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相关概念视频

Echo01:06

Echo

603
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case,...
603
Mesh Analysis with Current Sources01:10

Mesh Analysis with Current Sources

1.5K
Mesh analysis becomes simpler when analyzing circuits with current sources, whether independent or dependent. The presence of current sources reduces the number of equations required for analysis. Two cases illustrate this:
Current Source in One Mesh: The analysis process is straightforward when a current source is found in only one mesh within the circuit. Mesh currents are assigned as usual, with the mesh containing the current source excluded from the analysis. Kirchhoff's voltage law...
1.5K
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

451
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
451

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相关实验视频

Updated: Sep 15, 2025

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe
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使用基于欧勒方程的麦克风阵列测量来检测移动源.

Mario Sroka1, Ennes Sarradj2, Mathias Lemke1

  • 1Numerical Fluid Dynamics, Technische Universitaet Berlin, Berlin 10623, Germany.

The Journal of the Acoustical Society of America
|July 16, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种基于辅助的方法,用于使用计算式空气声学检测移动的声音源. 该技术可以从有限的,杂的数据中准确地识别出源,并提供对其特征的见解.

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相关实验视频

Last Updated: Sep 15, 2025

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科学领域:

  • 计算航空声学 计算航空声学
  • 声源检测 声源检测 声源检测 声源检测
  • 附加方法 附加方法

背景情况:

  • 有限的测量样本对声源检测构成了挑战.
  • 移动的声音源需要专门的技术来准确地定位.
  • 计算航空声学为分析声音传播提供了一个框架.

研究的目的:

  • 开发和评估一种基于辅助的方法来检测移动的声音源.
  • 为了应对在声源识别中有限的测量数据的挑战.
  • 评估该方法对噪声和传感器错位的稳定性.

主要方法:

  • 一个基于助理的框架被应用于计算的航空声学模拟.
  • 标准基准案例涉及移动源被用于评估.
  • 用一个时间域的公式来计算附加的声音场.

主要成果:

  • 基于助理的方法准确地检测出使用短时间信号的移动声源.
  • 该方法证明了对噪声和空间麦克风错位的稳定性.
  • 附属声场提供了对源特性更深入的见解.

结论:

  • 拟议的基于辅助的方法对于检测有有限数据的移动声源是有效的.
  • 该技术为现实世界声学监控挑战提供了强大的解决方案.
  • 附加的配方增强了对源物理在非线性欧勒方程中的理解.