/o/ is mid-closed, back, rounded and oral, e.g.: dos [do] , eau /o/ , auto [oto] , faux [fo] . /ɔ/ is mid-open, back, rounded and oral, e.g.: bol [bɔl] , mort [mɔʁ] , molle [mɔl] , bonne [bɔn] . As you can see, these vowels are identical, except that the tongue is a little higher for /o/ than it is for /ɔ/.
So, for the short a sound, the body of the tongue is pressed forward and the front of tongue is low. To transition into the short o sound (short o), the jaw opens and the body of the tongue moves back and drops low into the bottom teeth. The lips are more rounded than for the short a sound, but still relaxed.
The open-mid back rounded vowel, or low-mid back rounded vowel, is a type of vowel sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɔ⟩. The IPA symbol is a turned letter c and both the symbol and the sound are commonly called "open-o".
You can use this list to practise the sounds, or as a list of words to be careful in pronouncing. The biggest difference between these two sounds is that /ɒ/ is a short vowel and /ɔ:/ is a long one. The mouth position is also slightly different, with the mouth in /ɔ:/ being slightly tighter and more rounded.
The sound of /əʊ/ (as in "O", "oh" and "owe") is a diphthong, meaning two vowel sounds blended into one. You should be able to see the mouth moving from one position to the other while making the sound, with the mouth becoming smaller and rounder.
The sounds /tʃ/ and /ʃ/ are both voiceless, alveo-palatal consonants. However, /tʃ/ is an affricate while /ʃ/ is a fricative. When you pronounce /tʃ/, the air in your mouth should stop (like a /t/) before it is released (like a /ʃ/).
How to Produce /ɒ/? To produce it, drop the jaw just a little and round the lips, unlike the unrounded /ɑ/ sound. Push your lips together and make a short, voiced sound. As you can see in the picture, the mouth is slightly more open than the /æ/ sound and less rounded than when producing the /ɔ/ sound.
/ɒ/ is a short single sound made without the mouth moving. /əʊ/ is a diphthong -- a longer sound made of two sounds -- meaning that the mouth moves during production of the sound.
Some Ways of Spelling the /ɔ:/ Sound
ore, as in: chore, ore, pore, core, more, etc. our, as in: court, four, mourn, etc. oar, as in: hoarse, coarse, soar, hoard, oar, etc. oor, as in: door, floor, moor, etc.
TL;DR: To pronounce the /aʊ/ sound correctly, connect the /ɑ/ sound to /ʊ/ with a smooth, gliding movement. Step-by-step pronunciation instructions: Mouth: First, open your mouth very wide for the /ɑ/ sound. Then glide into the /ʊ/, closing it partially.
Examples of the ɑ: Sound
art /ɑːt/ arm /ɑːm/ answer /ˈɑːnsə/ argue /ˈɑːgjuː/
The sound /ɑ/ is a low, central, tense vowel. Lower your jaw and tongue. Your lips should be very open but not wide. Breathe out to pronounce the vowel.
The main distinction between these two sounds is that /æ/ is shorter than /ɑ:/, but the mouth position is also different – the reason that doctors say “Say ah” is that /ɑ:/ uses a wide open mouth.
In this lesson, you'll learn how to pronounce the OH as in ROSE vowel sound. You hear this sound in words like “home,” “control,” and “appropriate.” You might think this sound is pretty easy and you've already got it just right.
In the International Phonetic Alphabet the sign ː (not a colon, but two triangles facing each other in an hourglass shape; Unicode U+02D0 ) is used for both vowel and consonant length. This may be doubled for an extra-long sound, or the top half (ˑ) may be used to indicate that a sound is "half long".
In General American IPA phonetic symbol /ɑː/ corresponds to the vowel sound in words like “start", “art", "palm", “spa", "lot" and “stop.” In Received Pronunciation, the IPA phoneme /ɑː/ corresponds to the vowel sound in words like “start", “art", “bath", “ask", "palm" and “spa.”
The /aʊ/ symbol finishes with the same /ʊ/ symbol but starts with the /a/ one, meaning the sound starts with the mouth much tighter and further open than with the /ə/ sound of /əʊ/.
These two are pronounced with exactly the same mouth position but /dʒ/ uses the voice, whereas /tʃ/ is just a sudden puff of air similar to a sneeze.
The / ɪə / diphthong is spelled <eer>, <ear> or <are>. The / eə / diphthong is spelled <air>, <ear> or <are>. This is a contrast between two diphthongs with a difference in starting position but with the same direction of movement. It is a problem for learners and some native speakers, especially New Zealanders.
The ʒ sound is from the 'Consonants Pairs' group and it is called the 'Voiced palato-alveolar sibilant'. This means that you create friction through clenched teeth by directing air flow through a narrow channel formed along the middle of the tongue.