Children With Cochlear Implants and With Typical Hearing (Iglehart, 2016)

Purpose This study measured speech perception ability in children with cochlear implants and children with typical hearing when listening across ranges of reverberation times (RTs) and speech-to-noise ratios.

Method Participants listened in classroom RTs of 0.3, 0.6, and 0.9 s combined with a 21-dB range of speech-to-noise ratios. Subsets also listened in a low-reverberant audiological sound booth. Performance measures using the Bamford-Kowal-Bench Speech-in-Noise Test (Etymotic Research, Inc., 2005) were 50% correct word recognition across these acoustic conditions, with supplementary analyses of percent correct.

Results Reduction in RT from 0.9 to 0.6 s benefited both groups of children. A further reduction in RT to 0.3 s provided additional benefit to the children with cochlear implants, with no further benefit or harm to those with typical hearing. Scores in the sound booth were significantly higher for the participants with implants than in the classroom.

Conclusions These results support the acoustic standards of 0.6 s RT for children with typical hearing and 0.3 s RT for children with auditory issues in learning spaces (?283 m3) as specified in standards S12.60-2010/Part 1 of the American National Standards Institute /Acoustical Society of America (2010) . In addition, speech perception testing in a low-reverberant booth overestimated classroom listening ability in children with cochlear implants.

{'Purpose': '本研究旨在评估佩戴人工耳蜗的儿童与正常听力的儿童在跨越不同混响时间（RTs）和语音噪声比时的语音感知能力。', 'Method': '受试者在0.3秒、0.6秒和0.9秒的教室混响时间下进行听力测试，同时结合21分贝范围内的语音噪声比。部分受试者还在低混响的听力学声学室内进行听力测试。使用Bamford-Kowal-Bench语音噪声测试（Etymotic Research, Inc., 2005）的性能指标为在这些声学条件下50%的正确单词识别率，并对正确百分比进行了补充分析。', 'Results': '从0.9秒的RT减少到0.6秒对两组儿童都有益。进一步将RT减少到0.3秒，对佩戴人工耳蜗的儿童提供了额外的益处，而对那些具有典型听力的儿童则没有进一步的益处或损害。在声学室中的得分显著高于教室中的得分。', 'Conclusions': '这些结果支持了美国国家标准协会/声学学会（2010）在标准S12.60-2010/第1部分中规定的儿童在典型听力情况下0.6秒的RT和在学习空间（约283立方米）中听觉问题儿童0.3秒的RT的声学标准。此外，在低混响的声学室内进行的语音感知测试高估了佩戴人工耳蜗的儿童在教室中的听力能力。'}