The Biometric Potential of Transient Otoacoustic Emissions

Whilst the hearing capabilities of the ear are well known and extensively studied, less well known is the fact that the ear can produce sounds. These faint sounds are called otoacoustic emissions and are an involuntary feature of the biomechanical system employed to hear low amplitude sounds. Several distinct types of emission are known; of these, one particular type, Transient Otoacoustic Emissions (TEOAEs), shows potential as a biometric.