Abstract
Spectro-temporal regions with a high local signal-to-noise ratio (SNR), so-called glimpses, play a vital role in the intelligibility of target speech against fluctuating interferers (e.g., concurrent speech signals). These glimpses provide access to reliable information on local signal properties. In a situation with spatially separated speech sources, a spatial advantage relative to a situation with collocated sources can be observed. This advantage is generally conceived to be composed of a monaural contribution due to better-ear listening, and a binaural contribution due to either binaural unmasking or segregation supported by spatial cues. A previous study [Schoenmaker and van de Par (2016), Adv. Exp. Med. Biol. 894, 73-81] provided evidence against the use of binaural unmasking and in favor of spatial segregation based on spatial cues extracted from glimpses. New data suggest that the better-ear contribution relies on the amount of target speech in glimpses, rather than the global SNR of the masked t...
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