System and method for the measurement of evoked otoacoustic emissions

摘要: A system and method for using double-evoked otoacoustic emission (2EOAE) signals to elicit an evoked response from the cochlea. three sample stimulus includes a first signal, time delayed second signal superposition of signals. The delay is selected be less than maximum latency cochlear emission. Each elicits cochlea that include linear response. eliminated by subtracting individual signal. One class arises when scaled version can click signals, chirp like. Chirp used mimic classical distortion product (DP) responses. may presented single acoustic source or separate sources. With appropriate selection delays, 3 greatly reduce nonlinear due probe distortion. two sources, virtually eliminated. also noise coherence measurement determine relative levels caused random as opposed real-time artifact rejection technique simplifies collection data.