The key to improving pronunciation and articulation in English is the vowels.
Mastering the correct vowel sounds and placement of stress on the correct syllable will dramatically improve one’s overall pronunciation.
Vowels can be categorized into Front, Back, Mid vowels and Monophthong and Diphthong.
Vowels are produced without significant constriction of the air flowing through the mouth.
Vowels do not have a place and manner of articulation.
Vowels are almost always voiced.
Vowels are produced with a relatively open vocal tract.
The standard descriptors for consonants (place, manner and voicing) are not helpful when describing vowels.
Vocal fold vibration is the source for vowel sounds.
Vowels can be divided into sets based on voicing, tongue position, and tongue height.
In English, all vowels are voiced (except when whispering), but some languages such as Japanese have voiceless vowels as well.
Front Vowels are pronounced with the tongue positioned forward the mouth.
Central Vowels are pronounced with the tongue positioned in the middle of the mouth.
Backward Vowels are pronounced with the tongue positioned towards the back of the mouth.
High Vowels, also known as Closed Vowels, are pronounced with the tongue raised high.
Mid Vowels, also known as Half-Close Vowels, are pronounced with the tongue raised halfway.
Low Vowels, also known as Open Vowels, are pronounced with the tongue raised low.
Tense vowels are pronounced with more muscle tension and are usually longer.
Lax vowels are pronounced with less tension and are usually shorter.
Differences in vowel tension and length can affect the pronunciation and meaning of words.
The seven short vowels in English are: /ɪ/ as in sit, /ʊ/ as in boot, /e/ as in bed, /ə/ as in letter, /æ/ as in rat, /ʌ/ as in bus, /ɒ/ as in pot.
The five long vowels in English are: /a:/ as in calm, /u:/ as in cool, /i:/ as in leap, /3:/ as in turn, /ɔ:/ as in all.
In terms of length, English distinguishes between long vowels such as in knee and short vowels like knit.
Long monophthongs are vowels with long pronunciation.
The word monophthong comes from the Greek “mono”, which means “one”, and “-phthong”, which means “tone” or “sound”.
In English, rounding is allophonic (back vowels are rounded; front vowels are not), but some languages contain front rounded vowels and some others contain back unrounded vowels.
In English, length is allophonic (tense vowels are long; lax vowels are short), but some languages distinguish between vowels that are the same in quality only different in length.
The vowel sound in eat and sit is an example of a short monophthong.
A monophthong is a vowel sound pronounced as a single, unchanging sound, without any significant change in quality or length.
Diphthongs are vowels in which there is a change in quality during a single syllable, as in the English words boy, buy, bow.
There are two types of vowels in English, namely, monophthongs and diphthongs.
Monophthongs are sometimes called pure vowels.
Short monophthongs are vowels with a ‘short’ sound, which means that they are not extended sounds.
Diphthongs can be analyzed as a sequence of two vowels or as vowel guide.
There are two types of Monophthongs: Long and Short Monophthongs.