Starbeam wrote: ↑Sun Jul 31, 2022 11:14 am
Trying to parse something about English dialects:
1. How does the NURSE vowel differ from the LETTER vowel, in dialects that have it?
I think the fundamental point here is that NURSE is part of the unreduced vowel system, whereas LETTER is part of the reduced vowel system and almost always occurs in unstressed syllables. They may or may not have very similar qualities, but NURSE will be longer as you'd expect from an unreduced vowel.
NURSE is often rounded; I think this is especially the case in the southern hemisphere accents, but it is in mine too, and I don't have any influence from AusE or NZE that I'm aware of. Some northern English accents, e.g. Liverpool, have lost the NURSE/SQUARE distinction so that e.g.
Blur and
Blair are merged.
LETTER at the end of a word can be very open, and sometimes quite back; some regional EngE speech has something which almost sounds like [ɒ] there. (This is not necessarily to do with the historic /r/; it occurs in the COMMA lexical set as well.)
2. Is their a three way distinction of the vowels in BOTHER, THOUGHT, and PALM? Is this consistently maintained, or does one or another vowel (like the one in TRAP) get lost?
As others have said, yes these distinctions are essentially universal in England and in the southern hemisphere accents. Typically THOUGHT and PALM are long vowels whereas LOT and TRAP are short vowels. In some areas they fall into natural long/short pairs (for examples Darren's Australian accent) whereas that's less obvious in typical accents in England where the quality of PALM/START is somewhere in between TRAP, LOT and STRUT and THOUGHT tends to be a bit higher than LOT.