Another recently reported method, emitted pressure level (EPL) estimates the initial outgoing OAE pressure wave at the eardrum from measurements of the conventional OAE, allowing one to separate the emitted OAE from the many reflections trapped in the ear canal (Charaziak and Shera, 2017). When DPOAEs are recorded using EPL, their variation with probe location was shown to decrease to the test-retest repeatability of measurements obtained at similar probe positions. EPL is thus one promising way to reduce the variability of OAE measurements and improve their ability to detect cochlear changes.