title: The effect of temporal asymmetry on amplitude modulation detection using pure-tone carriers (L).
abstract: The effect of temporal asymmetry on amplitude modulation detection was studied using sawtooth modulators with rising (ramped) or falling (damped) temporal envelopes within each period of modulation. For pure-tone carriers, damped modulation was more detectable than ramped modulation for a 5-kHz carrier (by a threshold difference of 3.2 dB on average) but not for a 1-kHz carrier. The threshold difference obtained at 5 kHz between the ramped and damped modulators was consistent across modulation rates (8-128 Hz). This carrier frequency dependence suggests that the effect of temporally asymmetry on modulation detection originates from envelope-based, within-channel mechanisms.
authors.affiliation: Department of Speech and Hearing Sciences, Indiana University, Bloomington, Indiana 47405-7000, USA. shen.yi@uci.edu
authors.forename: Yi
authors.initials: Y
authors.lastname: Shen
authors.forename: Jennifer J
authors.initials: JJ
authors.lastname: Lentz
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001301:Audiometry, Pure-Tone; D001306:Auditory Pathways / Q000502:physiology*; D001307:Auditory Perception; D001309:Auditory Threshold; D006801:Humans; D011571:Psychoacoustics; D013997:Time Factors; D013998:Time Perception; D055815:Young Adult