Cox R M, McDaniel D M
J Acoust Soc Am. 1984 Sep;76(3):758-66. doi: 10.1121/1.391299.
Twelve normal-hearing subjects rated the intelligibility of 35-s, hearing-aid-processed continuous discourse (CD) passages. Three talkers (two male, one female), four hearing aids, and two signal-to-babble (S/B) ratios were used in a completely crossed design. Research questions concerned: (1) ability of listeners to rate intelligibility, (2) sensitivity of hearing aid rankings were based on intelligibility ratings for three CD passages per instrument, and (3) dependence of hearing aid rankings on (a) S/B ratio, and (b) talker characteristics. Results were: (1) listeners were able to rate intelligibility, (2) rankings based on intelligibility ratings of three CD passages per hearing aid were capable of identifying two superior instruments within a group of four hearing aids that were similar in frequency/gain function, (3) listening in a more difficult S/B ratio substantially decreased the sensitivity of the hearing aid rankings for the female talker but had only minor effects on the rankings for the male talkers, and (4) hearing aid intelligibility rankings were found to be different for different talkers. Applications to hearing aid selection are discussed.
12名听力正常的受试者对经助听器处理的35秒连续话语（CD）段落的可懂度进行了评分。采用完全交叉设计，使用了三名说话者（两名男性，一名女性）、四种助听器以及两种信混比（S/B）。研究问题包括：（1）听众对可懂度进行评分的能力；（2）助听器排名的敏感性，排名基于每种仪器的三段CD段落的可懂度评分；（3）助听器排名对（a）信混比和（b）说话者特征的依赖性。结果如下：（1）听众能够对可懂度进行评分；（2）基于每种助听器三段CD段落的可懂度评分进行的排名能够在一组频率/增益功能相似的四种助听器中识别出两种更优的仪器；（3）在更困难的信混比条件下聆听会大幅降低女性说话者的助听器排名敏感性，但对男性说话者的排名影响较小；（4）发现不同说话者的助听器可懂度排名不同。文中还讨论了其在助听器选择方面的应用。
