piglets under on-farm conditions." Animal Welfare 18, no. 4 (November 2009): 407–16. http://dx.doi.org/10.1017/s0962728600000816.

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AbstractPrevious studies have shown that the analysis of high frequency stress calls in pigs can serve as a reliable tool in welfare research. Our study focuses on the classification of three different classes of piglet vocalisation: grunting, squealing and screaming. In a castration experiment (Experiment 1), 3,285 vocalisations from 42 piglets were analysed for 21 different vocal characteristics. A first discriminant function for the three vocal types was derived from recordings made under laboratory-like conditions. A second discriminant function was derived from non-calibrated measurements of the relative sound energy content. These two classifications revealed 86.7% identical assignments of vocalisations to the three vocal types. The second classification allowed for vocalisation analyses of animals under on-farm recording conditions. This technique was validated during an open-field test (Experiment 2) with piglets housed in two different farrowing systems (11,089 vocalisations, 22 piglets). The proportion of screaming sounds was lower for piglets from a group-farrowing (GF) system than for those from a single-farrowing (SF) system. Sound properties showed differences between as well as within the two experiments for all three vocal types. Vocalisations from SF and GF piglets differed significantly in the duration, energy, and relative maximum levels. We conclude that vocal-type analysis can not only help to identify vocalisation indicative of pain during castration, but also vocal behaviour changes indicating separation stress during the open-field test. Therefore, classification of vocal types can add valuable information to studies that use pig vocalisation for the assessment of welfare.
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Orihuela, A., and R. Ungerfeld. "Acoustic characteristics of vocalisations emitted by the domestic rabbit (Oryctolagus cuniculus) during copula ejaculation and electro-ejaculation with or without anaesthesia." World Rabbit Science 27, no. 3 (September 30, 2019): 157. http://dx.doi.org/10.4995/wrs.2019.10809.

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Vocalisations can be used as reliable indicators of pain, but little information is available in rabbits, where acoustic tools for farming environments can be used for welfare judgements. The aim of this study was to compare vocalisations produced during copula ejaculation and electro-ejaculation (EE), with or without general anaesthesia, in domestic rabbits. Vocalisations of nine New Zealand white adult males were digitally recorded. The number of males vocalising and vocal characteristics including high, low, maximum and fundamental frequencies and duration of the vocalisations were analysed. There were no differences in the number of males vocalising or any vocalisation parameter between the 1<sup>st</sup> and 2<sup>nd</sup> ejaculation while copulating, even though the fundamental frequency increased in all males in the 2<sup>nd</sup> ejaculation (<em>P</em>=0.008). More males vocalised while mating than while being electro-ejaculated (<em>P</em>=0.03), and all vocalisation parameters were greater during EE than while mating (<em>P</em>=0.004). The use or not of anaesthesia during EE did not modify any of the parameters evaluated. It was concluded that: 1) more males vocalised during copula ejaculation than while being electro-ejaculated; 2) bio-acoustic analysis allowed us to identify aversive utterance vocalisations, which are characterised with higher frequencies, that those from non-aversive stimulus; and 3) at least with the anaesthetic combination and the responses studied, anaesthesia had no effect on the acoustic characteristics of the vocalisation emitted during EE in rabbits.
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Rankin, Shannon, Don Ljungblad, Chris Clark, and Hidehiro Kato. "Vocalisations of Antarctic blue whales, Balaenoptera musculus intermedia, recorded during the 2001/2002 and 2002/2003 IWC/SOWER circumpolar cruises, Area V, Antarctica." J. Cetacean Res. Manage. 7, no. 1 (March 15, 2023): 13–20. http://dx.doi.org/10.47536/jcrm.v7i1.752.

