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Top: Mean DPOAE level (Ldp) (circles) and noise level (squares) in dB SPL as a function of L2 in dB SL when f2 = 4 kHz. Bottom: Mean DPOAE level (Ldp) (circles) and noise level (squares) in dB SPL as a function of L2 in dB SL when f2 = 0.5 kHz. In all cases, error bars represent ± 1 SD. In all cases, error bars represent ± 1 SD.
