Comparison of predicted immittance measures for ears with normal middle ear, fluid in the middle (x_A = 0.2), and negative pressure difference between middle ear and ear canal (Δp = −2500 Pa). Left column: acoustic input impedance at the eardrum; second column: input impedance of the ear; third column: magnitude and group delay of the reflectance; right column top: energy reflectance; right column bottom: energy absorbance.