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Blue whale vocalisations recorded during the 2001/2002 and 2002/2003 International Whaling Commission-Southern Ocean Whale and Ecosystem Research (IWC/SOWER) cruises were analysed to determine the feasibility of using acoustic recordings for sub-species identification of the Antarctic blue whale (Balaenoptera musculus intermedia) and the pygmy blue whale (B.m. brevicauda). The research was conducted in IWC Area V, from latitude 60°S to the ice edge and between longitudes 130°E and 150°E on the Shonan Maru (2001/2002), and between 150°E and 170°W on the Shonan Maru No.2 (2002/2003). Data including 15 groups consisting of 42 animals, as well as opportunistic recordings of an unknown number of animals during evening sonobuoy stations were examined for this study. Vocalisations included long-duration 28Hz tonal sounds and relatively short-duration frequency-modulated sounds. The short-duration calls were similar to vocalisations recorded in the presence of blue whales in other locations worldwide. Not all recordings contained the longduration 28Hz call, considered to be a species-specific vocalisation of Antarctic blue whales. None of the sounds that have previously been attributed to pygmy blue whales were detected. The long-duration 28Hz tonal vocalisations included 3-unit calls, considered to be song phrases, as well as simple 28Hz sounds and 28Hz sounds followed by a downsweep. The centre and peak frequencies of the 28Hz tone for these three sound types were stable regardless of signal strength; however, for the 3-unit vocalisation, the presence and characteristics of their 2nd and 3rd units were variable. Examination of two distinct groups of simultaneously vocalising blue whales showed no evidence of temporally repeated patterns of vocalisations (song phrases). The results of this study suggest that the peak frequency of the 28Hz vocalisations may be used as a diagnostic feature to aid in discriminating between Antarctic blue whales and pygmy blue whales in the field; however, examination of vocalisations in relation to group size and behaviour are necessary to understand the circumstances in which the 28Hz vocalisations are produced.
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Webster, Patrick, Nigel Jackett, George Swann, Nicholas Leseberg, Stephen Murphy, and James Watson. "Descriptions of the vocalisations of the Chestnut-backed Button-quail Turnix castanotus." Australian Field Ornithology 38 (2021): 137–44. http://dx.doi.org/10.20938/afo38137144.

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Button-quail (Turnicidae) are a greatly understudied family of birds; their cryptic habits make studying them in the wild challenging. They are known to be quite vocal which could assist with detectability, and so it follows that survey results will be more reliable as knowledge about button-quail vocal repertoire increases. Until recently, there were no published vocal recordings of the Chestnut-backed Button-quail Turnix castanotus, and descriptions and accounts of this species’ vocalisations were limited. We recorded vocalisations of Chestnut-backed Button-quail at six locations across the Northern Territory and Western Australia. Three broad vocalisation types were identified: advertising ooms, drumming, and contact calls. We present descriptions and visual representations of these vocalisations, and draw comparisons with previously published accounts of this species, and other Australian button-quail.
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Azhari, Atiqah, Paola Rigo, Marc H. Bornstein, and Gianluca Esposito. "Where Sounds Occur Matters: Context Effects Influence Processing of Salient Vocalisations." Brain Sciences 10, no. 7 (July 6, 2020): 429. http://dx.doi.org/10.3390/brainsci10070429.

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The social context in which a salient human vocalisation is heard shapes the affective information it conveys. However, few studies have investigated how visual contextual cues lead to differential processing of such vocalisations. The prefrontal cortex (PFC) is implicated in processing of contextual information and evaluation of saliency of vocalisations. Using functional Near-Infrared Spectroscopy (fNIRS), we investigated PFC responses of young adults (N = 18) to emotive infant and adult vocalisations while they passively viewed the scenes of two categories of environmental contexts: a domestic environment (DE) and an outdoors environment (OE). Compared to a home setting (DE) which is associated with a fixed mental representation (e.g., expect seeing a living room in a typical house), the outdoor setting (OE) is more variable and less predictable, thus might demand greater processing effort. From our previous study in Azhari et al. (2018) that employed the same experimental paradigm, the OE context was found to elicit greater physiological arousal compared to the DE context. Similarly, we hypothesised that greater PFC activation will be observed when salient vocalisations are paired with the OE compared to the DE condition. Our finding supported this hypothesis: the left rostrolateral PFC, an area of the brain that facilitates relational integration, exhibited greater activation in the OE than DE condition which suggests that greater cognitive resources are required to process outdoor situational information together with salient vocalisations. The result from this study bears relevance in deepening our understanding of how contextual information differentially modulates the processing of salient vocalisations.
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Du, Xiaodong, Lenn Carpentier, Guanghui Teng, Mulin Liu, Chaoyuan Wang, and Tomas Norton. "Assessment of Laying Hens’ Thermal Comfort Using Sound Technology." Sensors 20, no. 2 (January 14, 2020): 473. http://dx.doi.org/10.3390/s20020473.

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Heat stress is one of the most important environmental stressors facing poultry production and welfare worldwide. The detrimental effects of heat stress on poultry range from reduced growth and egg production to impaired health. Animal vocalisations are associated with different animal responses and can be used as useful indicators of the state of animal welfare. It is already known that specific chicken vocalisations such as alarm, squawk, and gakel calls are correlated with stressful events, and therefore, could be used as stress indicators in poultry monitoring systems. In this study, we focused on developing a hen vocalisation detection method based on machine learning to assess their thermal comfort condition. For extraction of the vocalisations, nine source-filter theory related temporal and spectral features were chosen, and a support vector machine (SVM) based classifier was developed. As a result, the classification performance of the optimal SVM model was 95.1 ± 4.3% (the sensitivity parameter) and 97.6 ± 1.9% (the precision parameter). Based on the developed algorithm, the study illustrated that a significant correlation existed between specific vocalisations (alarm and squawk call) and thermal comfort indices (temperature-humidity index, THI) (alarm-THI, R = −0.414, P = 0.01; squawk-THI, R = 0.594, P = 0.01). This work represents the first step towards the further development of technology to monitor flock vocalisations with the intent of providing producers an additional tool to help them actively manage the welfare of their flock.
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Dissertations / Theses on the topic "Vocalisations"

