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助听器处理延迟对在开放的配件中停止和音符表达感知的影响

Petri Korhonen¹, Christopher Slugocki¹, Francis Kuk¹

¹Office of Research in Clinical Amplification (ORCA-USA), WS Audiology, Lisle, IL.

American journal of audiology

|August 6, 2024

概括

助听器处理延迟影响语音感知,转移辅音发音. 建议在开耳式助听器中延迟更短,以保持自然的声音线索,以便更清晰地理解语音.

科学领域:

听力学听力学是指听力学.
语音感知语音感知
声学声学在声学方面

背景情况:

助听器 (HA) 处理延迟可能导致开放式耳部配件中的异步声音重叠.
这种时间扭曲可能会影响对辅音发音的感知,这对于语音可理解性至关重要.

研究的目的:

调查助听器处理延迟对音节初始辅音/d/和/t/的发音-无声分类的影响.
为了评估在不同的模拟HA处理延迟下如何感知不同的语音发声时间 (VOT).

主要方法:

19名有听力损失的老年人参与了一项双盲,在受试者内进行的研究.
使用助听器模拟器处理在VOT中变化的刺激,延迟为0,0.5,5和8毫秒.
心理测量功能分析了性能,以确定每个延迟条件的交叉点和斜率.

主要成果:

增加的处理延迟将发声-无声交叉点转移到发声 / di:/ 感知.
8毫秒的延迟导致了相当于5.8毫秒的VOT变化的显著转移.
分类斜率变得显著较浅,处理延迟较长 (8ms),而处理延迟较短 (0和0.5ms).

结论:

助听器处理延迟引入时间扭曲,影响发声感知.
尽量减少开耳助听器配件的处理延迟对于保持自然VOT线索至关重要.
这种保存有助于准确的语音检测和整体的语音理解.

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