Speech consists of a continuous stream of acoustic signals, yet humans can segment words and other constituents from each other with astonishing precision. The acoustic properties that support this process are not well understood and remain understudied for the vast majority of the world’s languages, in particular regarding their potential variation. Here we report cross-linguistic evidence for the lengthening of word-initial consonants across a typologically diverse sample of 51 languages. Using Bayesian multilevel regression, we find that on average, word-initial consonants are about 13 ms longer than word-medial consonants. The cross-linguistic distribution of the effect indicates that despite individual differences in the phonology of the sampled languages, the lengthening of word-initial consonants is a widespread strategy to mark the onset of words in the continuous acoustic signal of human speech. These findings may be crucial for a better understanding of the incremental processing of speech and speech segmentation. Blum et al. report evidence of lengthening of word-initial consonants across a diverse sample of 51 languages. On average, these consonants are 13 ms longer than word-medial ones, helping mark word boundaries in continuous speech, which is crucial for understanding speech.

Meeting of the German Linguistics Society (DGfS) at the University of Hamburg in March 2020.We, the editors, would like to express our thanks to the audience at the workshop for very stimulating discussion,

This study investigates the linguistic expression of bring and take events and more generally of the semantic domain of directed caused accompanied motion ('directed CAM') across a sample of eight languages of the Pacific and the Americas. Unlike English, the majority of languages in our sample do not lexicalise directed CAM events by simple verbs, but rather encode the defining meaning components - caused motion, accompaniment, and directedness - in morphosyntactically complex constructions. The study shows a high degree of crosslinguistic diversity, even among closely related languages. Meaning components are contributed to directed CAM expressions by a mix of lexical semantics, morphosyntax, and pragmatic means. The study proposes a text-based, semantic typology of directed CAM events by drawing on corpus data from endangered languages.

Lengthening of segments at the end of prosodic domains is commonly considered a universal phenomenon, but language-specific variation has also been reported, specifically in languages with a phonological vowel length con-trast. This cross-linguistic study uses spontaneous speech data from the DoReCo corpus as a testbed to inves-tigate Final Lengthening (FL) in a diverse sample of 25 mostly understudied languages, thirteen of which have a phonological vowel length contrast. The duration of vowels was labeled using an automatic aligner, with addi-tional manual corrections of word boundaries upon which refined segment alignments were created. The study reveals that (i) FL is a widespread process across languages; (ii) FL shows a wide variety of manifestations with respect to the degree and scope of lengthening; (iii) there are several significant interactions between phonological length and positional lengthening. These results lend support to theories assuming a phonological nature of Final Lengthening. CO 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).

Relationships between phonological and morphological complexity have long been proposed in the linguistic literature, with empirical investigations often seeking complexity trade-offs. Positive complexity correlations tend not to be viewed in terms of motivations. We argue that positive complexity correlations can be diachronically well-motivated, emerging from crosslinguistically prevalent processes of language change. We examine the correlation between syllable complexity and morphological synthesis, hypothesizing that the process of grammaticalization motivates a positive relationship between the two features. To test this, we conduct a typological survey of 95 diverse languages and a corpus study of 21 languages with substantive (predominantly >10,000 words) corpora from the DoReCo project. The first study establishes a significant positive correlation between syllable complexity, measured in terms of maximal syllable patterns, and the index of synthesis (morpheme/word ratio). The second study tests the hypothesis that the relationship between syllable complexity and synthesis holds at local (word-initial and word-final) levels and within noun and verb types, as predicted by a grammaticalization account. While the findings of the corpus study are limited in their statistical power, the observed tendencies are consistent with our predictions. This study contributes important findings to the complexity literature, as well as a novel method which incorporates broad typological sampling and deep corpus analysis.

This article argues that documentary linguistics and corpus phonetics can form a happy marriage in that corpora extracted from language documentation collections contain highly relevant data that can advance corpus phonetics by enabling broad comparative studies. To make this point, this article reviews previous research on phonetic lengthening at utterance boundaries and pause probabilities before nouns and verbs in ten languages. I then introduce the DoReCo initiative, which, based on experience gained from these studies, builds a database of time-aligned corpora from documentary collections of 50 languages for corpus phonetic research and other research purposes.