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Taylor-Raebel, Gary. "Vocalisations evidence from Germanic." Thesis, University of Essex, 2017. http://repository.essex.ac.uk/19698/.

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A vocalisation may be described as a historical linguistic change where a sound which is formerly consonantal within a language becomes pronounced as a vowel. Although vocalisations have occurred sporadically in many languages they are particularly prevalent in the history of Germanic languages and have affected sounds from all places of articulation. This study will address two main questions. The first is why vocalisations happen so regularly in Germanic languages in comparison with other language families. The second is what exactly happens in the vocalisation process. For the first question there will be a discussion of the concept of ‘drift’ where related languages undergo similar changes independently and this will therefore describe the features of the earliest Germanic languages which have been the basis for later changes. The second question will include a comprehensive presentation of vocalisations which have occurred in Germanic languages with a description of underlying features in each of the sounds which have vocalised. When considering phonological changes a degree of phonetic information must necessarily be included which may be irrelevant synchronically, but forms the basis of the change diachronically. A phonological representation of vocalisations must therefore address how best to display the phonological information whilst allowing for the inclusion of relevant diachronic phonetic information. Vocalisations involve a small articulatory change, but using a model which describes vowels and consonants with separate terminology would conceal the subtleness of change in a vocalisation. The model presented here has therefore been designed to unite the descriptions of consonants and vowels to better demonstrate this change whilst allowing for relevant phonetic information to be included.
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Raine, Jordan. "The nature and function of human nonverbal vocalisations." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/76663/.

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Though human nonverbal vocalisations are widespread, scientific consideration of their mechanisms and communicative functions has been largely overlooked. This is despite their close alignment with the vocal communicative systems of primates and other mammals, whose primary function is to signal indexical information relevant to sexual and natural selection processes. In this thesis, I examine human nonverbal vocalisations from an evolutionary perspective, with the central hypothesis that they are functionally and structurally homologous to nonhuman mammal calls, communicating evolutionarily relevant indexical information that is perceived and utilised by listeners. In Chapter 1, I introduce the methodological framework (source-filter theory) necessary to understand the production of vocal signals in mammals, before summarising the information contained within the acoustic structure of nonhuman mammals and human speech, and the effects these cues have on both vocaliser and listener. I then examine the current evidence for functional and structural homology between human and nonhuman nonverbal vocalisations. In Chapters 2 to 5, I quantitatively analyse the acoustic structure of a number of nonverbal vocalisations, and perform playback experiments to examine their functional effects on listeners. In Chapters 2 and 3, I investigate whether aggressive roars and distress screams communicate acoustic cues to absolute and relative strength and height. In Chapter 4, I analyse the acoustic structure of pain cries of varying intensity, and conduct playback experiments to explore the acoustic and perceptual correlates of pain. In Chapter 5, I examine whether the fundamental frequency of tennis grunts produced during professional tennis matches is dependent on the sex and body posture of the vocaliser, as well as the progress and outcome of the contest, and whether listeners can infer these cues. In Chapter 6, I tie these findings together, arguing that the acoustic structure of human nonverbal vocalisations, in continuity with nonhuman mammal vocalisations, has been selected to support the functional communication of indexical and motivational information.
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Young, Katherine S. "Adults' responses to infant vocalisations : a neurobehavioural investigation." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:6f91f1ae-0948-4b34-b45f-ee65ae421934.

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Infant vocalisations are uniquely salient sounds in the environment. They universally attract attention and compel the listener to respond with speed and care. They provide a wealth of information to parents about their infant’s needs and affective state. There is a scientific consensus that early parenting has a profound impact on child development. In particular, the sensitivity with which parents respond to their infant’s communicative cues has been shown to affect cognitive and socio-emotional outcomes. The mechanisms underlying such sensitivity are not well understood. In this thesis, adults’ sensitivity to infant cues will be considered in terms of two components, the ‘promptness’ and ‘appropriateness’ of responses, as originally conceptualised by Bell and Ainsworth (1972). Promptness of responses is considered in terms of adults’ ability to move with speed and effort after listening to infant vocalisations. Appropriateness, on the other hand, is considered in terms of adults’ ability to differentiate between functionally significant parameters in infant vocalisations. The effect of modifiable environmental factors on the promptness and appropriateness of responses is also investigated. Finally, a focused investigation of the brain basis of responses to infant vocalisations is presented. Overall, findings demonstrated that infant vocalisations undergo privileged, specialised processing in the adult brain. After hearing an infant cry, adults with and without depression were found to move with greater coordination and effort. Adults were also found to be attuned to subtle parameters in infant cries. This sensitivity was shown to be affected by two participant-level factors, depression and previous musical training. Furthermore, this sensitivity could be enhanced through intervention, as evidenced by findings from short-term, perceptual discrimination training. The notion of privileged processing of infant vocalisations is further supported by evidence of early discrimination of infant sounds in a survival-related subcortical brain structure. Future directions for this work include directly relating current experimental measures of adults’ responses to infant cues with parental sensitivity to infant communication during dynamic interactions. Translating current findings into applied settings would require an investigation of the effects of factors such as musical and perceptual training on sensitivity to infant cues in at-risk populations, such as mothers and fathers with depression. Lastly, an increased understanding of the brain basis of adults’ sensitivity to infant cues will provide insight into our greatest challenge: parenting our young.
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Perez, Emilie. "Communicating about stress : modulation of vocalisations in the zebra finch." Thesis, Saint-Etienne, 2013. http://www.theses.fr/2013STET4026/document.

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Chez les espèces sociales, les vocalisations transmettent des informations qui participent au maintien et à la survie du groupe. Alors que de nombreuses études se sont intéressées aux informations stables portées par les vocalisations telles que l’identité, peu d’études se sont interrogées sur le rôle des signaux vocaux dans la transmission des informations plus labiles, telles que l’état émotionnel de l’émetteur. Le stress est un bon candidat pour l’étude de l’expression des émotions chez les animaux, puisqu’il est directement mesurable via un dosage de la concentration plasmatique en glucocorticoïdes. Le stress est connu pour modifier les paramètres acoustiques des vocalisations chez les mammifères, mais peu d’études ont traité ce processus chez les oiseaux, qui présentent pourtant des réseaux sociaux complexes. Le but de cette thèse est de déterminer de quelle manière les oiseaux expriment vocalement leur stress, et d’évaluer dans quelle mesure la corticostérone, hormone de stress principale chez l’oiseau, est impliquée dans le phénomène. Je me suis intéressée au Diamant mandarin (Taenopygia guttata), un oiseau chanteur australien au comportement grégaire qui forme des liens d’appariements à vie et prodigue des soins biparentaux à sa progéniture. En administrant de la corticostérone exogène à des oiseaux et en utilisant également des évènements sociaux stressants, nous montrons que les mâles adultes et les poussins expriment leur stress à travers l’émission de cris modifiés dans leur structure, ce qui suggère que la flexibilité des cris chez les oiseaux est plus importante que l’avaient montré des études précédentes. Par une analyse complète des paramètres temporels et spectraux des cris, nous montrons pour la première fois que le stress, par un effet direct de la corticostérone, déclenche l’émission de vocalisations présentant un spectre de fréquence déplacé vers les hautes fréquences. De plus, les receveurs du signal (respectivement les partenaires femelles et les parents) semblent capables de décoder l’information portée par ces cris de stress car ils modifient leur comportement en conséquence. Les processus physiques impliqués dans l’émission de cris modulés par le stress sont également discutés en appliquant la théorie « source-filtre » généralement utilisée chez les mammifères. Enfin, les valeurs adaptatives de ces cris sont également envisagées, en rapport avec le réseau social du Diamant mandarin et les risques de prédation encourus par l’émetteur du signal. Ce travail apporte de nouvelles preuves sur l’expression du stress chez les oiseaux, et propose une étude complète, des signaux physiologiques impliqués dans le stress aux modifications de comportement de l’émetteur, qui déclenchent une réponse adaptative des receveurs du signal
In social species, vocalisations convey information that participates in the maintenance and the survival of the group. While many studies were interested in stable information carried by vocal signals, like identity, fewer studies dealt with their potential role in informing about labile information such as the senders’ emotional state. Stress is a good candidate for the study of the expression of emotions in animals, as it is directly measurable by the plasma levels of glucocorticoïds. Stress is known to modify acoustic parameters of vocalisations in mammals, but few studies studied the process in birds, that also show complex social networks. The aim of this thesis is thus to determine how birds can vocally express their stress and to what extent corticosterone, the main stress hormone in birds, is implicated in this expression. I focused my research on the zebra finch (Taenopygia guttata), a gregarious Australian songbird that form lifelong pairbond and provides biparental care to its young. Using oral administration of exogenous corticosterone but also social stressful events, we show that both adult males and nestlings can express their stress through modulations of their calls’ structure, suggesting that flexibility in birds’ vocalisations is higher than previously expected. With a complete analysis of temporal and spectral parameters of calls, we show for the first time that stress evokes the emission of vocalisations with up-shifted frequency spectrum via a direct effect of corticosterone. Moreover, we show that females and parents are able to decode the information carried by stressed-induced calls of respectively their male partner and their young, as they exhibit modifications of behaviour in accordance with the context. The physical processes leading to the emission of stressed-induced vocalisations are discussed by applying the source-filter theory usually used in mammals. Adaptive values are also proposed, in regards with the zebra finch social network and predation risks for the caller. This work gives new evidences about the expression of stress in birds, and proposes a comprehensive study, from the physiological signals involved in stress to the resulting modifications of communication behaviour for the sender, that leads to an adaptive response from the receivers
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Kern, Julie. "Flexible receiver responses to anti-predator vocalisations in dwarf mongooses." Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.702940.

