+0

Can't think of a good adjective.

+1

You may be thinking of the expression "slurred speech".

CJ

Comments  

I think you mean "slurpy" or "a gulping sound".

Best wishes,

Joseph

Students: Are you brave enough to let our tutors analyse your pronunciation?

Your question is not entirely clear. If you're talking about the deterioration in the quality of sound, then try:

indistinct, muffled, fuzzy, blurry

 CalifJim's reply was promoted to an answer.