Title: The role of monaural spectral cues in modeling the precedence effect
Abstract: Various evidence suggests that the precedence effect may generalize to spatial locations of sound source and echo that minimize binaural information available to the listener. In these situations, it is likely that monaural spectral cues to the direction of the source play an important role in determining the apparent direction of the source+echo composite. Here a model of directional sound localization that incorporates both binaural temporal cues and monaural spectral cues is described and evaluated. The binaural portion of the model relies on interaural cross-correlation to extract binaural cues to lateral direction. The monaural spectral portion uses a spectral correlation metric to evaluate the similarity of the incoming sound spectrum with a catalog of spectral shapes resulting from a listener’s own head-related transfer functions (HRTFs) to known source directions. The model was used to predict sound localization performance of seven human listeners in 16 spatial configurations of source and echo (presented using virtual auditory space techniques with individualized HRTFs), including six configurations where binaural information was minimized (four on the median plane). In general, precedence effects that relied primarily on spectral cue information were considerably less predictable than those that relied on binaural information. [Work supported by NIDCD.]
Publication Year: 2006
Publication Date: 2006-05-01
Language: en
Type: article
Indexed In: ['crossref']
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