Lucks Mendel Lisa, Widner Hannah
a School of Communication Sciences and Disorders , The University of Memphis , USA.
Int J Audiol. 2016;55(2):126-34. doi: 10.3109/14992027.2015.1061710. Epub 2015 Jul 19.
The purpose of this study was to determine if speech-in-noise ability, as measured by SNR-50 and SNR loss in bilingual Spanish listeners with normal hearing, was affected by test difficulty.
Quasi-experimental, non-randomized intervention study.
Two groups of adult listeners participated: monolingual English listeners with normal hearing (N = 12) and bilingual Spanish listeners with normal hearing who were proficient in English (N = 10). The quick speech-in-noise (QuickSIN), the Bamford-Kowal-Bench speech-in-noise (BKB-SIN), and the words-in-noise (WIN) tests were used to assess signal-to-noise ratio (SNR) loss and SNR-50 for both groups.
Despite the fact that the bilinguals had normal hearing and were proficient in English, each of the speech-in-noise tests evaluated indicated the Spanish listeners had measurable SNR loss and higher than normal SNR-50s. Performance on the BKB-SIN was best for both groups, indicating test difficulty had a significant impact on speech perception in noise.
Bilingual Spanish listeners with normal hearing exhibited a mild SNR loss comparable to that observed for a person with hearing loss. This decreased performance in noise requires an improved SNR for this population to reach a comparable level of comprehension to their monolingual English counterparts.
本研究旨在确定，对于听力正常的双语西班牙语使用者，以信噪比50（SNR-50）和信噪比损失来衡量的噪声环境下言语能力是否受测试难度影响。
准实验性、非随机干预研究。
两组成年受试者参与研究：听力正常的单语英语使用者（N = 12）和听力正常且精通英语的双语西班牙语使用者（N = 10）。使用快速噪声环境下言语测试（QuickSIN）、班福德-科瓦尔-本奇噪声环境下言语测试（BKB-SIN）以及噪声环境下单词测试（WIN）来评估两组的信噪比损失和信噪比50。
尽管双语使用者听力正常且精通英语，但所评估的每项噪声环境下言语测试均表明，西班牙语使用者存在可测量的信噪比损失且信噪比50高于正常水平。两组在BKB-SIN测试中的表现最佳，表明测试难度对噪声环境下的言语感知有显著影响。
听力正常的双语西班牙语使用者表现出与听力损失者相当的轻度信噪比损失。该群体在噪声环境下的表现下降，需要更高的信噪比才能达到与单语英语使用者相当的理解水平。
Zotero 插件