Some consonants such as n,d,t are usually alveolar in English, except that they are replaced by dentals when they are before dental fricatives (th): tenth, said this, in the….

What about "r" before "th"?

• Arthur: BrE /ɑ:θəʳ/, AmE /ɑ:rθɚ/
• north: /nɔ:θ/, AmE /nɔ:rθ/

My conjectures are:

• a or o are lowered in the mouth so that we have /ɑ/ or /ɔ/.
• the mouth becomes less tensed
• the r is very loose
• n in north becomes dental

Some consonants such as n,d,t are usually alveolar in English, except that they are replaced by dentals when they are before dental fricatives (th): tenth, said this, in the….

What about "r" before "th"?

• Arthur: BrE /ɑ:θəʳ/, AmE /ɑ:rθɚ/
• north: /nɔ:θ/, AmE /nɔ:rθ/ ; northern

My conjectures are:

• a or o are lowered in the mouth so that we have /ɑ/ or /ɔ/.
• the mouth becomes less tensed
• the r is very loose
• n in north becomes dental!

Some consonants such as n,d,t are usually alveolar in English.
Except that they are replaced by dentals when they are before dental fricatives(th).
Examples: tenth, said this, in the...

What about "r" before "th"?
Examples: Arthur ɑ:θəʳ US ɑ:rθɚ, north nɔ:θ US nɔ:rθ, northern.
My conjectures are:
"a" or "o" are lowered in the mouth so that we have ɑ or ɔ .
the mouth becomes less tensed
the "r" is very loose
and "n" in "north" becomes dental!

Some consonants such as n,d,t are usually alveolar in English, except that they are replaced by dentals when they are before dental fricatives  (th): tenth, said this, in the….

What about "r" before "th"?

• Arthur: BrE /ɑ:θəʳ/, AmE /ɑ:rθɚ/
• north: /nɔ:θ/, AmE /nɔ:rθ/

My conjectures are:

• a or o are lowered in the mouth so that we have /ɑ/ or /ɔ/.
• the mouth becomes less tensed
• the r is very loose
• n in north becomes dental

Some consonants such as n,d,t are usually alveolar in English.
Except that they are replaced by dentals when they are before dental fricatives(th).
Examples: tenth, said this, in the...

What about "r" before "th"?
Examples: Arthur, north, northern.
My conjectures are:
"a" or "o" are lowered in the mouth so that we have ɑ or ɔ .
the mouth becomes less tensed
the "r" is very loose
and "n" in "north" becomes dental!

Some consonants such as n,d,t are usually alveolar in English.
Except that they are replaced by dentals when they are before dental fricatives(th).
Examples: tenth, said this, in the...

What about "r" before "th"?
Examples: Arthur ɑ:θəʳ US ɑ:rθɚ, north nɔ:θ US nɔ:rθ, northern.
My conjectures are:
"a" or "o" are lowered in the mouth so that we have ɑ or ɔ .
the mouth becomes less tensed
the "r" is very loose
and "n" in "north" becomes dental!