Recognition of synthetic speech by hearing-impaired elderly listeners.
Recognition of synthetic speech by hearing-impaired elderly listeners.
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听力受损的老年听众对合成语音的识别。
DOI：
10.1044/jshr.3405.1180
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
Pisoni,DB
中科院分区：
文献类型：
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作者：
Humes,LE;Nelson,KJ;Pisoni,DB
使用自然语音和两种形式的合成语音（DECtalk 和 Votrax）记录的修改韵律测试（MRT）用于测量开放集和封闭集语音识别性能。将听力受损的老年听众的表现与两组听力正常的年轻成年人进行比较，一组在安静的情况下聆听，另一组在旨在模拟老年人周围听力损失的频谱形状噪声背景下聆听。与所有三个主题组的自然语音或 DECtalk 合成语音相比，Votrax 合成语音的语音识别能力显着下降。对于老年听障听众或模拟听力损失的年轻听众来说，自然语音和 DECtalk 语音的表现没有差异。安静聆听时听力正常的年轻人的表现优于其他两组，但模拟听力损失的年轻听众和听力受损的老年听众之间的表现没有差异。当将合成语音的闭集识别与其开放集识别进行比较时，听力受损的老年人从刺激/反应不确定性的减少中获得的收益与两个年轻群体一样多。最后，在老年听力障碍听众中，语音识别性能与听力敏感度呈负相关，但不同说话者条件下的得分呈正相关。那些听力损失最严重的听众理解语音的难度最大，而那些理解自然语音最困难的听众在理解合成语音时也遇到最大的困难。
The Modified Rhyme Test (MRT), recorded using natural speech and two forms of synthetic speech, DECtalk and Votrax, was used to measure both open-set and closed-set speech-recognition performance. Performance of hearing-impaired elderly listeners was compared to two groups of young normal-hearing adults, one listening in quiet, and the other listening in a background of spectrally shaped noise designed to simulate the peripheral hearing loss of the elderly. Votrax synthetic speech yielded significant decrements in speech recognition compared to either natural or DECtalk synthetic speech for all three subject groups. There were no differences in performance between natural speech and DECtalk speech for the elderly hearing-impaired listeners or the young listeners with simulated hearing loss. The normal-hearing young adults listening in quiet out-performed both of the other groups, but there were no differences in performance between the young listeners with simulated hearing loss and the elderly hearing-impaired listeners. When the closed-set identification of synthetic speech was compared to its open-set recognition, the hearing-impaired elderly gained as much from the reduction in stimulus/response uncertainty as the two younger groups. Finally, among the elderly hearing-impaired listeners, speech-recognition performance was correlated negatively with hearing sensitivity, but scores were correlated positively among the different talker conditions. Those listeners with the greatest hearing loss had the most difficulty understanding speech and those having the most trouble understanding natural speech also had the greatest difficulty with synthetic speech.