FO processing and the separation of competing speech signals by listeners with normal hearing and with hearing loss.
FO processing and the separation of competing speech signals by listeners with normal hearing and with hearing loss.
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DOI：
10.1044/jslhr.4106.1294
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发表时间：
1998-12
期刊：
影响因子：
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通讯作者：
V. Summers;M. Leek
中科院分区：
文献类型：
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作者：
V. Summers;M. Leek
听力正常和听力受损的听众进行了测试，以确定F0差异阈值的合成令牌的5个稳态元音。相同的刺激，然后使用在一个并发元音标记任务与并发元音之间的F0差异范围在0和4个元音。最后，在存在具有相同、更高或更低F0的竞争合成语音的情况下，测试合成句子的语音识别。听力正常的听众和听力受损的听众与小F0-歧视（deltaF 0）阈值显示元音标记的改善时，有差异的元音之间的F0的并发元音任务。具有高deltaF 0阈值的受损听众没有从元音之间的F0差异中受益。在组的水平上，听力正常的听众受益于F0的竞争信号之间的差异，同时元音和句子的任务比听力受损的听众。然而，对于个别听众，deltaF 0阈值和改善并发元音标记的基础上F0的差异，只有弱相关的F0为基础的改善性能的句子任务。对于同时元音和句子任务，有证据表明，从竞争信号之间的F0差异中受益的能力随着年龄的增长而下降。
Normal-hearing and hearing-impaired listeners were tested to determine F0 difference limens for synthetic tokens of 5 steady-state vowels. The same stimuli were then used in a concurrent-vowel labeling task with the F0 difference between concurrent vowels ranging between 0 and 4 semitones. Finally, speech recognition was tested for synthetic sentences in the presence of a competing synthetic voice with the same, a higher, or a lower F0. Normal-hearing listeners and hearing-impaired listeners with small F0-discrimination (deltaF0) thresholds showed improvements in vowel labeling when there were differences in F0 between vowels on the concurrent-vowel task. Impaired listeners with high deltaF0 thresholds did not benefit from F0 differences between vowels. At the group level, normal-hearing listeners benefited more than hearing-impaired listeners from F0 differences between competing signals on both the concurrent-vowel and sentence tasks. However, for individual listeners, deltaF0 thresholds and improvements in concurrent-vowel labeling based on F0 differences were only weakly associated with F0-based improvements in performance on the sentence task. For both the concurrent-vowel and sentence tasks, there was evidence that the ability to benefit from F0 differences between competing signals decreases with age.