Ooooo! It's the goosonomia episoode! Yes, in the eleventh instalment of Glossonomia, Phil and Eric talk for a very long time (1:36) about the [u] vowel. In it, we talk about the evolution of the /u/ sound, and how historical /u/ turned into /a\u028a/(as in "house"), while historical /o\u02d0/ turned into /u/ (as in "room").
We also discuss:
\t\u2022\tgoose fronting, especially in California, but also in South Africa
\t\u2022\tyod, and its use in /ju/ and /j\u028a/
\t\u2022\tyod dropping after coronals, as in "tune, duke, nuke, Luke, suit"
\t\u2022\tyod coalescence in accents like Cockney (/tju/ becomes [t\u0283u] for example)
\t\u2022\tyod rhoticization in AAVE
\t\u2022\tthe "yew-hew" merger in places like NYC, Philly and Cork, Ireland
Articles referred to in our conversation:
\t\u2022\tChanges in Progress in Canadian English: Yod Dropping
\t\u2022\tA Majority Sound Change in a Minority Community: /u/ Fronting in Chicano English by Carmen Fought
\t\u2022\tSocio-phonetics and social change: Deracialisation of the GOOSE vowel in South African English by Rajend Mesthrie
The Great Vowel Push Chain Shift, from J.C. Wells' Accents of English
Diagram showing how, when /o/ is fronting in RP, /\u0254/ rises and /u/ is fronted, also from Accents of English.