Most online dictionaries have phonetic transcriptions. Try http://www.freedictionary.com for example.
How to know that the vowel in a given word is stressed or not?
Is there any online dictionary of the phonetic trnascription?
thank you in advance
Most dictionaries mark stress in some way; confusingly some follow the IPA in putting ' before the stressed syllable, and some put the ' after it. Others use various sorts of text enhancement (bold, italic, small caps...). Find one that uses the IPA, and stick to it.
I am talking about "phonetic" not "phonemic" transcription.
I do not know what exactly you are speaking about, but in the following dicitonary:
Computer - Definition and More from the Free Merriam-Webster Dictionary
transcription is presented like this:
noun, often attributive \kəm-ˈpyŁ-tər\
It is not IPA (International Phonetic Alphabet) style, it's American way to transcribe words.
Accordingly, pronunciation described is American.
And this one uses IPA and the British pronunciation:
Last edited by Jack8rkin; 12-Apr-2011 at 13:10.
The OP is not able to formulate a well-formulated question, well-formulated to the audience.
Maybe, he is asking: (a) how to predict stress in a word; (b) what is the phonetic realization of underlying stressed vowels.
The popular answer to (a): check a dictionary. How on earth can one remember stress for, say, 100,000 words? Here, English phonology provides a set of heuristics or thumb rules that are far less than 100,000.
About (b): phonetic realization of graphemes. Yes, phonology helps here. For instance, the grapheme "a" can have MAY, CAT, etc vowel realizations when it is stressed.