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相关概念视频

Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

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The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
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穿孔孔耳塞 (pCEP):一种概念验证的耳塞,可以在不影响噪音减弱的情况下改善声音定位.

Nir Fink1,2, Rachel Levitas2, Arik Eisenkraft3

  • 1Department of Communication Disorders, Acoustics and Noise Research Lab in the Name of Laurent Levy, Ariel University, Ariel 40700, Israel.

Sensors (Basel, Switzerland)
|September 9, 2023
PubMed
概括

与传统的耳塞相比,新的穿孔孔耳塞 (pCEP) 为士兵提供了改进的声音定位. 这种听力保护装置 (HPD) 平衡了降低噪音的作用,在战斗环境中更好地检测关键声音.

关键词:
听力保护设备 听力保护设备军事噪音 军事噪音穿孔形耳塞 (pCEP) 是一种耳塞.声音本地化 声音本地化

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科学领域:

  • 听力学 听力学是指听力学.
  • 军事工程的军事工程.
  • 人类因素工程 人类因素工程

背景情况:

  • 战斗士需要听力保护设备 (HPD),这些设备不会妨碍检测关键的听觉信号.
  • 现有的HPD通常会损害声音定位能力,影响任务的有效性.
  • 穿孔孔耳塞 (pCEP) 是一种新型的被动HPD,旨在增强声音定位,同时保持噪声减弱.

研究的目的:

  • 为了评估pCEP的声音定位性能.
  • 为了比较pCEP与3MTM Combat ArmsTM 4.1 (开放模式) 和3MTM E-A-RTM ClassicTM耳塞的性能.
  • 评估各种声音源的局部位置,包括枪声,连续噪音和口语.

主要方法:

  • 90名听力正常的参与者 (年龄在20-35岁) 从多个监视器上局部化声音刺激.
  • 定位精度是用HPD和没有HPD测量.
  • 性能指标包括不同声音源和位置的根平均平方误差 (RMSE).

主要成果:

  • 与没有HPD相比,所有测试的HPD都恶化了声音定位能力.
  • 语音本地化不如其他声音类型那么准确.
  • 对于来自后部显示器的声音,定位错误最大.
  • 3MTM E-A-RTM ClassicTM提供了最高的衰减,但也提供了最大的RMSE,而3MTM Combat ArmsTM 4.1具有最低的衰减和RMSE. 对于这两个指标,pCEP的表现均为中等水平.

结论:

  • 在军事环境中,pCEP提供了潜在的优势,因为它通过改善对3MTM E-A-RTM ClassicTM的声音定位来改善声音定位.
  • 该pCEP提供比3MTM战斗武器TM 4.1.1.更大的噪音减弱.
  • 建议使用pCEP在杂的军事环境中,听力保护和声音定位都至关重要.