Beattie R C, Edgerton B J, Svihovec D V
J Am Audiol Soc. 1975 Nov-Dec;1(3):97-101.
The Auditec of St. Louis recordings of the Central Institute for the Deaf spondees were investigated with normal hearing subjects and found to have an unnecessarily large range of audibility. Consequently, an 18-item test with greater homogeneity of audibility was proposed. Articulation function slopes of about 10% per decibel were obtained with both the 18- and 36-item tests. The articulation function of the 18-item test did not reflect its improved homogeneity. The mean speech reception threshold was 5 dB better than ANSI-1969 specifications, and speech detection threshold was found to be 9 dB better than speech reception threshold. A derived speech reception threshold can be obtained by adding 5 dB to the lowest threshold at which any spondee is identified.
对圣路易斯Auditec公司录制的中央聋人研究所的扬扬格词进行了研究，研究对象为听力正常者，发现其可听度范围过大。因此，有人提出了一项包含18个项目的测试，其可听度的同质性更高。18项和36项测试的清晰度函数斜率均约为每分贝10%。18项测试的清晰度函数并未体现出其改善后的同质性。平均言语接受阈比ANSI - 1969标准高出5 dB，且发现言语察觉阈比言语接受阈高出9 dB。通过将识别出任何扬扬格词的最低阈值得出的言语接受阈加上5 dB，可得到一个推导言语接受阈。
