Thanks for writing to H.C.M.
By your query I came to Know that you are having Eustachian tube dysfunction
, and this is keeping your middle ear in negative pressure and thus by retacting ear drum which results in ECHO of spoken sound.
This usually happens whenever there is cold, sore throat
is already giving infection to pharynx and in the pharynx lies the opening of eustachian tube.
To confirm it and to manage it you should do-
1- X-Ray Paranasal sinuses
2- Culture and sensitivity of throat swab.
Till you are in waiting for specialist you may take-
2- anti hitaminic.
3- Steam inhalation.
4- Don't put any ear drop
in ear, & keep ear clean and dry.
Hope this will help you.