Parameters for Describing the Diphthongs of the English Sound System
Parameters for Describing the Diphthongs of the English Sound System When we speak English, we do not always use simple vowel sounds. Sometimes the voice starts from one vowel position and moves smoothly towards another vowel position within the same syllable. This moving vowel sound is called a diphthong . A simple example is the vowel sound in my /maɪ/. The sound does not stay in one place. It begins with /a/ and glides towards /ɪ/. That movement is what makes it a diphthong. In simple terms, a diphthong is a vowel sound that glides from one vowel quality to another in one syllable (Roach, 2009; Ladefoged & Johnson, 2014). What Makes a Diphthong Different from a Pure Vowel? A pure vowel , also called a monophthong , has one steady sound. For example, the vowel in see /siː/ is fairly steady. The tongue and lips do not move much while the vowel is being pronounced. A diphthong , however, changes as it is spoken. The mouth begins in one position and moves towards another. F...