Abstract
The influence of the ripple width on the ripple density resolution was investigated with two paradigms: (i) discrimination between a rippled test signal and a rippled reference signal with opposite ripple phases and (ii) discrimination between a rippled test signal and a flat reference signal. The ripple equivalent rectangular bandwidth (ERB) was specified as a percentage of ripple frequency spacing. The narrower the width, the higher the resolution was. For a rippled reference signal, the resolution was from 15.1 ripples/oct at a ripple width of 9% to 8.1 ripples/oct at 64%. For a flat reference signal, the resolution was from 85 ripples/oct at a ripple width of 9% to 9.3 ripples/oct at a ripple width of 64%. The result can be explained by the use of spectral cues for distinguishing between a rippled test and a rippled reference signal and temporal cues for distinguishing between a rippled test ant a flat reference signal.
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