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相关概念视频

Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

233
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...
233

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A Method to Study Adaptation to Left-Right Reversed Audition
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用双耳麦克风定位并发声源:一项模拟研究.

Jakeh Orr1, William Ebel1, Yan Gai1

  • 1School of Science and Engineering, Saint Louis University, Saint Louis, MO 63105, USA.

Hearing research
|September 25, 2023
PubMed
概括

这项研究引入了一种新的螺旋模型,用于使用双耳麦克风定位多个声音源. 该算法有效地预测声源的位置,即使在具有挑战性的声环境中.

科学领域:

  • 声学 声学 在声学方面
  • 听觉感知是一种听觉感知.
  • 信号处理 信号处理

背景情况:

  • 人类的听觉系统使用双耳线索来定位声音.
  • 同时声源的空间分离对于听觉感知至关重要.
  • 现有的本地化算法面临着与多个同时声音源的挑战.

研究的目的:

  • 开发和评估一种算法,用于使用双耳麦克风在近视角定位多个声音源.
  • 探索时间频率稀疏性用于声音源集群的应用.
  • 评估模型在各种声学条件下的性能,包括反响.

主要方法:

  • 模型模拟利用时间频域信号的"稀疏性"属性.
  • 音声间规范化程序,以生成空间模式.
  • 应用分类算法来测量本地化错误.
  • 在无声和反响条件下测试宽带噪音,语音和音乐.

主要成果:

  • 该模型为正面半球场中的声音源生成了螺旋图案.
  • 随着频率从300赫兹增加到3000赫兹,平均向误差从4.5°到19°不等.
  • 低频表现与语音优于通用交叉相关模型.
关键词:
对于HRTF来说,这是一个很大的挑战.一个ILD的ILD.在ITD中,它是ITD.反响 反响 反响 反响 反响 反响机器人技术 机器人技术 机器人技术声音本地化 声音本地化稀疏性 稀疏性 是一种稀疏性.

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  • 模型性能显示,在较低频率下对反响有更大的弹性.

    • 结论:

    • 拟议的螺旋模型提供了对水平声源位置的快速和准确预测.
    • 该算法适用于涉及并发声音的真实世界场景.
    • 该模型在具有挑战性的声环境中显示出强度,特别是在较低频率.