Surr R K, Schwartz D M
Ear Hear. 1980 Nov-Dec;1(6):319-23. doi: 10.1097/00003446-198011000-00004.
The interference effects of multi-talker speech babble on the California Consonant Test scores were examined. Phoneme recognition was assessed in a sound field in quiet and under 4 message-to-competition ratio conditions for normal-hearing subjects and in three MCR conditions for listeners with bilateral high-frequency sensorineural hearing loss. The noise interference functions for both subject groups were characterized by a gradual decline in recognition performance as the signal-to-noise ratio decreased. The slope of the function for the 2 groups was parallel with the mean scores for the hearing-impaired subjects approximately 30% lower than those for the normal hearers. Test-retest reliability across conditions was examined via correlational analysis and by computing test-retest difference scores for individual subjects. These data are discussed in terms of sampling theory for full-list and half-list presentations and probabilities of measurement error for determining significance between 2 scores.
研究了多说话者言语嘈杂对加利福尼亚辅音测试分数的干扰效应。在安静的声场中以及在4种信号干扰比条件下，对听力正常的受试者评估音素识别，对双侧高频感音神经性听力损失的受试者在3种信号干扰比条件下评估音素识别。两个受试者组的噪声干扰函数的特征均为随着信噪比降低，识别性能逐渐下降。两组的函数斜率平行，听力受损受试者的平均分数比听力正常者低约30%。通过相关分析以及计算个体受试者的重测差异分数，检验了不同条件下的重测信度。根据全列表和半列表呈现的抽样理论以及确定两个分数之间显著性的测量误差概率，对这些数据进行了讨论。
