Masalski Marcin, Adamczyk Martyna, Morawski Krzysztof
Department of Otolaryngology Head and Neck Surgery, Wroclaw Medical University, 50-367 Wroclaw, Poland.
Institute of Biomedical Engineering and Instrumentation, Wroclaw University of Technology, 50-370 Wroclaw, Poland.
Audiol Res. 2021 Jul 12;11(3):342-356. doi: 10.3390/audiolres11030032.
The development of the global digit-in-noise test requires optimization of each language version on a group of normal-hearing native-speakers. An alternative solution may be an adaptive optimization during ongoing tests in a group of subjects with unknown hearing impairments. The objective of the research was to compare the optimization results between these groups.
Digit triplets consisting of three pseudo-randomly selected digits were presented in speech-shaped noise at various signal-to-noise ratios (SNRs), according to the protocol of the final speech test. Digit-specific and position-specific speech reception thresholds (SRTs) were determined and compared between groups.
The study sample consisted of 82 subjects, 26 normal-hearing subjects and 56 patients with diverse hearing disorders. Statistically significant differences in digit-specific SRTs between the control and the investigated group were obtained for three digits in continuous noise (digits 0, 4, 6; -value of 0.04, 0.03, 0.05) and two in modulated noise (digits 1 and 6; -value of 0.05 and 0.01). An analysis including only ears with SRTs within the range of the normal hearing control group showed no statistically significant differences between digits.
Optimization of speech material can be carried out in a group of subjects with unknown hearing impairments, provided the ears with scores outside normal range are rejected.
全球数字噪声测试的开发需要在一组听力正常的母语使用者中对每个语言版本进行优化。另一种解决方案可能是在一组听力障碍情况不明的受试者进行测试的过程中进行自适应优化。本研究的目的是比较这两组的优化结果。
根据最终言语测试的方案，以不同的信噪比（SNR）在言语噪声中呈现由三个伪随机选择的数字组成的数字三联体。确定并比较两组之间特定数字和特定位置的言语接受阈值（SRT）。
研究样本包括82名受试者，26名听力正常的受试者和56名患有各种听力障碍的患者。在连续噪声中，对照组和研究组之间特定数字的SRT存在统计学上的显著差异（数字0、4、6；P值分别为0.04、0.03、0.05），在调制噪声中有两个数字存在显著差异（数字1和6；P值分别为0.05和0.01）。仅对SRT在正常听力对照组范围内的耳朵进行分析，结果显示数字之间无统计学显著差异。
只要排除分数超出正常范围的耳朵，就可以在一组听力障碍情况不明的受试者中进行言语材料的优化。
