Help originating a vowel system?

[Darren]

There's a nice shift from Occitan:

(starting with /i u e o ɛ ɔ a/)
u o → y ɔ
e → œ (!!)
(leaving /i u ɛ œ ɔ a/)

And another one from New Zealand English

ɪ ɛ æ ʌ → ə ɪ ɛ ɐ

[Neonnaut]

I can’t believe no-one has yet linked this guide from the old board. It’s a great overview of what kinds of vowel systems are found in natlangs.

With how much people keep referencing Alice's work here despite it having succumbed to linkrot multiple times I feel like it needs to be better preserved, perhaps on zompist.com, with some commentary and redaction - I distinctly remember some criticism of the practice of giving "the short vowel system of X" as an example of a particular vowel system "shape" because vowels don't exist in a vacuum like that.

And once again my past comes back to haunt me. Did nobody notice that Lass's Phonology got there first?

I've had this page up on my site: https://neonnaut.neocities.org/vowel_systems. Good to know who the author is. I edited the "one vowel" section and gave the language name of S4b