Is there a specific auditory reason for which a labiovelar such as "kʷ" becomes a "p" sound?This could also be applied to the change in Latin from "duellum" to "bellum"
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1The title sounded like the development from [w] to [β̞] to me, because [w] is equally labial and velar. [kʷ] has velar closure but only labial approximation.– unknown_person_1000Dec 30, 2018 at 12:40
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@tobiornottobi You're right,I fixed it– X30MarcoDec 30, 2018 at 12:45
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1 Answer
I would say you hear the labialization (I think a lower F2) and you hear the plosion. These features are shared with [b] and [p]. The lack of voicing of [k] is further shared with [p] and the voicing of [d] is shared with [b].
answered Dec 30, 2018 at 12:35
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Low F2 is only observed with rounded labial. This can only be explained with an articulatory analysis, where some distinctive features are lost because of the principle of least effort. Dec 30, 2018 at 17:43
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@amegnunsen As far as I know, lip rounding also lowers the F2 of front vowels etc. Dec 30, 2018 at 18:27
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1Yes, I am saying the same thing. You are talking about [p] and [b], but these consonants don't have rounded lips. Dec 30, 2018 at 18:51
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1@amegnunsen Ah, okay. That's a good point. They don't have rounded lips but closed lips. And you are saying, closing the lips fully does not lead to a lowered F2. What I assumed was that lip rounding (especially compressed) and lip closure had similar acoustic properties and that after breaking the closure the lips are likely to not be spread. I could be wrong, though. Dec 30, 2018 at 19:05
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1Perceptually, I don't think so. pʷ/bʷ are common sounds, so kʷ will become one of them instead of p/b. Dec 30, 2018 at 19:30