关于此课程： 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.
此课程适用人群： This course is for graduate students and advanced undergraduates in acoustics, audio engineering, and noise control engineering. Practicing engineers and researchers in audio engineering and noise control, or students in engineering and physics disciplines, who want to gain an understanding sound and vibration concepts, are also welcome.
制作方： Korea Advanced Institute of Science and Technology
教学方： Yang-Hann Kim, Professor
Mechanical Engineering
| 级别 | 中级 |
| 承诺学习时间 | 3 hours / week |
| 语言 | English |
| 硬件要求 | No additional hardware is required |
| 如何通过 | 通过所有计分作业以完成课程。 |
| 用户评分 |
授课大纲
第 1 周
Introduction
The description goes here
1 个视频
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.'
8 个视频
- 视频: Lecture 1-1 Part 1. String Vibration
- 视频: Lecture 1-1 Part 2. One Dimensional Wave Equation
- 视频: Lecture 1-2 Part 1. Specific Impedance
- 视频: Lecture 1-2 Part 2. The Governing Equation of a String
- 视频: Lecture 1-2 Part 3. Driving Point Impedance
- 视频: Lecture 1-3 Use of Complex Function
- 视频: Week 1 Summary Video
已评分: Quiz for Week 1 (Vibration & Waves)
第 2 周
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.
8 个视频
- 视频: Lecture 2-1 Part 1. 1-Dimensional Wave Equation 1
- 视频: Lecture 2-1 Part 2. 1-Dimensional Wave Equation 2
- 视频: Lecture 2-1 Part 3. 1-Dimensional Wave Equation 3
- 视频: Week 2 Summary Video
- 视频: Lecture 2-2 Part 1. Acoustic Intensity & Energy 1
- 视频: Lecture 2-2 Part 2. Acoustic Intensity & Energy 2
- 视频: Lecture 2-2 Part 3. Units of Sound (dB Scale)
已评分: Quiz for Week 2-1 (Wave Equation)
已评分: Quiz for Week 2-2 (Basic Measurement)
第 3 周
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.
8 个视频
- 视频: Lecture 3-1 Part 1. Acoustic Intensity & Energy 1
- 视频: Lecture 3-1 Part 2. Acoustic Intensity & Energy 2
- 视频: Lecture 3-1 Part 3. The Units of Sound
- 视频: Lecture 3-2 Part 1. Review: Intensity & Units
- 视频: Lecture 3-2 Part 2. Listening Demonstration
- 视频: Lecture 3-2 Part 3. Solutions of the Wave Equation
- 视频: Week 3 Summary Video
已评分: Quiz for Week 3 (Wave Equation & Basic Measures)
第 4 周
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.
8 个视频
- 视频: Lecture 4-1 Part 1. Normal Incidence on a Flat Surface of Discontinuity 1
- 视频: Lecture 4-1 Part 2. Normal Incidence on a Flat Surface of Discontinuity 2
- 视频: Lecture 4-1 Part 3. The Mass Law 1
- 视频: Lecture 4-2 Part 1. Review: Normal Incidence on a Flat Surface of Discontinuity
- 视频: Lecture 4-2 Part 2. The Mass Law 2
- 视频: Lecture 4-2 Part 3. The Mass Law 3 (demonstration)
- 视频: Week 4 Summary Video
已评分: Quiz for Week 4 (Waves on a Flat Surface of Discontinuity)
第 5 周
Waves on a Flat Surface of Discontinuity 2
You will going to learn more about the waves on a discontinuity. With the Snell's Law, you will be able to find out the wave propagation after transmission and reflection on discontinuity.
8 个视频
- 视频: Lecture 5-1 Part 1. Review: The Mass Law
- 视频: Lecture 5-1 Part 2. Transmission Loss at a Partition
- 视频: Lecture 5-1 Part 3. Snell's Law 1
- 视频: Lecture 5-2 Part 1. Snell's Law 2
- 视频: Lecture 5-2 Part 2. Transmission and Reflection of an Infinite Plate
- 视频: Lecture 5-2 Part 3. Transmission and Reflection of a Finite Structure
- 视频: Week 5 Summary Video
已评分: Final Exam
常见问题解答
运作方式
Trabajo del curso
Cada curso es como un libro de texto interactivo, con videos pregrabados, cuestionarios y proyectos.
Ayuda de tus compañeros
Conéctate con miles de estudiantes y debate ideas y materiales del curso, y obtén ayuda para dominar los conceptos.
Certificados
Obtén reconocimiento oficial por tu trabajo y comparte tu éxito con amigos, compañeros y empleadores.
制作方
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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评分和审阅
Very informative and useful. The Teaching methodology is impressive.
Great course.
rv
I recommend this course if you want to learn acoustics. I enjoyed this course.