"Blind" is to "sighted" as "Deaf" is to..?
What is the opposite of the adjective deaf?
e.g.
The seats close to the interpreter are reserved for the hearing impaired. It is imperative that all [not deaf] people sit in the remaining seats.
Hearing persons should cover it.
The seats close to the signer are reserved for deaf people. It is imperative that all [not deaf] people sit in the remaining seats. might best be replaced with The seats with a clear view [1] of the ASL [2] interpreter are reserved for those who are reading the interpreter's signing [3]. Others are asked to sit elsewhere. After all, [1] visibility, not proximity, is the essential need; [2] not all deaf or hearing-impaired people know ASL, and not all people who know a sign language know ASL; and [3] some people with no hearing impairment know ASL, and like to read it when they have the chance. No reference to hearing impairment need appear in this notice.
people possessing aural capability should work fine.