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Vocal communication underpins behavioural interactions in many species. Receivers often show flexible responses to the same or acoustically similar vocalisations, but the causes and adaptive significance of this flexibility remain poorly understood in comparison to variation in signaller behaviour. In this thesis, I explore flexibility in responses to anti-predator vocalisations depending on caller identity and context, using dwarf mongooses (Helogale parvula) as a model system. I demonstrate that foragers rely more on surveillance calls from dominant sentinels compared to subordinates; dominant individuals perform more sentinel duty and chose higher guard posts, thus may provide higher quality information (Chapter 2). I find little evidence that caller dominance status affects response to recruitment calls, but that individuals show a stronger mobbing response to recruitment calls of closely affiliated groupmates; anti-predator assistance may be a benefit of close 'friendships' (Chapter 3). In Chapter 4, I examine whether receivers balance personal and social information when deciding whether to respond to potentially false alarm calls. Individuals use alarm · calls when they provide information about risk which is novel compared to personal information, are more responsive to alarms from sentinels (whose elevated position enhances predator detection) than foragers, and are more likely to respond when supplementary fed, adjusting their responses to the relative likelihood of predation and starvation. In Chapter 5, I explore potential effects of anthropogenic noise on receiver behaviour. Traffic noise lessens the response of foragers to surveillance calls through a combination of partial acoustic masking and greater perceived risk, disrupting optimisation of the foraging-vigilance trade-off. Finally, I show the importance of having previous knowledge about signallers when assessing available social information quality; foragers treated surveillance calls from recent immigrants as less reliable than those from resident individuals, and thus dispersal may carry short-term information costs (Chapter 6).
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Green, Alexandra Clare. "Decoding Holstein-Friesian dairy cattle vocalisations: Applications for welfare assessment." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/24277.

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The information encoded in cattle vocalisations remains underexplored. The objective of this thesis is to provide fundamental knowledge on the vocal behaviour of Holstein-Friesian cows exhibited during a variety of free-ranging and commercial dairy farming contexts. This thesis commenced with a literature review of previous cattle bioacoustics studies (Chapter 2) and highlighted the benefits of adopting the human-derived source-filter theory and arousal-valence dimensional framework for deciphering vocal information content. The experiment provided as Chapter 3 revealed that heifers have individually distinct voices, with different source and nonlinear parameters contributing to this distinctiveness. This work is also the first to show that heifer vocal individuality is maintained across putatively positive and negative farming contexts. Chapter 4 observed cow vocalisations during parturition and calf separation, uncovering context-related variation in the spectrographic vocal features and underlying phonatory gestures of the cows. Chapter 5 further showed that a disruption to cow and calf contact can lead to temporal modulations in the organisation of vocal, maternal and stress responses in cows. The vocal features observed in Chapters 4 and 5 varied depending on the signal receiver as well as distance over which communication occurred. These features also likely reflected emotional or motivational differences in the peri-partum cows. This thesis enhances our understanding of the static and dynamic information content of cattle vocalisations and demonstrates the feasibility of assessing certain vocal parameters in the commercial farming environment, where the soundscape is uncontrolled. It may also encourage farming practices to be shaped according to the vocal feedback of cows and highlights the opportunity to vocally assess cow welfare by visual and aural means.
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Pye, A. "The perception of emotion and identity in non-speech vocalisations." Thesis, Bangor University, 2015. https://research.bangor.ac.uk/portal/en/theses/the-perception-of-emotion-and-identity-in-nonspeech-vocalisations(efff271d-3c3a-4a39-9ccb-b51cadb937e8).html.

