重放方式对老年人语言清晰度评价的影响

Effect of Reproduction Modes on Speech Intelligibility Evaluation for the Elderly

在不同混响时间、不同信噪比、不同噪声方位角条件下,通过对60岁以上老年人的听音评价,探讨扬声器重放和耳机重放方式对老年人语言清晰度的影响,并与听力正常的年轻人得到的结果进行对比。结果表明:采用扬声器重放得到的汉语语言清晰度得分比采用耳机重放得到的汉语语言清晰度得分略高,但两种重放方式下的汉语语言清晰度得分无显著性差异;老年人在两种重放方式下的得分差异比年轻人的得分差异略高;采用人工头录音再通过耳机重放由老年人进行室内汉语语言清晰度评价,得到的结果与直接在厅堂现场评价得到的结果基本一致。

The listening evaluation for the elderly over 60 years old was carried out under different reverberation time, different signal-to-noise ratio and different noise azimuth angle conditions. The effect of loudspeaker reproduction and headphone reproduction on the speech intelligibility of the elderly was investigated. The speech intelligibility evaluation results of the elderly were compared with those of young adults with normal hearing. The results show that Chinese speech intelligibility score obtained from loudspeaker reproduction is slightly higher than that obtained from headphone reproduction. But this difference is not significant. The difference in speech intelligibility scores of the elderly between two reproduction modes is slightly larger than those of the young adults. The results of Chinese speech intelligibility evaluation in rooms for the elderly by reproducing the signals recorded by the artificial head are basically consistent with those for the elderly by listening in the real environment.