Liu Danzheng, Shi Lu-Feng
Zhongshan Hospital, Fudan University, Shanghai, China.
Am J Audiol. 2013 Jun;22(1):147-56. doi: 10.1044/1059-0889(2013/12-0047).
This study established the performance-intensity function for Beijing and Taiwan Mandarin bisyllabic word recognition tests in noise in native speakers of Wu Chinese. Effects of the test dialect and listeners' first language on psychometric variables (i.e., slope and 50%-correct threshold) were analyzed.
Thirty-two normal-hearing Wu-speaking adults who used Mandarin since early childhood were compared to 16 native Mandarin-speaking adults. Both Beijing and Taiwan bisyllabic word recognition tests were presented at 8 signal-to-noise ratios (SNRs) in 4-dB steps (-12 dB to +16 dB). At each SNR, a half list (25 words) was presented in speech-spectrum noise to listeners' right ear. The order of the test, SNR, and half list was randomized across listeners. Listeners responded orally and in writing.
Overall, the Wu-speaking listeners performed comparably to the Mandarin-speaking listeners on both tests. Compared to the Taiwan test, the Beijing test yielded a significantly lower threshold for both the Mandarin- and Wu-speaking listeners, as well as a significantly steeper slope for the Wu-speaking listeners.
Both Mandarin tests can be used to evaluate Wu-speaking listeners. Of the 2, the Taiwan Mandarin test results in more comparable functions across listener groups. Differences in the performance-intensity function between listener groups and between tests indicate a first language and dialectal effect, respectively.
本研究建立了吴语母语者在北京和台湾普通话双音节词噪声识别测试中的性能-强度函数。分析了测试方言和听众的第一语言对心理测量变量（即斜率和50%正确阈值）的影响。
将32名自幼使用普通话的听力正常的吴语成年人与16名以普通话为母语的成年人进行比较。北京和台湾的双音节词识别测试均以4分贝步长（-12分贝至+16分贝）的8个信噪比呈现。在每个信噪比下，向听众的右耳呈现半张词表（25个词），词表在语谱噪声中呈现。测试顺序、信噪比和半张词表在听众之间随机排列。听众进行口头和书面回答。
总体而言，吴语听众在两项测试中的表现与普通话听众相当。与台湾测试相比，北京测试对普通话和吴语听众的阈值显著更低，对吴语听众的斜率显著更陡。
两种普通话测试均可用于评估吴语听众。在这两种测试中，台湾普通话测试在不同听众群体中产生的函数更具可比性。听众群体之间以及测试之间性能-强度函数的差异分别表明了第一语言和方言的影响。
