评估年龄对语音噪音感知的作用,主要基于时间信封信息
Jonathan Regev1, Andrew J Oxenham2, Helia Relaño-Iborra3
1Hearing Systems Section, Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark.
Hearing research
|March 14, 2025
概括
老年人可能不会更容易受到影响语音可理解性的振幅调制 (AM) 掩盖的影响. 虽然一些趋势表明存在差异,但这项研究并没有明确证明,在老年听众中AM掩盖的增加会影响语音接收值 (SRT).
科学领域:
- 听觉神经科学 听觉神经科学
- 语音感知 语音感知
- 精神声学是一种精神声学.
背景情况:
- 广度调制 (AM) 模式对于语音可理解性至关重要,特别是在噪音中.
- AM掩盖受调制频率选择性的影响,并且可能随着年龄的增长而下降.
- 以前的研究表明,与年龄相关的AM频率选择性下降.
研究的目的:
- 调查老年人增加的AM掩盖是否与语音可理解性降低相关.
- 为了在不同的AM掩盖条件下比较年轻和老年听众之间的语音接收值 (SRTs).
- 要确定SRT的年龄相关差异是否取决于面罩调制频率内容.
主要方法:
- 语音接收值 (SRT) 用语音编码语音和调制/不调制口罩进行测量.
- 掩盖器包括宽带AM,各种频率的窄带AM,没有调制.
- 参与者是年轻人 (19-25岁) 和老年人 (57-79岁) 听力正常的成年人.
主要成果:
- 宽带AM掩盖器增加了SRT与非调节掩盖器相比.
- SRTs显示了面罩调制中心频率 (2-32 Hz) 的最小变化.
- 老年听众的AM频率选择性较低,但SRT并非比年轻听众更高.
结论:
- 虽然趋势表明AM掩盖的潜在与年龄相关的差异,但结果并不具有决定性.
- 这项研究并没有明确表明,老年人对AM掩盖的敏感性更大,影响语音可理解性.
- 需要进一步的研究,以充分了解与年龄相关的AM掩盖和语音感知变化.
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