Shafiro Valeriy, Gygi Brian
Rush University Medical Center, Department of Communication Disorders and Sciences, 203 Senn, 1653 W. Congress Parkway, Chicago, Illinois 60612, USA.
J Acoust Soc Am. 2007 Dec;122(6):EL229-35. doi: 10.1121/1.2806174.
Detection and identification of concurrently spoken key words was investigated using the Coordinate Response Measure corpus. On every trial, listeners first had to explicitly detect callsign keywords in a multi-talker stimulus (divided attention), and, if all callsigns were present, identify the color and number words produced by one of the talkers (selective attention). Increasing the number of concurrent talkers and the number of callsigns to be detected each had a marked negative effect on detection and identification performance. These findings indicate that, when memory involvement is limited, listeners cannot reliably detect more than two concurrently spoken words in diotic listening.
使用坐标反应测量语料库对同时说出的关键词进行检测和识别。在每次试验中，听众首先必须在多说话者刺激中明确检测呼号关键词（分散注意力），并且，如果所有呼号都存在，则识别其中一个说话者说出的颜色和数字单词（选择性注意力）。增加同时说话者的数量以及要检测的呼号数量，对检测和识别性能均有显著的负面影响。这些发现表明，当记忆参与有限时，听众在双耳聆听中无法可靠地检测出超过两个同时说出的单词。
