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相关概念视频

Masking and Demasking Agents01:19

Masking and Demasking Agents

EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on the metal...

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相关实验视频

Updated: May 19, 2026

Testing Tactile Masking between the Forearms
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证据表明,在同时掩盖中进行主动和追溯时间模式分析)

Bernhard Laback1, Hisaaki Tabuchi2, Armin Kohlrausch3

  • 1Austrian Academy of Sciences, Acoustics Research Institute, Wohllebengasse 12-14, 1040 Vienna, Austria.

The Journal of the Acoustical Society of America
|June 10, 2024
PubMed
概括

滴听,辅助的振幅调制 (AM) 封面规律性,受刺激环境的影响. 在掩饰器和光标之间对AM峰值 (AMP) 的时间模式分析会影响听觉感知.

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科学领域:

  • 听觉感知是一种听觉感知.
  • 精神声学是一种精神声学.
  • 信号处理 信号处理

背景情况:

  • 掩饰器的振幅调制 (AM) 可以减少纯色目标的掩饰,这表明可以倾听.
  • 倾听效率可能取决于前体或后体刺激提供的时间上下文.

研究的目的:

  • 为了调查滴听效率是否通过面罩和周围刺激之间的AM峰值 (AMP) 的匹配来调节.
  • 探索时间模式分析在调制声音的听觉感知中的作用.

主要方法:

  • 测量纯色目标的掩盖值是在正常听觉的听众身上进行的.
  • 施罗德相和复合体与不同的AMP被用作掩饰器和光标.
  • 时间间隙和刺激之间的频率差异 (F0) 被操纵.

主要成果:

  • 值升高 (干扰) 发生在平面光标和峰值掩盖器上,表明主动和追溯时间分析.
  • 当masker AMP与前体匹配时,观察到值下降 (促进),这表明主动处理.
  • 干扰和促进持续存在时间差距,但随着F0差异消失,并且随着水平的降低而减少.

结论:

  • 封面规律性在滴听中发挥着重要作用,特别是当掩盖器和光标F0匹配时,形成一个单一的感知流.
  • 这些发现表明一种时间域形式的共调掩盖释放,受AM封面特征的时间模式分析的影响.