A Cross-Language Comparison of Speaking Rate Effects on the Production of Voice Onset Time in English and Spanish

Abstract

Of interest in the current study was how voice inset time (VOT) was influenced by changes in speaking rate across Spanish and English. Three groups of subjects (English monolinguals, Spanish monolinguals and early Spanish-English bilinguals) produced sentences containing voiced and voiceless bilabial stops at different speaking rates. As in previous research, English monolinguals showed rate-dependent effects on their VOT productions: VOT increased as speaking rate decreased. Spanish monolinguals showed a large effect of speaking rate on the duration of prevoicing of the voiced stops. However, they showed only a small effect of rate on the VOT of their voiceless stops. The bilinguals produced VOT values in each language that were nearly identical to their monolingual counterparts. The results from this study indicate that short-lag stops experience minimal variation as a function of speaking rate regardless of the other contrasting phonetic categories within a particular language. In addition, early bilinguals showed evidence of separate representations for voiced and voiceless stops for English and Spanish.