On 11-Aug-2004, Mxsmanic (Email Removed)
wrote in message (Email Removed):
"It is not true for English in Los Angeles, where ... same phonetic length; the difference is almost entirely in quality."
"I agree; I've noticed the same thing in American English, which makes the incorrect phonetic transcriptions used in so many English coursebooks even more misleading."
Agreed, if such coursebooks claim to be representing American pronunciation. Apparently length is indeed an inherent part of vowel phonemes in several important British dialects, where /i/ ~ (i:) is in fact longer than /I/ ~ (I).
"Like other vowels, both do vary in length depending on the surrounding segments, though."
"Yes, but it's irrelevant to meaning."
Depends on what you mean by "meaning". :-) It's certainly relevant to reducing one's accent, which is what tsj is trying to do. In my American accent, pronouncing with a vowel as long as that which normally occurs in (pronounced in isolation) would sound very weird; many such mispronunciations of this type could easily cause comprehension problems.
Jim Heckman