A hearing aid takes an average speech level of 60 dB and amplifies it so that the user hears the speech at 85 dB. What is the gain of this hearing aid in dB?

Analog hearing aids sample sound waves and store sound information as binary digits (bits). 

T.K. is a 4-month-old boy. T.K. did not pass his newborn hearing screening with OAE or ABR. His family reports that a grandparent, uncle, and cousin have had significant hearing loss since birth, with no other co-morbidities. T.K. was seen for a diagnostic ABR. His audiogram (based on the ABR) and tympanogram are below. OAEs were absent in the right and left ear. What is your best diagnosis for T.K.?  

Which style of hearing aid are children generally fit with it?

Hearing aids restore normal hearing. 

What types of phonemes are inaudible to this person without amplification?

Any hearing loss can be fit with any hearing aid size or style.

This hearing loss is due to:

The most common cause of genetic hearing loss is: 

The most common cause of sensorineural hearing loss is: