Culling, John Francis ![]() |
Abstract
Three experiments investigated the roles of interaural correlation (ρ) and of the monaural power spectrum in the detection and discrimination of narrow-band-noise signals (462–539 Hz) in broadband maskers (0–3 kHz). The power and ρ of the target band were independently controlled, while the flanking noise was fixed and diotic. Experiments 1 and 2 involved ρ and power values that would be produced by specific values of signal-to-noise ratio (SNR) in the NoSπ binaural configuration. Listeners were required to discriminate different SNRs via a 2I-FC loudness-discrimination task. At low reference SNRs, changes in ρ fully accounted for listeners’ performance, but as reference SNR increased, additional energy in the target band played an increasing role. Experiment 2 showed that at these higher SNRs the combination of information from the power spectrum and ρ was superadditive and could not be explained by simple signal-detection models. The equalization-cancellation (EC) theory would explain these data using the output from interaural cancellation, Y, rather than ρ. Experiment 3 attempted to foil binaural processing, by fixing either ρ or Y across intervals. Consistent with EC theory, when Y was fixed, the contribution of the binaural system appeared negligible, while fixing ρ did not have this effect.
Item Type: | Article |
---|---|
Status: | Published |
Schools: | Psychology |
Uncontrolled Keywords: | acoustic noise; cognition; correlation methods; hearing; neurophysiology |
Publisher: | Acoustical Society of America |
ISSN: | 0001-4966 |
Last Modified: | 18 Oct 2022 13:23 |
URI: | https://orca.cardiff.ac.uk/id/eprint/13736 |
Citation Data
Cited 23 times in Scopus. View in Scopus. Powered By Scopus® Data
Actions (repository staff only)
![]() |
Edit Item |