Zipf's Law of Abbreviation and Menzerath's Law both make predictions about the length of linguistic units, based on corpus frequency and the length of the carrier unit. Each contributes to the efficiency of languages: for Zipf, units are more likely to be reduced when they are highly predictable, due to their frequency; for Menzerath, units are more likely to be reduced when there are more sub-units to contribute to the structural information of the carrier unit. However, it remains unclear how the two laws work together in determining unit length at a given level of linguistic structure. We examine this question regarding the length of morphemes in spoken corpora of nine typologically diverse languages drawn from the DoReCo corpus, showing that Zipf's Law is a stronger predictor, but that the two laws interact with one another. We also explore how this is affected by specific typological characteristics, such as morphological complexity.

Words in utterance-final positions are often pronounced more slowly than utterance-medial words, as previous studies on individual languages have shown. This paper provides a systematic cross-linguistic comparison of relative durations of final and penultimate words in utterances in terms of the degree to which such words are lengthened. The study uses time-aligned corpora from 10 genealogically, areally, and culturally diverse languages, including eight small, under-resourced, and mostly endangered languages, as well as English and Dutch. Clear effects of lengthening words at the end of utterances are found in all 10 languages, but the degrees of lengthening vary. Languages also differ in the relative durations of words that precede utterance-final words. In languages with on average short words in terms of number of segments, these penultimate words are also lengthened. This suggests that lengthening extends backwards beyond the final word in these languages, but not in languages with on average longer words. Such typological patterns highlight the importance of examining prosodic phenomena in diverse language samples beyond the small set of majority languages most commonly investigated so far.

This paper explores the application of quantitative methods to study the effect of various factors on phonetic word duration in ten languages. Data on most of these languages were collected in fieldwork aiming at documenting spontaneous speech in mostly endangered languages, to be used for multiple purposes, including the preservation of cultural heritage and community work. Here we show the feasibility of studying processes of online acceleration and deceleration of speech across languages using such data, which have not been considered for this purpose before. Our results show that it is possible to detect a consistent effect of higher frequency of words leading to faster articulation even in the relatively small language documentation corpora used here. We also show that nouns tend to be pronounced more slowly than verbs when controlling for other factors. Comparison of the effects of these and other factors shows that some of them are difficult to capture with the current data and methods, including potential effects of cross-linguistic differences in morphological complexity. In general, this paper argues for widening the cross-linguistic scope of phonetic and psycholinguistic research by including the wealth of language documentation data that has recently become available.

Natural speech data on many languages have been collected by language documentation projects aiming to preserve lingustic and cultural traditions in audivisual records. These data hold great potential for large-scale cross-linguistic research into phonetics and language processing. Major obstacles to utilizing such data for typological studies include the non-homogenous nature of file formats and annotation conventions found both across and within archived collections. Moreover, time-aligned audio transcriptions are typically only available at the level of broad (multi-word) phrases but not at the word and segment levels. We report on solutions developed for these issues within the DoReCo (DOcumentation REference COrpus) project. DoReCo aims at providing time-aligned transcriptions for at least 50 collections of under-resourced languages. This paper gives a preliminary overview of the current state of the project and details our workflow, in particular standardization of formats and conventions, the addition of segmental alignments with WebMAUS, and DoReCo’s applicability for subsequent research programs. By making the data accessible to the scientific community, DoReCo is designed to bridge the gap between language documentation and linguistic inquiry.

Classifiers and noun class markers are often semantically general and semantically opaque compared to open-class nouns, and in this sense they constitute a semantic reduction of the noun universe. These two semantic characteristics also play important roles in the diachronic development of nominal classification systems. First, the need for semantically general forms for anaphoric reference may be a possible motivation for developing nominal classification in the first place. Second, opaque classification, which may, for example, emerge through coalescence of classes with homophonous markers, may be replaced by transparent classification because of the incompatibility of opaque classification and certain syntactic constructions, such as contrastive focus. Finally, opaque classification, typical of grammatical gender systems, is less likely to diffuse through language contact than transparent classification, which is typical for other types of systems, including numeral classifier systems.

