20.
Phonotactics II: Syllable structure
We
have just had some fun identifying languages, or having computers help us
do so, mainly by examining the way in which letters, and indirectly, phonemes,
combine with each other. English of course also has its own rules regarding
which sequences of phonemes are permissible in a syllable. Observing how phonemes
can and cannot combine will help us to better understand the phonological
structure of English, though it also has more practical applications, such
as in poetry and song writing.
You will have noticed when doing the exercises
for chapter 4 of the Ladefoged text that some vowel phonemes are more restricted
than others as regards which consonant sounds may follow them in the same
syllable. There are many reasons for this; to uncover some of these reasons
you would have to look back into the history of the development of the English
language, something that is beyond the scope of our investigations for the
time being (but if you have the time and interest, here
is one place to start). For now we will just attempt to understand the current
situation as it is, without trying to offer any explanations for it. The first
step toward such an understanding is acquiring a clear notion of the structure
of a syllable.
A syllable can be divided into two parts: onset
(in Chinese: 節首輔音 jiéshŏu fŭyīn, or in traditional
terms 聲母 shēng mŭ) and rhyme (韻 yùn or 韻母
yùnmŭ). A rhyme may be further divided into a nucleus
(核心 héxīn) and a coda (音結尾 yīnjiéwĕi).
In Chinese phonology, the term 介音 jièyīn is also used, to refer
to an [i] or [y] glide before a main vowel, as in the [i] in 天 tian1; compare
to 攤 tan1, which has only a main vowel and no 介音 rising glide.
Follow this link for a more detailed explanation
of English syllable structure:
http://www.sil.org/linguistics/GlossaryOfLinguisticTerms/WhatIsASyllable.htm
Click on the following link for a brief explanation
of sonority and the sonority
scale, referred to in the above Web page. You can find more detailed information
on sonority on p. 245-247 of the Ladefoged/Johnson text.
Here's a useful 22-slide slideshow on syllable
structure, phonotactics and coarticulation by Eka Andriyani, Lecturer at Sekolah
Tinggi Bahasa Asing (STBA) LIA, Jakarta:
http://www.slideshare.net/Andriyanieka12/9-phonotactics-coarticulation
Some phonemes are much more common in certain
positions in a syllable than in others. Here is a very interesting and informative
presentation entitled "Graphing the distribution of English letters towards
the beginning, middle or end of words":
http://www.prooffreader.com/2014/05/graphing-distribution-of-english.html
It is based on spelling, i.e. letters, rather than phonemes, but is nevertheless
a very useful reference.
Here is a whole page full of all kinds of fascinating
things about English words and spelling, like word and letter frequency counts,
bi-grams and N-grams:
http://norvig.com/mayzner.html
Please read through the material at the above
sites until you fully understand it and feel comfortable with it. The issue
of syllable structure is mainly a phonological rather than phonetic one, but
it is one phoneticians need a good understanding of as well. This understanding
will be helpful to us in the next pages, not to mention in the second semester
of this course!
Next: Phonotactics III (with rhyming dictionary)
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