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The voice contains a wealth of information relevant for successful and meaningful social interactions. Aside from speech, the vocal signal also contains paralinguistic information such as the emotional state and identity of the speaker. The three empirical chapters reported in this thesis research the perceptual processing of paralinguistic vocal cues. The first set of studies uses unimodal adaptation to explore the mental representation of emotion in the voice. Using a series of different adaptor stimuli -human emotional vocalisations, emotive dog calls and affective instrumental bursts- it was found that aftereffects in human vocal emotion perception were largest following adaptation to human vocalisations. There was still an aftereffect present following adaptation to dog calls, however it was smaller in magnitude than that of the human vocalisation aftereffect and potentially as a result of the acoustic similarities between adaptor and test stimuli. Taken together, these studies suggest that the mental representation of emotion in the voice is not species specific but is specific to vocalisations as opposed to all affective auditory stimuli. The second empirical chapter examines the supramodal relationship between identity and emotion in face-voice adaptation. It was found that emotional faces have the ability to produce aftereffects in vocal emotion perception, irrespective of the identity of the adaptor and test stimuli being congruent. However, this effect was found to be dependent upon the adapting stimuli being dynamic as opposed to static in nature. The final experimental chapter looks at the mechanisms underlying the perception of vocal identity. A voice matching test was developed and standardised, finding large individual differences in voice matching ability. Furthermore, in an identity adaptation experiment, absolute difference in aftereffect size demonstrated a trend towards significance when correlated with voice matching ability, suggesting that there is a relationship between perceptual abilities and the degree of plasticity observed in response adaptation.
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Ambrose, Lesley. "Species diversity in West and Central African Galagos (primates, galagonidae) : the use of acoustic analysis." Thesis, Oxford Brookes University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325286.

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Delsaut, Michel. "Acquisition de la valeur attractive des vocalisations : approche expérimentale chez l'oiseau." Lille 1, 1987. http://www.theses.fr/1987LIL10096.

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Dans la nature, les oiseaux développent très précocement une préférence marquée pour les membres de leur propre espèce. Cette préférence, qui se traduit par le rapprochement réciproque des individus, résulte du caractère attractif de certains stimulus visuels ou auditifs et la réponse d'approche, émise lors de la perception de ces stimulus, constitue un élément essentiel des interactions sociales. Le problème que nous avons voulu aborder ici est celui du développement de cette réponse d'approche et plus précisément de la relation entre celle-ci et le stimulus qui la déclenche. Dans ce travail, qui est donc destiné à analyser les mécanismes qui déterminent la valeur attractive des signaux émis lors des interactions sociales, nous nous attacherons plus particulièrement à l'étude des vocalisations. Cependant, dans la mesure où elles leur sont souvent associées, les stimulus émanant du partenaire seront également envisagés.
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Nachiketha, Sharma Ramamurthy. "Vocal repertoire and disturbance-associated vocalisations in free-ranging Asian elephants." Kyoto University, 2020. http://hdl.handle.net/2433/253134.

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付記する学位プログラム名: 霊長類学・ワイルドライフサイエンス・リーディング大学院
Kyoto University (京都大学)
0048
新制・課程博士
博士(理学)
甲第22298号
理博第4612号
新制||理||1661(附属図書館)
京都大学大学院理学研究科生物科学専攻
(主査)教授 幸島 司郎, 教授 平田 聡, 教授 伊谷 原一
学位規則第4条第1項該当
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Books on the topic "Vocalisations"

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Institut français d'archéologie orientale du Caire., ed. La vocalisation de la langue égyptienne. [Cairo]: Institut français d'archéologie orientale du Caire, 1990.

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Vycichl, Werner. La vocalisation de la langue égyptienne. Le Caire: Institut français d'archéologie orientale, 1990.

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Kilani, Marwan. Vocalisation in group writing: A new proposal. Hamburg: Widmaier Verlag, 2019.

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Poor Paul : L vocalisation and the process of syllable-coda weakening. Frankfurt am Main: Lang, 2008.

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Filipi, Anna. Toddler and parent interaction: The organisation of gaze, pointing, and vocalisation. Amsterdam: John Benjamins Pub. Company, 2009.

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Toddler and parent interaction: The organisation of gaze, pointing and vocalisation. Amsterdam: John Benjamins Pub. Co., 2009.

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Laurer, Christina. Poor Paul : L vocalisation and the process of syllable-coda weakening. Frankfurt am Main: Lang, 2008.

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Miller, Edward H. Acoustic signals of shorebirds: A survey and review of published information. Victoria, B.C., Canada: Royal British Columbia Museum, 1992.

