Hagerman Björn
Department of Clinical Neuroscience, Karolinska Institutet, Danderyd, Sweden.
Int J Audiol. 2002 Sep;41(6):321-9. doi: 10.3109/14992020209090406.
A previously developed speech test with sentences in noise was modified in an attempt to increase its efficiency. Thus the original, slightly modulated (SM) noise was changed to be fully modulated (FUM), and the speech-to-noise ratio of each word was controlled to make all the words equally difficult. The new and the old version were compared in 41 hearing-impaired subjects. The learning effect was similar for both noises, but the variability was higher for the FUM noise. However, the efficiency of the speech test was slightly better for the FUM noise. Speech recognition in both types of noise was correlated with pure-tone thresholds at high frequencies, i.e. 2000 Hz and above, but not to tone thresholds at lower frequencies. Results in FUM noise and in SM noise were highly correlated, with a correlation coefficient of 0.86.
为提高效率，对之前开发的带噪声句子的言语测试进行了修改。因此，将原来的轻微调制（SM）噪声改为完全调制（FUM）噪声，并控制每个单词的言语噪声比，使所有单词难度相同。在41名听力受损受试者中对新旧版本进行了比较。两种噪声的学习效果相似，但FUM噪声的变异性更高。然而，FUM噪声的言语测试效率略高。两种噪声中的言语识别都与高频（即2000Hz及以上）的纯音阈值相关，但与低频的音调阈值无关。FUM噪声和SM噪声中的结果高度相关，相关系数为0.86。
