FIG. 4.

The contribution of distortion components to the asymmetry. The asymmetry measures of the original noise-delay functions are plotted on the abscissas; the asymmetry measures of approximations of these noise-delay functions are plotted on the ordinates. In both DNLL (circles) and IC (pluses), removing the r₂(τ, φ) and higher components from noise-delay functions produced little change in either the rate asymmetry (A) or the delay asymmetry (B). Removing the IPD-insensitive r₀(τ) component, however, produced responses that were both rate symmetric (C) and delay symmetric (D).