I've noticed that northen French accent, especially in paris, have 'only three' nasal vowels, which are /æ̃/,/ã/(very much rounded than I thought), and /ɔ̃/. Is this quite correct or am I misunderstood in some part?
And I also have a trouble with this because my french teacher told me to pronounce 'un'(indefinite article) as /æ̃/, not /ɛ̃/(probably /œ/ which is historical).
Then the pronunciation in 'i. ain, aim, ein, eim, en, em, in, im, un, um, ym, yn' would all be /æ̃/...
but when I listen carefully to the teaching materials, they pronounce 'un' like /ã/, which is easier to pronounce(probably /œ/). Then can I safely assume that the speaker in the audio isn't from northern France? Many accents in French are beautiful and I'm only just curious about this /æ̃/ shift.