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相关概念视频

Sound Intensity Level00:53

Sound Intensity Level

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Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
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Updated: Jun 6, 2025

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses
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空气传导和骨传导的参考值水平-一个多中心研究)

Robert H Margolis1,2, Victoria Sanchez3, Lisa L Hunter4

  • 1Arizona State University College of Health Solutions, Tempe, Arizona 85004, USA.

The Journal of the Acoustical Society of America
|November 22, 2024
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概括
此摘要是机器生成的。

听力计的标准参考值需要修订. 新的测量显示正常听力和听力损失听众的气骨间隙,表明需要进行纠正以防止不必要的干预.

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科学领域:

  • 听力学 听力学是指听力学.
  • 听力科学 听力科学
  • 医疗器械 医疗器械 医疗器械

背景情况:

  • 标准参考值对于准确的听力评估至关重要.
  • 以前的听力计标准可能无法完全解释现实世界的听力变化.
  • 了解空气传导和骨传导值是诊断听力损失的关键.

研究的目的:

  • 为了评估当前用于音频计的标准参考值.
  • 根据新的值测量,建议对听力计标准进行修订.
  • 调查正常听力和神经感官听力损失听众的气骨间隙的发生和原因.

主要方法:

  • 在正常听力 (NH) 和感官神经听力损失 (SNHL) 的参与者中测量了空气导电 (AC) 和骨导电 (BC) 听力值.
  • 选定的NH参与者 (n=53) 年龄为18-25岁,听力正常,没有耳部疾病.
  • 精选的SNHL参与者 (n=49) 证实听力损失,没有耳部疾病.

主要成果:

  • 对于NH听众的交流值平均为3.7dB HL,偏离理想的0dB HL.
  • 在2000Hz以上的NH和SNHL听者和250Hz的SNHL听者中观察到空气骨间隙 (ABGs).
  • 虚假的ABG,可能是由噪音引起的,随着听力损失的严重程度而增加,并有不必要的医疗干预的风险.

结论:

  • 当前标准基准等值值的声压水平需要进行修正.
  • 修订的参考值应确保年轻NH听众的AC值平均为0 dB HL.
  • 修订后的标准应确保正常中耳功能听众的ABG平均为0dB,防止误诊.