Carney A E, Beachler C R
J Acoust Soc Am. 1986 Jan;79(1):131-40. doi: 10.1121/1.393636.
The recognition of three suprasegmental aspects of speech--the number of syllables in a word, the stress pattern of a word, and rising or falling intonation patterns--through a single-channel tactile device and through a 24-channel tactile vocoder, using two groups of normal-hearing subjects, was compared. All subjects received an initial pretest on three recognition tasks, one for each prosodic feature. Half the subjects from each group then received 12 h of training with feedback on the tasks and stimuli used in the pretest. All subjects received a post-test which contained physically different stimuli from those previously tested. Performance was significantly better on the syllable-number and syllabic stress tasks with the single-channel than with the multichannel device on both the pre- and post-tests; no difference was found for the intonation task. Performance on the post-test was poorer for all trained subjects compared to their final training results, suggesting that cues learned in training were not readily transferable to new stimuli, even those with similar prosodic characteristics. Overall, the results provide support for the notion that certain prosodic features of speech may be conveyed more readily when the waveform envelope is preserved.
通过一个单通道触觉设备和一个24通道触觉声码器，对两组听力正常的受试者识别言语的三个超音段方面——单词中的音节数量、单词的重音模式以及升调或降调模式——的情况进行了比较。所有受试者都接受了关于三项识别任务的初始预测试，每项任务针对一种韵律特征。然后，每组中的一半受试者接受了12小时的训练，并得到了关于预测试中使用的任务和刺激的反馈。所有受试者都接受了后测试，后测试中的刺激在物理上与之前测试的不同。在预测试和后测试中，单通道设备在音节数量和音节重音任务上的表现均显著优于多通道设备；语调任务方面未发现差异。与最终训练结果相比，所有接受训练的受试者在后测试中的表现都更差，这表明在训练中学习到的线索不容易转移到新的刺激上，即使是那些具有相似韵律特征的刺激。总体而言，这些结果支持了这样一种观点，即当波形包络得以保留时，言语的某些韵律特征可能更容易被传达。
