Mühler Roland, Ziese Michael, Rostalski Dorothea
Experimentelle Audiologie und Medizinische Physik, Klinik für Hals-, Nasen- und Ohrenheilkunde, Otto-von-Guericke Universität, Magdeburg, Deutschland.
ORL J Otorhinolaryngol Relat Spec. 2009;71(1):14-20. doi: 10.1159/000165170. Epub 2008 Oct 23.
The purpose of the study was to develop a speaker discrimination test for cochlear implant (CI) users. The speech material was drawn from the Oldenburg Logatome (OLLO) corpus, which contains 150 different logatomes read by 40 German and 10 French native speakers. The prototype test battery included 120 logatome pairs spoken by 5 male and 5 female speakers with balanced representations of the conditions 'same speaker' and 'different speaker'. Ten adult normal-hearing listeners and 12 adult postlingually deafened CI users were included in a study to evaluate the suitability of the test. The mean speaker discrimination score for the CI users was 67.3% correct and for the normal-hearing listeners 92.2% correct. A significant influence of voice gender and fundamental frequency difference on the speaker discrimination score was found in CI users as well as in normal-hearing listeners. Since the test results of the CI users were significantly above chance level and no ceiling effect was observed, we conclude that subsets of the OLLO corpus are very well suited to speaker discrimination experiments in CI users.
该研究的目的是为人工耳蜗（CI）使用者开发一种说话者辨别测试。语音材料取自奥尔登堡音节表（OLLO）语料库，该语料库包含由40名以德语为母语的人和10名以法语为母语的人朗读的150个不同的音节表。测试电池原型包括由5名男性和5名女性说话者说出的120对音节表，“同一说话者”和“不同说话者”条件的表示均衡。一项研究纳入了10名听力正常的成年听众和12名语后聋成年CI使用者，以评估该测试的适用性。CI使用者的说话者辨别平均得分正确率为67.3%，听力正常的听众为92.2%。在CI使用者以及听力正常的听众中，发现语音性别和基频差异对说话者辨别得分有显著影响。由于CI使用者的测试结果显著高于随机水平且未观察到天花板效应，我们得出结论，OLLO语料库的子集非常适合CI使用者的说话者辨别实验。
