Similarity of spectral resolvability in chinchillas and human listeners based on phase discrimination

Abstract

Phase discrimination was measured in a "go/no-go" behavioral task for chinchillas and human listeners in order to compare spectral resolvability between the two groups. Tone complexes comprised a 250-Hz fundamental frequency with N consecutive higher harmonics, and subjects discriminated the cosine-phase complex from a random-phase complex. Values of d' increased as N increased and were similar between chinchillas and human listeners. Values of the criterion for each N condition were also similar between chinchillas and humans. The results suggest that spectral resolvability is likely to be similar for the two groups. © 2005 Acoustical Society of America.