By force of nature, every bit of spoken language is produced at a particular speed. However, this speed is not constant-speakers regularly speed up and slow down. Variation in speech rate is influenced by a complex combination of factors, including the frequency and predictability of words, their information status, and their position within an utterance. Here, we use speech rate as an index of word-planning effort and focus on the time window during which speakers prepare the production of words from the two major lexical classes, nouns and verbs. We show that, when naturalistic speech is sampled from languages all over the world, there is a robust cross-linguistic tendency for slower speech before nouns compared with verbs, both in terms of slower articulation and more pauses. We attribute this slowdown effect to the increased amount of planning that nouns require compared with verbs. Unlike verbs, nouns can typically only be used when they represent new or unexpected information; otherwise, they have to be replaced by pronouns or be omitted. These conditions on noun use appear to outweigh potential advantages stemming from differences in internal complexity between nouns and verbs. Our findings suggest that, beneath the staggering diversity of grammatical structures and cultural settings, there are robust universals of language processing that are intimately tied to how speakers manage referential information when they communicate with one another.

Many drum communication systems around the world transmit information by emulating tonal and rhythmic patterns of spoken languages in sequences of drumbeats. Their rhythmic characteristics, in particular, have not been systematically studied so far, although understanding them represents a rare occasion for providing an original insight into the basic units of speech rhythm as selected by natural speech practices directly based on beats. Here, we analyse a corpus of Bora drum communication from the northwest Amazon, which is nowadays endangered with extinction. We show that four rhythmic units are encoded in the length of pauses between beats. We argue that these units correspond to vowel-to-vowel intervals with different numbers of consonants and vowel lengths. By contrast, aligning beats with syllables, mora or only vowel length yields inconsistent results. Moreover, we also show that Bora drummed messages conventionally select rhythmically distinct markers to further distinguish words. The two phonological tones represented in drummed speech encode only few lexical contrasts. Rhythm thus appears to crucially contribute to the intelligibility of drummed Bora. Our study provides novel evidence for the role of rhythmic structures composed of vowel-to-vowel intervals in the complex puzzle concerning the redundancy and distinctiveness of acoustic features embedded in speech.

South America is the continent with the highest proportion of language isolates: as much as 60" of the lineages are isolates and more than 10" of South American languages are isolates, compared to an average of less than 2.5" on other continents. If isolates are the result of purely historical processes of language expansions and language extinction, there is little reason to suspect that language isolates should be structurally different from non-isolates. In the vicinity of Arutani, Sapé has even fewer, if any speakers left. Puinave is spoken by a relatively large community on the Colombian side of the Orinoco River. Pumé, also called Yaruro or Yuapín, is a relatively vital language spoken in Western Venezuela. Warao is one of the largest languages of Venezuela with about 28,000 speakers along the Caribbean coast. Yuwana is more commonly known as Hodï, sometimes also as Waruwaru, or Chikano.

This discussion note reviews responses of the linguistics profession to the grave issues of language endangerment identified a quarter of a century ago in the journal Language by Krauss, Hale, England, Craig, and others (Hale et al. 1992). Two and a half decades of worldwide research not only have given us a much more accurate picture of the number, phylogeny, and typological variety of the world's languages, but they have also seen the development of a wide range of new approaches, conceptual and technological, to the problem of documenting them. We review these approaches and the manifold discoveries they have unearthed about the enormous variety of linguistic structures. The reach of our knowledge has increased by about 15% of the world's languages, especially in terms of digitally archived material, with about 500 languages now reasonably documented thanks to such major programs as DoBeS, ELDP, and DEL. But linguists are still falling behind in the race to document the planet's rapidly dwindling linguistic diversity, with around 35-42% of the world's languages still substantially undocumented, and in certain countries (such as the US) the call by Krauss (1992) for a significant professional realignment toward language documentation has only been heeded in a few institutions. Apart from the need for an intensified documentarist push in the face of accelerating language loss, we argue that existing language documentation efforts need to do much more to focus on crosslinguistically comparable data sets, sociolinguistic context, semantics, and interpretation of text material, and on methods for bridging the 'transcription bottleneck', which is creating a huge gap between the amount we can record and the amount in our transcribed corpora.