Brungart Douglas S, Simpson Brian D
Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433-7901, USA.
Percept Psychophys. 2007 Jan;69(1):79-91. doi: 10.3758/bf03194455.
A priori information about the location of the target talker plays a critical'role in cocktailparty listening tasks, but little is known about the influence of imperfect spatial information in situations in which the listener has some knowledge about the location of the target speech but does not know its exact location prior to hearing the stimulus. In this study, spatial uncertainty was varied by adjusting the probability that the target talker in a multitalker stimulus would change locations at the end of each trial. The results show that listeners can adapt their strategies according to the statistical properties of a dynamic acoustic environment but that this adaptation is a relatively slow process that may require dozens of trials to complete.
关于目标说话者位置的先验信息在鸡尾酒会式听力任务中起着关键作用，但对于在听者对目标语音位置有所了解但在听到刺激之前不知道其确切位置的情况下，不完美空间信息的影响却知之甚少。在本研究中，通过调整多说话者刺激中目标说话者在每次试验结束时改变位置的概率来改变空间不确定性。结果表明，听者可以根据动态声学环境的统计特性调整其策略，但这种调整是一个相对缓慢的过程，可能需要几十次试验才能完成。
