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首页> 外文期刊>Journal of speech, language, and hearing research: JSLHR >Effects of loud and amplified speech on sentence and word intelligibility in Parkinson disease.
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Effects of loud and amplified speech on sentence and word intelligibility in Parkinson disease.

机译：大声和放大语音对帕金森病句子和单词清晰度的影响。

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PURPOSE: In the two experiments in this study, the author examined the effects of increased vocal effort (loud speech) and amplification on sentence and word intelligibility in speakers with Parkinson disease (PD). Methods Five talkers with PD produced sentences and words at habitual levels of effort and using loud speech techniques. Amplified sets of sentences and words were created by increasing the intensity of habitual stimuli to the level of loud stimuli. Listeners rated the intelligibility of the 3 sets of sentences on a 1-7 scale and transcribed the 3 sets of words. RESULTS: Both loud speech and amplification significantly improved intelligibility for sentences and words. Loud speech resulted in greater intelligibility improvement than amplification. CONCLUSIONS: By comparing loud and amplified scores, about one third to one half of intelligibility improvement with loud speech could be attributed to increases in audibility or signal-to-noise ratio. Thus, factors other than increased intensity must be partly responsible for the loud speech benefit. Changes in articulation appear to play a relatively small role: Initial/h/was the only consonant to consistently show improvement with loud speech. Phonatory changes such as improvements in F(0) and spectral tilt may account for improved speech intelligibility using loud speech techniques.
机译：目的：在这项研究的两个实验中，作者检查了增加声音的努力（大声讲话）和放大对帕金森病（PD）说话者的句子和单词清晰度的影响。方法5名具有PD的说话者以惯常的努力水平并使用大声讲话技术来产生句子和单词。通过将习惯性刺激的强度增加到大声刺激的水平来创建句子和单词的放大集。听众以1-7的等级对这3组句子的可理解性进行了评分，并转录了3组单词。结果：大声讲话和放大都大大提高了句子和单词的清晰度。大声讲话比可听性带来更大的清晰度改善。结论：通过比较响亮的分数和放大的分数，可听性或信噪比的提高可归因于响亮语音的清晰度提高的三分之一到一半。因此，除了强度增加以外，其他因素也必须部分归因于较大的语音收益。清晰度的变化似乎起着相对较小的作用：“头/ h /”是唯一能在大声讲话中持续表现出改善的辅音。语音变化，例如F（0）和频谱倾斜的改善，可能会导致使用大声语音技术改善语音清晰度。

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