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相关概念视频

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

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The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
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The Doppler effect and Doppler shift were named after the Austrian physicist and mathematician Christian Johann Doppler in 1842, who conducted experiments with both moving sources and moving observers. Consider an observer standing on a street corner, observing an ambulance with a siren sound passing by at a constant speed. The observer experiences two characteristic changes in the sound of the siren. Initially, the sound increases in loudness as the ambulance approaches and decreases in...
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相关实验视频

Updated: Jun 7, 2025

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
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整体刺激 DPOAE 分析

Paul D Teal1, Christopher A Shera2, Carolina Abdala2

  • 1Victoria University of Wellington, Wellington, New Zealand.

AIP conference proceedings
|November 15, 2024
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概括
此摘要是机器生成的。

一种新方法同时估计了扭曲产品耳声发射 (DPOAE) 中的扭曲 (D) 和反射 (R) 组件,以改进听力诊断. 这种方法增强了信号分离,并减少了测量工件.

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科学领域:

  • 听力学 听力学是指听力学.
  • 生物医学工程 生物医学工程
  • 信号处理 信号处理

背景情况:

  • 扭曲产品耳声发射 (DPOAE) 对于听力诊断至关重要,但由于相互作用的组件而复杂化.
  • 目前用于分离DPOAE组件的信号处理方法是不完美的,通常涉及频率精度和信号噪声比之间的权衡.

研究的目的:

  • 提出一种新的信号处理方法,用于同时估计DPOAE中扭曲 (D) 和反射 (R) 组件的整个光谱.
  • 克服现有的时间窗口方法的局限性,提高耳机制评估的准确性.

主要方法:

  • 拟议的方法同时估计D和R组件的全部光谱,使用线性凸起式问题表述.
  • 假设包括R和D测量的总和作为与刺激的卷积,D比R更顺的频率表示,以及可用的噪音水平估计.
  • 该方法结合了刺激信号模型,以最大限度地减少干扰,并有效地处理数据与测量器件.

主要成果:

  • 新方法提供了优势,包括在频率精度和信号噪声比率之间没有妥协.
  • 它有效地结合了刺激信号模型,并有效地利用了被工件损坏的数据.
  • 该方法比现有技术有所改进,特别是在减少R组件对D组件的污染方面.

结论:

  • 开发的方法提供了一种更稳健,更准确的方法来分离DPOAE中的D和R组件.
  • 这一进步有可能提高DPOAE的诊断能力,以评估耳功能.
  • 该方法的适应性允许跟踪DPOAE的变化,以应对各种治疗.