Stimulus features affecting speech recognition in a two-talker masker

Large individual differences in performance have been observed for speech recognition in the presence of two-talker speech maskers. Moreover, two-talker masker samples appear to vary in masking effectiveness. These two observations suggest that (1) listeners vary in the extent to which they take advantage of stimulus features that aid in the segregation of target from masker speech and (2) maskers vary in the extent to which salient stimulus features are available that aid in the segregation of target from masker speech. Stimulus talker variability and individual listener variability are explored across two experiments. The first experiment evaluates differences between talkers based on vocal characteristics. These characteristics include fundamental frequency, pitch variability, and cadence. Additionally, listeners are asked to rank each individual competing talker’s voice with respect to similarity to the target talker’s voice. The second experiment will explore linguistic differences in the competing s...

在存在两个说话者的语音掩蔽器的情况下，人们观察到语音识别的表现存在很大的个体差异。此外，两个说话者的掩蔽器样本在掩蔽效果上似乎有所不同。这两个观察结果表明：（1）听者在利用有助于将目标语音与掩蔽语音分离的刺激特征的程度上存在差异；（2）掩蔽器在有助于将目标语音与掩蔽语音分离的显著刺激特征的可用性程度上存在差异。通过两个实验探究刺激说话者的变异性和个体听者的变异性。第一个实验根据发声特征评估说话者之间的差异。这些特征包括基频、音高变异性和节奏。此外，要求听者根据与目标说话者声音的相似性对每个竞争说话者的声音进行排序。第二个实验将探究竞争……中的语言差异