Intro to Acoustics (Part 1)

Korea Advanced Institute of Science and Technology(KAIST)

Intro to Acoustics (Part 1)

Instructor: Yang-Hann Kim

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6 modules

Gain insight into a topic and learn the fundamentals.

143 reviews

Intermediate level

Some related experience required

1 week to complete

at 10 hours a week

Flexible schedule

Learn at your own pace

6 modules

Gain insight into a topic and learn the fundamentals.

143 reviews

Intermediate level

Some related experience required

1 week to complete

at 10 hours a week

Flexible schedule

Learn at your own pace

Skills you'll gain

Details to know

Shareable certificate

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Assessments

6 assignments

Taught in English

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There are 6 modules in this course

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.

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What's included

1 video

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.'

What's included

8 videos1 assignment

8 videos Total 128 minutes

Week 1: Introduction 2 minutes
Lecture 1-1 Part 1. String Vibration 19 minutes
Lecture 1-1 Part 2. One Dimensional Wave Equation 26 minutes
Lecture 1-2 Part 1. Specific Impedance 21 minutes
Lecture 1-2 Part 2. The Governing Equation of a String 17 minutes
Lecture 1-2 Part 3. Driving Point Impedance 21 minutes
Lecture 1-3 Use of Complex Function 18 minutes
Week 1 Summary Video 3 minutes

1 assignment Total 30 minutes

Quiz for Week 1 (Vibration & Waves) 30 minutes

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.

What's included

8 videos2 assignments

8 videos Total 132 minutes

Week 2: Introduction 2 minutes
Lecture 2-1 Part 1. 1-Dimensional Wave Equation 1 20 minutes
Lecture 2-1 Part 2. 1-Dimensional Wave Equation 2 16 minutes
Lecture 2-1 Part 3. 1-Dimensional Wave Equation 3 27 minutes
Week 2 Summary Video 4 minutes
Lecture 2-2 Part 1. Acoustic Intensity & Energy 1 16 minutes
Lecture 2-2 Part 2. Acoustic Intensity & Energy 2 14 minutes
Lecture 2-2 Part 3. Units of Sound (dB Scale) 34 minutes

2 assignments Total 60 minutes

Quiz for Week 2-1 (Wave Equation) 30 minutes
Quiz for Week 2-2 (Basic Measurement) 30 minutes

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.

What's included

8 videos1 assignment

8 videos Total 129 minutes

Week 3: Introduction 1 minute
Lecture 3-1 Part 1. Acoustic Intensity & Energy 1 36 minutes
Lecture 3-1 Part 2. Acoustic Intensity & Energy 2 14 minutes
Lecture 3-1 Part 3. The Units of Sound 16 minutes
Lecture 3-2 Part 1. Review: Intensity & Units 12 minutes
Lecture 3-2 Part 2. Listening Demonstration 28 minutes
Lecture 3-2 Part 3. Solutions of the Wave Equation 20 minutes
Week 3 Summary Video 2 minutes

1 assignment Total 14 minutes

Quiz for Week 3 (Wave Equation & Basic Measures) 14 minutes

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.

What's included

8 videos1 assignment

8 videos Total 126 minutes

Week 4: Introduction 3 minutes
Lecture 4-1 Part 1. Normal Incidence on a Flat Surface of Discontinuity 1 22 minutes
Lecture 4-1 Part 2. Normal Incidence on a Flat Surface of Discontinuity 2 22 minutes
Lecture 4-1 Part 3. The Mass Law 1 15 minutes
Lecture 4-2 Part 1. Review: Normal Incidence on a Flat Surface of Discontinuity 16 minutes
Lecture 4-2 Part 2. The Mass Law 2 29 minutes
Lecture 4-2 Part 3. The Mass Law 3 (demonstration) 16 minutes
Week 4 Summary Video 3 minutes

1 assignment Total 30 minutes

Quiz for Week 4 (Waves on a Flat Surface of Discontinuity) 30 minutes

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.

What's included

8 videos1 assignment

8 videos Total 131 minutes

Week 5: Introduction 2 minutes
Lecture 5-1 Part 1. Review: The Mass Law 30 minutes
Lecture 5-1 Part 2. Transmission Loss at a Partition 17 minutes
Lecture 5-1 Part 3. Snell's Law 1 15 minutes
Lecture 5-2 Part 1. Snell's Law 2 22 minutes
Lecture 5-2 Part 2. Transmission and Reflection of an Infinite Plate 29 minutes
Lecture 5-2 Part 3. Transmission and Reflection of a Finite Structure 14 minutes
Week 5 Summary Video 3 minutes