Vowels 17 English language 8 Malay language 7 Phonetics 7 Pronunciation by foreign speakers 4 Automatic speech recognition 3 Dialects 3 Formants (Speech) 3 Pronunciation 3 Speech processing systems 3 Study and teaching 3 Comparative studies 2 Phonetics, Acoustic 2 Phonology 2 Spoken English 2 Usage 2 Achinese language 1 Arabic speakers 1 Cleft palate 1 Complications 1 Creole dialects, Portuguese 1 Foreign speakers 1 Grammar, Comparative and general 1 Hausa (African people) 1 Indonesian language 1 Kristang language 1 Markov processes 1 Neural networks (Computer science) 1 Persian speakers 1 Phonology, Comparative 1