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Characteristics of the six prototype listening situations (PLS). Circles indicate the eight-loudspeaker array surrounding the participant (center). Black circles indicate location of the speech. Eye graphic indicates presence of visual cues. For PLS1 to PLS3, speech and noise were presented at 60 and 40 dBA, respectively. For PLS4 to PLS6, speech and noise were presented at 68 and 61 dBA, respectively.
