Ranking hearing aid input-output functions for understanding low-level, conversational-level, and high-level speech in multitalker babble
Ranking hearing aid input-output functions for understanding low-level, conversational-level, and high-level speech in multitalker babble
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DOI：
10.1044/1092-4388(2007/022
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发表时间：
2007-04-01
影响因子：
2.6
通讯作者：
Christensen, Laurel A.
中科院分区：
文献类型：
--
作者：
Chung, King;Killion, Mead C.;Christensen, Laurel A.
目的：为了确定6个输入输出功能的排名，以了解低级别，会话，和高级别的语音在多说话者的胡言乱语，而不操纵音量控制的听众与正常听力，平坦的感觉神经性听力损失，轻度倾斜的感觉神经性hearingloss.Method：削峰，压缩限制，和4个宽动态范围压缩（WDRC）。在重复测量设计中比较了输入-输出函数。压缩特性之间的相互作用被最小化。在3个输入水平（45、65和90 dB声压级）下处理和记录语音和多路重合。语音识别的3组听众（n = 6/组）进行了测试，每个输入-输出功能，并在每个输入level.Results处理语音：输入-输出功能，使低级别的语音可听和高级别的语音失真，避免削峰或严重压缩产生较高的语音识别分数。这些.结论：当助听器使用者不能或不想操作音量控制时，具有低压缩比区域扩展到高输入电平或具有高压缩限制阈值的WDRC最适合于在多路串音中的语音识别。需要进一步研究不同投入产出函数的主观偏好。
Purpose: To determine the rankings of 6 input-output functions for understanding low-level, conversational, and high-level speech in multitalker babble without manipulating volume control for listeners with normal hearing, flat sensorineural hearing loss, and mildly sloping sensorineural hearing loss.Method: Peak clipping, compression limiting, and 4 wide dynamic range compression (WDRC). input-output functions were compared in a repeated-measure design.. Interactions among the compression characteristics were minimized. Speech and babble were processed and recorded at 3 input levels: 45, 65, and 90 dB sound pressure level. Speech recognition of 3 groups of listeners (n = 6/group) was tested for speech processed by each input-output function and at each input level.Results: Input-output functions that made low-level speech audible and high-level speech less distorted by avoiding peak clipping or severe compression yielded higher speech recognition scores. These. results are consistent with previous findings in the literature.Conclusion: WDRCs with the low compression ratio region extended to a high input level or with a high compression limiting threshold were the best for speech recognition in babble when the hearing aid user cannot or does not want to manipulate the volume control. Future studies on subjective preferences of different input-output functions are needed.