charge account - credit extended by a business to a customer. credit account, open account. charge account credit, open-end credit, revolving credit - a consumer credit line that can be used up to a certain limit or paid down at any time. revolving charge account - a charge account that does not have to be paid to zero balance.
Otoacoustic Emissions Otoacoustic emissions (OAEâs) are low level, inaudible sounds produced by the outer hair cells of the inner ear (cochlea). OAEâs can either occur spontaneously or in response to clicks or tones.
There are four types of sounds that the cochlea produces: 1  Spontaneous acoustic emissions - the cochlea produces these sounds spontaneously (not in response to another sound). 2  Transient otoacoustic emissions - produced in response to another sound of short duration (transient).