Noise-band carriers mask age differences in amplitude modulation detection.

Evidence

Schoof and Rosen ( 2014 ) found no significant difference in either processing efficiency or the shape of TMTFs measured with noise-band carriers between young (19–29 years) and older (60–72 years) subjects with near-normal audiograms. It is possible that, with noiseband carriers, amplitude-modulation detection is limited by the inherent fluctuations in the carrier (Dau et al. 1997 ), making it hard to measure the effects of age. — Dijk, Pim van, Physiology, Psychoacoustics and…, 796