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空间分离的快速测量,以免被掩盖,以及它与可理解性的关系

Z Ellen Peng¹, Victoria Sweeney¹

¹Functional Hearing Laboratory, Boys Town National Research Hospital, Omaha, Nebraska 68131, USAEllen.Peng@boystown.org; Victoria.sweeney@boystown.org.

JASA express letters

|February 13, 2025

概括

这项研究验证了一种快速测量来自掩盖-最小角分离 (MAS) 的空间释放的方法. 渐进式跟踪加速了MAS测量而不影响准确性,提供了可靠的估计方法.

科学领域:

听觉感知是一种听觉感知.
语音可理解性语音可理解性
心理物理学的精神物理.

背景情况:

掩盖的空间释放 (SRM) 对于在杂环境中理解语音至关重要.
最小角分离 (MAS) 量化了改善可理解性所需的空间分离.
有效测量MAS对于研究和临床应用至关重要.

研究的目的:

为了验证一种测量MAS的快速方法.
为了比较MAS估计的不同心理物理方法的准确性和稳定性.
探索空间分离,信号噪声比率和语音识别精度之间的关系.

主要方法:

我们比较了三个心理物理方法:持续的刺激,自适应的楼梯和渐进的跟踪.
估计的MAS,为20%的语音可理解性改善的最小空间分离.
运用了启动链接来进行组级值分析.

主要成果:

在这三种方法中,在集团层面的MAS值中没有发现显著差异.
渐进跟踪显示,与其他方法相比,MAS的估计更快.
该研究证实了使用渐进跟踪的MAS值估计的稳定性.

结论:

渐进跟踪方法为测量MAS提供了更快,同样稳定的方法.
加快MAS测量可以提高听觉感知研究效率.
了解MAS对于开发有效的助听技术至关重要.

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Echo

Echo

The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...