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Primate communication and human language: Vocalisation, gestures, imitation and deixis in humans and non-humans. Amsterdam: John Benjamins Pub. Company, 2011.

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Richter, Christoph F. Sperm whale watching off Kaikoura, New Zealand: Effects of current activities on surfacing and vocalisation patterns. Wellington, N.Z: Dept. of Conservation, 2003.

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Book chapters on the topic "Vocalisations"

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Jan, Steven. "5 Animal “Musicality” and Animal “Music”." In Music in Evolution and Evolution in Music, 391–472. Cambridge, UK: Open Book Publishers, 2022. http://dx.doi.org/10.11647/obp.0301.05.

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Chapter 5: examines the extent to which certain animals might be understood to possess musicality and music. After a general discussion of creativity in the light of Margaret Boden’s (and others’) ideas, the vocalisations of a number of animal species – certain primates, birds, and cetaceans – are considered in terms of their evolutionary origins, adaptive function, and relation-ship to human music and language. It is argued that the vocalisations of certain birds and certain whales are memetic/musilinguistic in the way that the vocalisations of early humans may have been – there are indeed striking structural correspondences between bird and whale song and human music – and thus these animal species appear to be at the threshold of the music-language bifurcation that occurred in our own species. The implications of this for thought and consciousness in those species are also considered here, revisiting an issue first discussed in Chapter 3 in the context of the relationship between human language and thought.
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Murugaiya, Ramashini, Manisha Milani Mahagammulle Gamage, Krishani Murugiah, and Madhumathy Perumal. "Significance of Acoustic Features in Vertebrate Vocalisations Related Applications." In Acoustic-Based Applications for Vertebrate Vocalization, 19–38. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-85773-8_2.

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Lokhandwala, Seema, Rohit Sinha, Sreeram Ganji, and Balakrishna Pailla. "Decoding Asian Elephant Vocalisations: Unravelling Call Types, Context-Specific Behaviors, and Individual Identities." In Speech and Computer, 367–79. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-48312-7_30.

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Moore, Roger K., and Ben Mitchinson. "A Biomimetic Vocalisation System for MiRo." In Biomimetic and Biohybrid Systems, 363–74. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63537-8_30.

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Borowsky, Toni. "The vocalisation of darklin Australian English." In Varieties of English Around the World, 69. Amsterdam: John Benjamins Publishing Company, 2001. http://dx.doi.org/10.1075/veaw.g26.07bor.

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Murugaiya, Ramashini, Manisha Milani Mahagammulle Gamage, Krishani Murugiah, and Madhumathy Perumal. "Trending Technologies in Vertebrate Vocalisation Applications." In Acoustic-Based Applications for Vertebrate Vocalization, 39–56. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-85773-8_3.

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Murugaiya, Ramashini, Manisha Milani Mahagammulle Gamage, Krishani Murugiah, and Madhumathy Perumal. "Introduction to Applications on Vertebrate Vocalisation." In Acoustic-Based Applications for Vertebrate Vocalization, 1–18. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-85773-8_1.

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Breuer, Yochanan. "Dissonance between Masoretic Vocalisation and Cantillation in Biblical Verse Division." In Semitic Languages and Cultures, 243–88. Cambridge, UK: Open Book Publishers, 2022. http://dx.doi.org/10.11647/obp.0330.07.

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The Masoretic text is the final stage of a process during which the Masoretes had to decide between numerous various readings in order to produce a fixed and consistent text. Although the final production is a remarkable achievement, the Masoretic text still contains cases of inconsistencies. The prominent example is the discrepancy between the ketiv (the way the word should be written) and the qere (the way the word should be pronounced), where we find two contradictory readings in the same word. In this article, a similar phenomenon is described regarding the vocalisation and the cantillation. Although the vocalisation and the cantillation usually reflect division of a verse according to the same interpretation, there are also cases where they reflect two opposing divisions based on different interpretations. Awareness of this may enrich our understanding of the complexity that was involved in the fixing of the Masoretic text.
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Stenbrenden, Gjertrud F. "A modern light on diachronic processes affecting coda /l/ in English." In Keys to the History of English, 82–102. Amsterdam: John Benjamins Publishing Company, 2024. http://dx.doi.org/10.1075/cilt.363.04ste.

