Languages with devoiced vowels/

Brazilian Portuguese u/i at the end of words after voieless consonants
Japanese u/i between voiceless consonants

Jims,

Your post is not at all clear.

First of all, could you provide some examples of devoiced voicless consonants in Japanese and Brazlian Portuguese?

Secondly, what is it about devoiced voicless consonants that you wish to discuss?

Lastly, the topic may be too specialized for this forum.

Portuguese - sucesso
japanese - desu ka, karasu, yusuke, kyosuke fukai shikon

I wanna know more languages witrh them

Japanese only devoices vowels when whispering. Just like Quebecian French.

No, it is a rule.
Have you listened enougj Japanese music?

No, and excuse me but I trust an encyclopedia more than you.

Hey, don't you trust me, a Japanese language teacher
lol.

Encyclopedia knows nothing about the Japanese language.
I ve been a Japanese teacher since 1992 and I can't believe I can be defeated by an encyclopedia

On trouve des voyelles sourdes (ou dévoisées) dans toutes les langues : il suffit de murmurer les voyelles.

Well, fact is that I can't check if you're a 'Japanese teacher' , I can check the encyclopedia.

Well, fact os that you have no argument on how to beat me, but if you feel happy, pretend that I am not a teacher
lol...
and encyclopedia boy check t
http://www.sf.airnet.ne.jp/~ts/japanese/message/jpnEsITHLrHErFGbNMT.html

Mr. Encyclopedia... learn some japanese and not some encyclopedia
than you.
MR. Encyclopedia, do you want me to go your home to prove tham I am a Japanese teacher

Oh I wonder who's trying to impersonate me...

well, they can't even get your name right!

Sander, let me suck your dick