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.
Intro to Acoustics (Part 1)
Offered By
Korea Advanced Institute of Science and Technology
Syllabus - What you will learn from this course
Week
1Introduction
The description goes here
1 video (Total 10 min)
1 video
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 videos (Total 128 min), 1 quiz
8 videos
Lecture 1-1 Part 1. String Vibration 19m
Lecture 1-1 Part 2. One Dimensional Wave Equation 25m
Lecture 1-2 Part 1. Specific Impedance 20m
Lecture 1-2 Part 2. The Governing Equation of a String 17m
Lecture 1-2 Part 3. Driving Point Impedance 21m
Lecture 1-3 Use of Complex Function 17m
Week 1 Summary Video3m
1 practice exercise
Quiz for Week 1 (Vibration & Waves)12m
Week
2Acoustic 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 videos (Total 132 min), 2 quizzes
8 videos
Lecture 2-1 Part 1. 1-Dimensional Wave Equation 1 19m
Lecture 2-1 Part 2. 1-Dimensional Wave Equation 2 16m
Lecture 2-1 Part 3. 1-Dimensional Wave Equation 3 26m
Week 2 Summary Video3m
Lecture 2-2 Part 1. Acoustic Intensity & Energy 116m
Lecture 2-2 Part 2. Acoustic Intensity & Energy 213m
Lecture 2-2 Part 3. Units of Sound (dB Scale) 33m
2 practice exercises
Quiz for Week 2-1 (Wave Equation)6m
Quiz for Week 2-2 (Basic Measurement)6m
Week
3Acoustic 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 videos (Total 129 min), 1 quiz
8 videos
Lecture 3-1 Part 1. Acoustic Intensity & Energy 135m
Lecture 3-1 Part 2. Acoustic Intensity & Energy 214m
Lecture 3-1 Part 3. The Units of Sound 15m
Lecture 3-2 Part 1. Review: Intensity & Units 11m
Lecture 3-2 Part 2. Listening Demonstration 27m
Lecture 3-2 Part 3. Solutions of the Wave Equation 19m
Week 3 Summary Video2m
1 practice exercise
Quiz for Week 3 (Wave Equation & Basic Measures)14m
Week
4Waves 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 videos (Total 126 min), 1 quiz
8 videos
Lecture 4-1 Part 1. Normal Incidence on a Flat Surface of Discontinuity 1 22m
Lecture 4-1 Part 2. Normal Incidence on a Flat Surface of Discontinuity 2 22m
Lecture 4-1 Part 3. The Mass Law 1 14m
Lecture 4-2 Part 1. Review: Normal Incidence on a Flat Surface of Discontinuity 15m
Lecture 4-2 Part 2. The Mass Law 2 29m
Lecture 4-2 Part 3. The Mass Law 3 (demonstration) 15m
Week 4 Summary Video3m
1 practice exercise
Quiz for Week 4 (Waves on a Flat Surface of Discontinuity)14m
Instructor
Yang-Hann Kim
ProfessorMechanical Engineering
About 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.
Frequently Asked Questions
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Once you enroll for a Certificate, you’ll have access to all videos, quizzes, and programming assignments (if applicable). Peer review assignments can only be submitted and reviewed once your session has begun. If you choose to explore the course without purchasing, you may not be able to access certain assignments.
What will I get if I purchase the Certificate?
When you purchase a Certificate you get access to all course materials, including graded assignments. Upon completing the course, your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile. If you only want to read and view the course content, you can audit the course for free.
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