Detection of multicomponent signals: effect of difference in level between components |
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Authors: | Dubois Françoise Meunier Sabine Rabau Guy Poisson Franck Guyader Gaël |
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Affiliation: | Laboratoire deMe?canique et d'Acoustique, Unite? Propre de Recherche 7051, Centre National de la Recherche Scientifique, 31 chemin Joseph-Aiguier, 13402 Marseille, France. dubois@lma.cnrs-mrs.fr |
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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. |
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