Fast amplitude modulations skip cochlear compression and get enhanced coding
Evidence
In gain control terms, the linearization that occurs at higher beat rates occurs because the instantaneous gain becomes smoothened, or low-pass filtered, with respect to the magnitude fluctuations in the stimulus. In terms of peripheral processing, the linearization corresponds to an enhanced coding, or decompression, of rapid amplitude modulations. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3625