weak noises generated by the cochlea which are documented with a microphone situated in the external auditory meatus. Spontaneous otoacoustic secretions (SOAE's) are documented in lieu of externally shown noise. Evoked otoacoustic emissions (EOAE's) are reactions to noises, commonly transients, maintained pure tones, or couples of tones. Commonly referred to as cochlear secretions.
OTOACOUSTIC EMISSIONS (OAES): "Otoacoustic emissions were so weak in the mammalian subjects that the microphones nearly failed to pick up on them."