Subject: Re: High-frequency hearing From: at <ballasAIC.NRL.NAVY.MIL> Date: Thu, 30 Mar 1995 10:11:04 ESTI'll keep this short-- We know that difference tones can be produced by middle ear nonlinearities and have perceptual effects. I have always wondered about possible generation of (low frequency) difference tones from very high frequencies. Does the middle ear freqency response preclude this? jim