When sound travels. Technically it is the mid central unrounded vowel and in English it is only used for unstressed vowels. Central Vowels Slt Info Its vowel backness is front which means the tongue is positioned forward in the mouth without creating a constriction that would be classified as a consonant. How to pronounce mid central unrounded vowel . Acoustic Phonetics - a study of how speech sounds are transmitted. Specify the pronunciation to substitute with the alias attribute. Pronounce the specified word or phrase as a different word or phrase. Whats interesting about the schwa is that almost any vowel letter in English can make this sound probably because it is the neutral vowel and. The vowel ɜ as in urban is the long rounded vowel. Figure 9Central vowels of SSBE. Articulatory Phonetics - describes how vowels and consonants are produced or articulated in various parts of the mouth and throat. The only difference however between these two dialects is the wa...