We present acoustic and auditory analyses of changes to coda /r/ and voice quality in Glasgow English in the early twentieth century. Our initial acoustic analysis suggests that /r/ was weakening across the board based on an increase in F3. However, an auditory analysis of the same data finds no significant changes. An acoustic analysis of the same speakers’ vowels reveals that the shift in F3 is not unique to /r/. It reflects a change in voice quality, which we link to velarization using Vocal Profile Analysis. We then reanalyze the acoustic /r/ data, controlling for voice quality, and find only moderate changes that are restricted to females. These findings provide new evidence for diachronic changes in voice quality, contribute to our understanding of the development of /r/ in Glasgow English, and highlight the importance of investigating speech sounds in their broader context using multiple methodologies.

中文翻译：

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20世纪初格拉斯哥英语的语音质量和尾音/r/

我们对二十世纪初格拉斯哥英语的尾音 /r/ 和语音质量的变化进行了声学和听觉分析。我们最初的声学分析表明 /r/ 基于 F3 的增加而全面减弱。然而，对相同数据的听觉分析发现没有显着变化。对同一说话人元音的声学分析表明，F3 的变化并非 /r/ 独有。它反映了语音质量的变化，我们使用 Vocal Profile Analysis 将其链接到 velarization。然后，我们重新分析声学 /r/ 数据，控制语音质量，并发现仅限于女性的适度变化。这些发现为语音质量的历时变化提供了新的证据，有助于我们理解格拉斯哥英语中 /r/ 的发展，