list 5个序列
assignment 等级:入门
label 物理
chat_bubble_outline 语言 : 英语
card_giftcard 120点
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timer 总共15个小时

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Learn about acoustics and sound fields by using the concept of impedance. We will start with the fundamental concept of one-dimensional cases, understand the essentials, and also cover extended topics.

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课程大纲

Week 1: Vibration & Waves

  • How are time and space related? What about the relation between frequency and wavelength?
  • Does the characteristic impedance of medium determine reflection and transmission?
  • Do we well see the waves of a string in terms of driving point impedance?

 

Week 2: Acoustics Wave Equation and Its Basic Physical Measures

(1D acoustic wave equation, Acoustic Intensity and Energy, Units of Sound)

  • What are the relations of acoustic pressure, density, and particle velocity?
  • How do they make acoustic wave equation?
  • Is acoustic wave well analogous with one dimension string wave?

 

Week 3: Acoustics Wave Equation and Its Basic Physical Measures

(Acoustic Intensity and Energy, Solutions of the Wave equation, Demonstration: hearing system)

  • What about the relation between acoustic intensity and energy?
  • How does human hearing system measure sound and its characteristics?
  • Let us experience the change of sound in level and frequency!

 

Week 4: Waves on a Flat Surface of Discontinuity

(Normal incidence on a Flat Surface, The Mass Law)

  • How mathematically express the boundary conditions at discontinuity?
  • How does impedance at discontinuity determine reflection and transmission?
  • When can we use mass law?

 

 Week 5: Waves on a Flat Surface of Discontinuity

(Transmission Loss, Snell’s Law, Transmission and Reflection of an Infinite Plate/Finite Structure)

  • How different is the transmission loss of a flexible partition compared to the mass law?
  • Does the obliqueness of wave play a critical role to determine transmitted and reflected wave?
  • What are the roles of partition and fluid loading impedance to transmission loss?
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教师

  • Yang-Hann Kim - Mechanical Engineering
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内容设计师

Korea Advanced Institute of Science and Technology
The Korea Advanced Institute of Science and Technology (KAIST) was established in 1971 by the Korean government as the nation’s first research-intensive graduate school for science, engineering and technology. It has now grown into one of the world’s best universities, delivering top notch education and research programs for undergraduate and graduate students. KAIST encourages interdisciplinary and convergent research across a wide spectrum of disciplines, as well as strong collaborations with industry and global institutions.
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平台

Coursera

Coursera是一家数字公司,提供由位于加利福尼亚州山景城的计算机教师Andrew Ng和达芙妮科勒斯坦福大学创建的大型开放式在线课程。

Coursera与顶尖大学和组织合作,在线提供一些课程,并提供许多科目的课程,包括:物理,工程,人文,医学,生物学,社会科学,数学,商业,计算机科学,数字营销,数据科学 和其他科目。

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