Hi, Thanks for writing in. It appears that you had a sever attack of meningitis that has left you with cognitive difficulties and slight nerve deafness. While nerve regeneration usually does not happen but since you do not have complete deafness, it is possible that you could still use an amplification device that will make sounds heard louder by you. It is important to get further hearing tests done and discuss autoimmune encephalitis with your doctor. Since there is temporal encephalomalacia, that part of brain related with memory has been affected. You can try to attend neuro cognitive rehabilitation clinics and enhance your memory capabilities. There are many methods available as suitable to your condition and it can take few months to learn new techniques to preserve your short term memory.