title: Detection of multicomponent signals: effect of difference in level between components.
abstract: The detection of multicomponent signals for which the components are not equidetectable is precisely investigated as a function of the level difference ΔL(i∕j) between components. The detection thresholds are determined for a seven-tone complex signal with random starting phases masked by white noise. Level differences between the components are examined. A model for non-equidetectable conditions based on the statistical summation model is described. The improvement in detection is calculated from the level difference between components that is related to the thresholds for single components. The model predictions are in accordance with the experimental results.
authors.affiliation: Laboratoire deMécanique et d'Acoustique, Unité Propre de Recherche 7051, Centre National de la Recherche Scientifique, 31 chemin Joseph-Aiguier, 13402 Marseille, France. dubois@lma.cnrs-mrs.fr
authors.forename: Françoise
authors.initials: F
authors.lastname: Dubois
authors.forename: Sabine
authors.initials: S
authors.lastname: Meunier
authors.forename: Guy
authors.initials: G
authors.lastname: Rabau
authors.forename: Franck
authors.initials: F
authors.lastname: Poisson
authors.forename: Gaël
authors.initials: G
authors.lastname: Guyader
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001299:Audiometry; D001307:Auditory Perception; D001309:Auditory Threshold; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015233:Models, Statistical; D009622:Noise / Q000009:adverse effects*; D010470:Perceptual Masking; D011594:Psychometrics; D017603:Signal Detection, Psychological; D055815:Young Adult