I think that this sound "qué" means the infinitive verb form to "querer" to want. Ela quer dormir. Also you can heard this sound when you contract 2 sounds. O que é aquilo? (sounds like O que qué aquilo) means What's that?

Basically, "que" is used in Portuguese to link to sentences (1). In this case, it's the equivalent to "that" in English. On the other hand, "quê" (there's no "qué" in Portuguese) is used only on questions in which you use only the interrogative pronoun is used. Commonly used to express surprise (2) or to ask to repeat what has just been said (3). Example: (a) O quê?! Eu não acredito que seu ela está grávida! (What?! I can't believe that she's pregnant!); (b) O quê (3)?! Não entendi o que (1) você disse! .... I hope I have helped you. Good luck with your studies!

There is a difference: you have que and quê. Que without the stress means that, and in some cases may have other meanings. Quê is the particle we use for questioning things, e.g. "O quê?"/ "Vai fazer o quê?". Nonetheless, if you ask someone what one's going to do, you say "o que é que vai fazer?". In this case, you don't use the stressed particle.

there's no diference, vikas! this worl "qué" i think is spanish, and "que" is like "that" example: is THAT i wanna "é o QUE eu quero" hope i helped you, please help me too, be my teacher!!! lol my facebook adress is www.facebook.com/trajanoeloi add me plz!