This course introduces acoustics by using the concept of impedance. The course starts with vibrations and waves, demonstrating how vibration can be envisaged as a kind of wave, mathematically and physically. They are realized by one-dimensional examples, which provide mathematically simplest but clear enough physical insights. Then the part 1 ends with explaining waves on a flat surface of discontinuity, demonstrating how propagation characteristics of waves change in space where there is a distributed impedance mismatch.
提供方
Intro to Acoustics (Part 1)
Korea Advanced Institute of Science and Technology(KAIST)
课程信息
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Learner Career Outcomes
33%
通过此课程获得实实在在的工作福利
Learner Career Outcomes
33%
通过此课程获得实实在在的工作福利
100% 在线
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中级
完成时间大约为17 小时
建议：3 hours / week
英语（English）
字幕：英语（English）
教学大纲 - 您将从这门课程中学到什么
完成时间为 2 小时
Vibration and Waves
You will going to learn basic concepts of vibration and waves for this week. From the vibration of string, you will be able to derive one dimensional wave equation. Then it will be explained with the concept of 'Impedance.'
完成时间为 2 小时
8 个视频 （总计 128 分钟）, 1 个测验
8 个视频
Lecture 1-1 Part 1. String Vibration 19分钟
Lecture 1-1 Part 2. One Dimensional Wave Equation 25分钟
Lecture 1-2 Part 1. Specific Impedance 20分钟
Lecture 1-2 Part 2. The Governing Equation of a String 17分钟
Lecture 1-2 Part 3. Driving Point Impedance 21分钟
Lecture 1-3 Use of Complex Function 17分钟
Week 1 Summary Video3分钟
1 个练习
Quiz for Week 1 (Vibration & Waves)12分钟
完成时间为 2 小时
Acoustic Wave Equation
Earlier part of this week, you will learn three fundamental physical measures that explain one dimensional wave equation. After that, you will briefly learn about basic concepts of acoustic intensity and energy.
完成时间为 2 小时
8 个视频 （总计 132 分钟）, 2 个测验
8 个视频
Lecture 2-1 Part 1. 1-Dimensional Wave Equation 1 19分钟
Lecture 2-1 Part 2. 1-Dimensional Wave Equation 2 16分钟
Lecture 2-1 Part 3. 1-Dimensional Wave Equation 3 26分钟
Week 2 Summary Video3分钟
Lecture 2-2 Part 1. Acoustic Intensity & Energy 116分钟
Lecture 2-2 Part 2. Acoustic Intensity & Energy 213分钟
Lecture 2-2 Part 3. Units of Sound (dB Scale) 33分钟
2 个练习
Quiz for Week 2-1 (Wave Equation)6分钟
Quiz for Week 2-2 (Basic Measurement)6分钟
完成时间为 2 小时
Acoustic Wave Equation and its Basic Physical Measures
On this week, you will learn deeply into acoustic intensity and energy. Then you will get the concept of units of sound, or dB scale with listening to various sound. At the end, you will be able to derive the solutions of the wave equation.
完成时间为 2 小时
8 个视频 （总计 129 分钟）, 1 个测验
8 个视频
Lecture 3-1 Part 1. Acoustic Intensity & Energy 135分钟
Lecture 3-1 Part 2. Acoustic Intensity & Energy 214分钟
Lecture 3-1 Part 3. The Units of Sound 15分钟
Lecture 3-2 Part 1. Review: Intensity & Units 11分钟
Lecture 3-2 Part 2. Listening Demonstration 27分钟
Lecture 3-2 Part 3. Solutions of the Wave Equation 19分钟
Week 3 Summary Video2分钟
1 个练习
Quiz for Week 3 (Wave Equation & Basic Measures)14分钟
完成时间为 2 小时
Waves on a Flat Surface of Discontinuity 1
You will now learn when the waves meet on a flat surface of discontinuity. It will be explained with the mass law of wave phenomena.
完成时间为 2 小时
8 个视频 （总计 126 分钟）, 1 个测验
8 个视频
Lecture 4-1 Part 1. Normal Incidence on a Flat Surface of Discontinuity 1 22分钟
Lecture 4-1 Part 2. Normal Incidence on a Flat Surface of Discontinuity 2 22分钟
Lecture 4-1 Part 3. The Mass Law 1 14分钟
Lecture 4-2 Part 1. Review: Normal Incidence on a Flat Surface of Discontinuity 15分钟
Lecture 4-2 Part 2. The Mass Law 2 29分钟
Lecture 4-2 Part 3. The Mass Law 3 (demonstration) 15分钟
Week 4 Summary Video3分钟
1 个练习
Quiz for Week 4 (Waves on a Flat Surface of Discontinuity)14分钟
4.4
11 条评论
来自Intro to Acoustics (Part 1)的热门评论
I heard something in this course which I have never heard before. The professor emphasizes on physical prospective of this course intentionally and this is very useful to describe the concept.
I recommend this course if you want to learn acoustics. I enjoyed this course.
讲师
Yang-Hann Kim
ProfessorMechanical Engineering
关于 Korea Advanced Institute of Science and Technology(KAIST)
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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