Study of acoustic correlates of stress and grammatical differentiation of homonymous verbs in the Mashhad dialect.

Document Type : Original Article

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Assistant Professor of Contemporary Languages and Dialects Department, Institute of Cultural Heritage and Tourism (ICHT) Tehran, Iran

Abstract

Introduction: The present study deals with the homonymous verbs of the Mashhad dialect that are used in different grammatical structures. These verbs were divided into two parts: two-syllable and more than two-syllable. Method: The present descriptive-analytical study was conducted on 10 male Mashhadi speakers in the age range of 40 to 60 years. The role of acoustic correlates of emphasis and its effect on the grammatical differentiation of homonymous verbs of the Mashhadi dialect was investigated using important acoustic parameters of speech tone, namely fundamental frequency, intensity, and duration. In this study, 960 verbs were produced and analyzed using Pratt speech analysis software. These verbs are in 8 grammatical tenses: present continuous and future, simple past and past perfect, past continuous and past perfect continuous, past perfect and past perfect. Findings: Dissyllabic verbs of distant tense are produced with more duration and lower pitch, while verbs of nearer tense have less duration and lower pitch. Conclusion: Mashhadi speakers require two factors to induce the concept of distant time in two-syllable verbs: duration and base frequency, and in verbs with more than two syllables, it requires shifting the stress position.

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