Audibility and Spectral-Ripple Discrimination Thresholds as Predictors of Word Recognition with Nonlinear Frequency Compression.
Audibility and Spectral-Ripple Discrimination Thresholds as Predictors of Word Recognition with Nonlinear Frequency Compression.
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DOI：
10.1055/s-0041-1732333
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发表时间：
2021-10
影响因子：
1.2
通讯作者：
McCreery, Ryan W.
中科院分区：
文献类型：
--
作者：
Brennan, Marc A.;McCreery, Ryan W.
关键词：
非线性频率压缩 (NFC) 将高频声音降低到较低频率，用于提高高频可听度。然而，NFC 的功效差异很大，有些人从 NFC 中受益，但很多人却没有。光谱分辨率是解释 NFC 给个人带来好处的因素之一。由于频谱分辨率较好的人比频谱分辨率较差的人能理解更多的语音，因此假设可以通过 NFC 测量的频谱分辨率相对于没有 NFC 的情况的变化来预测个人从 NFC 中受益。确定 NFC 对获取光谱信息的影响，以及这些变化是否预示着 NFC 对感音神经性听力损失 (SNHL) 成人的个体益处。一项准实验队列研究。参与者使用一对设置为所需感觉水平算法 (DSL m[i/o]) 的助听器。参与者是 19 名 SNHL 成人，从男孩镇国家研究医院参与者登记处招募。参与者坐在声音衰减室中，然后在使用和不使用 NFC 两种不同条件下测量单词识别正确率和频谱纹波辨别阈值。由于已知可听度会影响频谱纹波阈值并受益于 NFC，因此可使用辅助语音清晰度指数 (SII) 来量化可听度。生成线性混合模型以使用辅助 SII 和频谱纹波辨别阈值来预测单词识别。虽然 NFC 不会影响单词识别正确率，但具有较高（更好）辅助 SII 和频谱纹波辨别阈值的参与者比具有较低辅助 SII 或频谱纹波辨别阈值的参与者理解更多单词。 NFC 带来的好处无法通过参与者的辅助 SII 或频谱纹波辨别阈值来预测。我们扩展了之前关于可听度对 NFC 益处的影响的研究，包括光谱分辨率的测量，即光谱纹波辨别阈值。临床上，这些结果表明，听力和频谱分辨率较好的患者会比听力或频谱分辨率较差的患者更好地理解语音；然而，这些结果与“NFC 给个人带来的好处可以通过辅助听觉或频谱分辨率来预测”这一观点不一致。
Nonlinear frequency compression (NFC) lowers high-frequency sounds to a lower frequency and is used to improve high-frequency audibility. However, the efficacy of NFC varies widely—while some individuals benefit from NFC, many do not. Spectral resolution is one factor that might explain individual benefit from NFC. Because individuals with better spectral resolution understand more speech than those with poorer spectral resolution, it was hypothesized that individual benefit from NFC could be predicted from the change in spectral resolution measured with NFC relative to a condition without NFC. To determine the impact of NFC on access to spectral information and whether these changes predict individual benefit from NFC for adults with sensorineural hearing loss (SNHL). A quasi-experimental cohort study. Participants used a pair of hearing aids set to the Desired Sensation Level algorithm (DSL m[i/o]). Participants were 19 adults with SNHL, recruited from the Boys Town National Research Hospital Participant Registry. Participants were seated in a sound-attenuating booth and then percent-correct recognition of words and spectral-ripple discrimination thresholds were measured for two different conditions, with and without NFC. Because audibility is known to influence spectral-ripple thresholds and benefit from NFC, audibility was quantified using the aided speech intelligibility index (SII). Linear mixed models were generated to predict word recognition using the aided SII and spectral-ripple discrimination thresholds. While NFC did not influence percent-correct word recognition, participants with higher (better) aided SII and spectral-ripple discrimination thresholds understood more words than those with either a lower aided SII or spectral-ripple discrimination threshold. Benefit from NFC was not predictable from a participant’s aided SII or spectral-ripple discrimination threshold. We have extended previous work on the effect of audibility on benefit from NFC to include a measure of spectral resolution, the spectral-ripple discrimination threshold. Clinically, these results suggest that patients with better audibility and spectral resolution will understand speech better than those with poorer audibility or spectral resolution; however, these results are inconsistent with the notion that individual benefit from NFC is predictable from aided audibility or spectral resolution.
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影响因子：
3.7
作者：
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通讯作者：
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