Perceptual and acoustic research on dialect variation in the United States requires an appropriate corpus of spoken language materials. Existing speech corpora that include dialect variation are limited by poor recording quality, small numbers of talkers, and/or small samples of speech from each talker. The Nationwide Speech Project corpus was designed to contain a large amount of speech produced by male and female talkers representing the primary regional varieties of American English. Five male and five female talkers from each of six dialect regions in the United States were recorded reading words, sentences, passages, and in interviews with an experimenter, using high quality digital recording equipment in a sound-attenuated booth. The resulting corpus contains nearly an hour of speech from each of the 60 talkers that can be used in future research on the perception and production of dialect variation.

中文翻译：

---

全国演讲项目：美国英语方言的新语料库。

美国方言变异的感知和声学研究需要适当的口语材料语料库。包含方言变化的现有语音语料库受到录音质量差、讲话者数量少和/或每个讲话者的语音样本少的限制。Nationwide Speech Project 语料库旨在包含由代表美国英语主要区域变体的男性和女性演讲者产生的大量演讲。来自美国六个方言区的五名男性和五名女性谈话者在阅读单词、句子、段落以及与实验者的访谈中被记录下来，在一个隔音室中使用高质量的数字录音设备。