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This paper examines historical changes affecting coda laterals in British English, in the light of findings from articulatory phonology, with some insights from acoustic and perceptual phonetics as well. Historically, coda laterals induce pre-lateral diphthongisation and are themselves vocalised/lost, usually to a back rounded vowel. Coda laterals involve a radical gesture (retracted tongue root), and diphthongisation is caused by a gestural conflict between the laminal-dorsal gesture of the vowel and the radical gesture of the following lateral, producing an excrescent vowel in the transition. This excrescent vowel sounds like a schwa or /ɔ/ due to a shared post-oral gesture between these vowels and coda laterals. Vocalisation/loss is caused by gestural reduction, whether in terms of time, timing or space.
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Martín-Contreras, Elvira. "Using the Masora for Interpreting the Vocalisation and Accentuation of the Biblical Text." In Semitic Languages and Cultures, 1–22. Cambridge, UK: Open Book Publishers, 2022. http://dx.doi.org/10.11647/obp.0330.01.

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The marginal annotations that appear with the biblical text in most medieval biblical manuscripts—called by the technical term Masora—are hardly taken into account when interpreting the biblical text. Their idiosyncratic characteristics (they are formulated briefly, concisely, and, on many occasions, elliptically) make it nearly impossible to appreciate the content of the annotation and its possible interpretive relevance on a first reading. All these difficulties can be resolved, however, by establishing implicit information and formulating a clear methodology as to how to analyse the Masoretic annotations. This allows us to study them and apply them to the interpretation of the biblical text. This article shows the benefits of using the Masora for the interpretation of the biblical text through some selected examples, all of them related to vocalisation and stress. The content of these Masora annotations is explained and applied to textual interpretation.
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Conference papers on the topic "Vocalisations"

1

Gregory, Adele, Marija Tabain, and Michael Robb. "Duration of early vocalisations." In Interspeech 2013. ISCA: ISCA, 2013. http://dx.doi.org/10.21437/interspeech.2013-338.

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Trouvain, Jürgen. "Laughing, breathing, clicking the prosody of nonverbal vocalisations." In 7th International Conference on Speech Prosody 2014. ISCA: ISCA, 2014. http://dx.doi.org/10.21437/speechprosody.2014-107.

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O’Reilly, Colm, Nicola M. Marples, David J. Kelly, and Naomi Harte. "YIN-Bird: Improved Pitch Tracking for Bird Vocalisations." In Interspeech 2016. ISCA, 2016. http://dx.doi.org/10.21437/interspeech.2016-90.

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Battistini, Emiliano. "Vocalisations animales : ré-articulation verbale et jeu d’énonciation." In La parole aux animaux. Conditions d’extension de l’énonciation. Fabula, 2018. http://dx.doi.org/10.58282/colloques.5376.

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Zhang, Zixing, Alejandrina Cristia, Anne Warlaumont, and Björn Schuller. "Automated Classification of Children’s Linguistic versus Non-Linguistic Vocalisations." In Interspeech 2018. ISCA: ISCA, 2018. http://dx.doi.org/10.21437/interspeech.2018-2523.

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Fukuzawa, Yukio, Stephen Marsland, Matthew Pawley, and Andrew Gilman. "Segmentation of harmonic syllables in noisy recordings of bird vocalisations." In 2016 International Conference on Image and Vision Computing New Zealand (IVCNZ). IEEE, 2016. http://dx.doi.org/10.1109/ivcnz.2016.7804445.

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Amiriparian, Shahin, Alice Baird, Sahib Julka, Alyssa Alcorn, Sandra Ottl, Sunčica Petrović, Eloise Ainger, Nicholas Cummins, and Björn Schuller. "Recognition of Echolalic Autistic Child Vocalisations Utilising Convolutional Recurrent Neural Networks." In Interspeech 2018. ISCA: ISCA, 2018. http://dx.doi.org/10.21437/interspeech.2018-1772.

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Baird, Alice, Shahin Amiriparian, Nicholas Cummins, Alyssa M. Alcorn, Anton Batliner, Sergey Pugachevskiy, Michael Freitag, Maurice Gerczuk, and Björn Schuller. "Automatic Classification of Autistic Child Vocalisations: A Novel Database and Results." In Interspeech 2017. ISCA: ISCA, 2017. http://dx.doi.org/10.21437/interspeech.2017-730.

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Xie, Jie, Michael Towsey, Jinglan Zhang, and Paul Roe. "Image Processing and Classification Procedure for the Analysis of Australian Frog Vocalisations." In ICMR '15: International Conference on Multimedia Retrieval. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2764873.2764878.

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Castro, M., L. Duboc, M. Freixes, G. J. Ginovart-Panisello, R. Guevara, C. Larrondo, P. Llonch, et al. "Methodology Description of a Real-Environment Commercial Farm to Analyse Cattle Vocalisations." In 10th Convention of the European Acoustics Association Forum Acusticum 2023. Turin, Italy: European Acoustics Association, 2022. http://dx.doi.org/10.61782/fa.2023.1237.

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