Re: Trills (was: "Proposed IPA" characters not in Unicode)
|From:||Paul Roser <pkroser@...>|
|Date:||Monday, January 22, 2007, 2:49|
On Fri, 19 Jan 2007 21:52:07 -0600, Eric Christopherson <rakko@...>
>On Jan 19, 2007, at 5:06 AM, John Vertical wrote:
>> Eric Christopherson wrote:
>>> What's being trilled, then, when you pronounce a uvular trill?
>>> (I've never been clear on why some languages have a uvular trill
>>> or fricative or approximant but not a velar one.)
>> The uvula. Can't generalize that to just any POA, can you?
>Ah -- so with say a coronal trill, the tongue is moving against the
>roof of the mouth, but in a uvular trill the uvula is moving and the
>tongue stays stationary?
The few detailed descriptions I've read describe the back of the tongue
forming a groove in which the uvula vibrates.
Trills occur when the thing that is trilled is held just loosely enough that
air-pressure (the Bernouilli effect) can cause it to vibrate. Four things
(not counting the glottis or aryepilgottal folds) can trill: the lips,
tongue tip, tongue edge (a 'lateral trill', described by Catford, but
otherwie not often mentioned in the phonetic literature), and the uvula.
For labial trills I think there are three or four possibilities:
* bilabial (both lips vibrate);
* labiodental (lateral channel cause upper lip to vibrate against teeth)
* linguolabial (lower kip vibrates against underside of tongue)
* labiolingual (upper lip vibrates against tongue tip/blade - though this
might also actually be an interlabial trill, where the tongue tip protrudes
between the lips and vibrates)
The last two are variations of the Bronx cheer or raspberry.