Comparison of two single-channel vibrotactile aids for the hearing-impaired.
Comparison of two single-channel vibrotactile aids for the hearing-impaired.
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两种用于听障人士的单通道振动触觉辅助器的比较。
DOI：
10.1044/jshr.3201.83
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
Russell,AF
中科院分区：
文献类型：
--
作者：
Weisenberger,JM;Russell,AF
两个市售的单通道振动触觉艾滋病，旨在传输信息的人谁不能通过传统的放大感知这种刺激的声音刺激，进行了比较，在一些任务与相同的主题。这两种设备都采用了戴在手腕上的振动传感器。一种装置通过使用它来调制250 Hz载波振动（调幅或AM信号）的幅度来表示波形包络的特性。另一个设备呈现并调幅宽带信号，其频谱特性保留了关于信号的信息。受试者完成了几项任务。在某些任务（声音检测，环境声音识别，音节节奏和压力分类）的信息的包络的刺激预计是足够的良好的性能。在其他方面（语音识别），预期需要关于信号频谱的频谱精细结构的额外信息以获得良好性能。结果表明，受试者在所有任务中都使用两种设备进行了重复测试，这表明他们没有利用更复杂信号中的光谱信息。
Two commercially available single-channel vibrotactile aids, designed to transmit information about acoustic stimuli to persons who cannot perceive such stimuli through conventional amplification, were compared in a number of tasks with the same subjects. Both devices employed a vibratory transducer worn on the wrist. One device represented characteristics of the envelope of the waveform by using it to modulate the amplitude of a 250-Hz carrier vibration (an amplitude-modulated, or AM, signal). The other device presented and amplitude-modulated a broad-band signal whose spectral characteristics preserved information about the signal. Subjects performed several tasks. On some tasks (sound detection, environmental sound identification, syllable rhythm and stress categorization) information about the envelope of the stimulus was expected to be sufficient for good performance. On others (speech sound recognition) additional information about the spectral fine structure of the signal spectrum was anticipated to be required for good performance. Results indicated that the subjects performed comparably with both devices on all tasks, suggesting that they did not make use of the spectral information available in the more complex signal.