Effects of vocal accommodation have been reported in a wide range of contexts, but they have typically been small. The absence of effects in some cases has proven perplexing. In the present investigation I present innovative methods for the representation of phonetic distance between phonetic tokens and the analysis of phonetic accommodation. I take a broad crosslinguistic perspective and report effects of linguistic background (L1) on patterns of phonetic convergence toward typical monolingual English voiceless stop voice-onset-times (VOTs).

I propose that patterns of accommodation in laryngeal-oral coordination, as instantiated by voiceless stop VOTs, will reflect general principles of motor coordination (preferences for stable/in-phase coordination, cf. Browman & Goldstein, 1988; Haken, Kelso, & Bunz, 1985). Thus, stable, near-zero VOTs (cf. Spanish) will be less likely to show convergence toward intermediate English VOT, whereas less stable, long VOTs (cf. Korean) will be more likely to converge. Monolingual English and bilingual (Korean-English, Spanish-English) participants completed word shadowing and reading tasks. Their vowel-normalized voiceless stop VOTs were submitted to two analyses which confirm the articulatory stability hypothesis and reveal group-specific changes in vocal accommodation over time. The first involves a general baseline-to-test comparison, while in the second, a trial-specific difference from baseline is used as a dependent measure.

The results offer new insights into the effects of language background on vocal accommodation, and the analytical approach offers a means to more cleanly isolate subtle effects of accommodation in speech among a multitude of competing factors.

声音调节的影响已在广泛的背景下得到报道，但它们通常很小。在某些情况下没有影响已被证明令人困惑。在目前的调查中，我提出了用于表示语音标记之间的语音距离和分析语音调节的创新方法。我采取了广泛的跨语言视角，并报告了语言背景 (L1) 对典型单语英语清音停止发声时间 (VOT) 的语音收敛模式的影响。

我提出喉口协调中的调节模式，如清音停止 VOT 所例示，将反映运动协调的一般原则（稳定/同相协调的偏好，参见 Browman 和 Goldstein，1988；Haken、Kelso 和 Bunz , 1985)。因此，稳定的、接近于零的 VOT（参见西班牙语）不太可能向中级英语 VOT 收敛，而不太稳定的长 VOT（参见韩语）则更有可能收敛。单语英语和双语（韩语-英语、西班牙语-英语）参与者完成了单词映射和阅读任务。他们的元音归一化清音塞音 VOT 进行了两次分析，证实了发音稳定性假设，并揭示了随着时间的推移声乐调节的组特异性变化。第一个涉及一般的基线到测试比较，

结果为语言背景对声音调节的影响提供了新的见解，分析方法提供了一种方法，可以在众多竞争因素中更清晰地分离出语言调节的微妙影响。