In recent decades, the interest in speech sciences for casual conversations has increased, and researchers have begun to investigate the characteristics of spontaneous and casual speech in different languages, such as German, Dutch, English, French, Spanish and Czech. These types of investigations are based on novel spontaneous speech corpora that allow the systematic research on large amounts of data and contribute to understand the empirical dimension of phonological competence. In this paper we present a new speech corpus of spontaneous Italian based on dialogic interactions (DIA - Dialogic ItAlian), representing the language variety spoken by both native and non-native speakers in a bilingual community. After discussing some of the methodological and theoretical issues concerning the role of speech corpora in the study of language variation, we illustrate how the corpus was created, from data collection to the construction of a database. We then offer an exploratory investigation on some indicators of spontaneity.

在最近的几十年中，人们对休闲对话的语音科学越来越感兴趣，研究人员已开始研究德语，荷兰语，英语，法语，西班牙语和捷克语等不同语言的自发性和随意性语音的特征。这些类型的调查基于新颖的自发语音语料库，该语料库可以对大量数据进行系统的研究，并有助于理解语音能力的经验维度。在本文中，我们提出了一种基于对话互动的自发意大利语新语料库（DIA-Dialogic ItAlian），代表了双语社区中母语和非母语人士所讲的语言多样性。在讨论了有关语音语料库在语言变异研究中的作用的一些方法论和理论问题之后，我们说明了从数据收集到数据库构建的语料库是如何创建的。然后，我们对一些自发性指标进行探索性调查。