Media and Second Dialect Acquisition

This article addresses the role that different types of media might play in second dialect acquisition. While many scholars agree that broadcast media such as television have little effect on individual speakers’ language use, research across fields (sociolinguistics, second language learning, laboratory phonology, and phonetics) suggests that high levels of engagement could facilitate dialect learning via mediated speech. I will briefly describe the mechanisms underlying acquisition of new dialect features, discuss how these mechanisms might operate when speakers are exposed to speech via specific types of media, and sketch some avenues for future research.

Introduction: Tracing the origin of /s/ variation

This paper provides an introduction to the papers in this special issue on the sociophonetics of /s/. We begin by reviewing some of the principal findings on variation in the production and perception of /s/, summarizing studies in sociolinguistics, experimental phonetics, and laboratory phonology. We go on to identify similarities in the meanings associated with /s/ variation cross-linguistically, and briefly describe how theories of sound symbolism may help us to account for these patterns. We conclude this introductory article with a summary of the contributions to the special issue and a discussion of how together these articles help us to better understand that origin and trajectory of socially meaningful sociophonetic variation.

Models of dataset size, question design, and cross-language speech perception for speech crowdsourcing applications

Transcribers make mistakes. Workers recruited in a crowdsourcing marketplace, because of their varying levels of commitment and education, make more mistakes than workers in a controlled laboratory setting. Methods for compensating transcriber mistakes are desirable because, with such methods available, crowdsourcing has the potential to significantly increase the scale of experiments in laboratory phonology. This paper provides a brief tutorial on statistical learning theory, introducing the relationship between dataset size and estimation error, then presents a theoretical description and preliminary results for two new methods that control labeler error in laboratory phonology experiments. First, we discuss the method of crowdsourcing over error-correcting codes. In the error-correcting-code method, each difficult labeling task is first factored, by the experimenter, into the product of several easy labeling tasks (typically binary). Factoring increases the total number of tasks, nevertheless it results in faster completion and higher accuracy, because workers unable to perform the difficult task may be able to meaningfully contribute to the solution of each easy task. Second, we discuss the use of explicit mathematical models of the errors made by a worker in the crowd. In particular, we introduce the method of mismatched crowdsourcing, in which workers transcribe a language they do not understand, and an explicit mathematical model of second-language phoneme perception is used to learn and then compensate their transcription errors. Though introduced as technologies that increase the scale of phonology experiments, both methods have implications beyond increased scale. The method of easy questions permits us to probe the perception, by untrained listeners, of complicated phonological models; examples are provided from the prosody of English and Hindi. The method of mismatched crowdsourcing permits us to probe, in more detail than ever before, the perception of phonetic categories by listeners with a different phonological system.