Dubno J R, Dirks D D
UCLA School of Medicine, Division of Head and Neck Surgery.
Acta Otolaryngol Suppl. 1990;469:23-9.
To examine the association between frequency and temporal resolution and speech recognition, auditory filter parameters, rates of masking decay, and stop-consonant recognition were determined for 9 normal-hearing and 24 hearing-impaired subjects. Speech-presentation levels were selected for each subject based on articulation index (AI) predictions. Results suggest that auditory filter widths and dynamic ranges were strongly correlated with pure-tone threshold, while time constants were not. Stop-consonant recognition scores for most hearing-impaired listeners were not significantly poorer than predicted by the AI model. Furthermore, differences between observed recognition scores and those predicted by the AI were poorly correlated with derived psychophysical parameter values, suggesting that measures of frequency and temporal resolution and speech recognition may appear to be associated primarily because of their dependence on auditory threshold.
为了研究频率、时间分辨率与言语识别之间的关联，对9名听力正常的受试者和24名听力受损的受试者测定了听觉滤波器参数、掩蔽衰减率和塞音识别能力。根据清晰度指数（AI）预测为每个受试者选择言语呈现水平。结果表明，听觉滤波器宽度和动态范围与纯音阈值密切相关，而时间常数则不然。大多数听力受损听众的塞音识别分数并不比AI模型预测的明显更差。此外，观察到的识别分数与AI预测分数之间的差异与推导的心理物理学参数值相关性较差，这表明频率、时间分辨率和言语识别的测量结果可能主要因其对听觉阈值的依赖性而看似相关。
