Bilingual acoustic voice variation: the case of Sorani Kurdish-Persian speakers

Many individuals around the world speak two or more than languages. This phenomenon adds a fascinating dimension of variability to speech, both in perception and production. But do bilinguals change their voice when they switch from one language other? It is typically assumed that while some aspects speech signal vary for linguistic reasons, indexical features remain unchanged across Yet little known about influence on within- between-speaker vocal variability. The present study investigated how acoustic parameters quality are structured languages bilingual speaker what extent such may between speakers. For this purpose, samples 10 simultaneous Sorani Kurdish-Persian speakers were acoustically analyzed. Following psychoacoustic model proposed by Kreiman (2014) using series principal component analyses, we found followed similar pattern different languages, suggesting each has unique but uses same switching other.