Goold Brown,
The Grammar of English Grammars
“ Now it is all a mistake, however common, to suppose that our accent, consisting as it does, in stress, enforcement, or "percussion of voice," can ever shorten the syllable on which it is laid; because what increases the quantum of a vocal sound, cannot diminish its length; and a syllable accented will always be found longer as well as louder, than any unaccented one immediately before or after it. Though weak sounds may possibly be protracted, and shorter ones be exploded loudly, it is not the custom of our speech, so to deal with the sounds of syllables. ”
