Hearing test apparatus and method having adaptive artifact rejection

A hearing test device and artifact rejection method are disclosed. The device and method may be used in, for example, distortion product otoacoustic emissions (DPOAE) testing. In one embodiment, the device presents a plurality of stimuli into the ear canal of a test subject, and receives responses from the ear canal. Depending on the noise power of each response received, the response is placed in one of a plurality of buffers or is discarded. The combination of buffers that yields the lowest noise power is then selected. The selected combination of buffers may then be used to calculate a signal to noise ratio, which may be used to determine whether the test has been passed or failed.