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)
oferecido por
Instituto Avançado de Ciência e Tecnologia da Coreia do SulInstituto Avançado de Ciência e Tecnologia da Coreia do Sul
Programa - O que você aprenderá com este curso
Semana
1Introduction
The description goes here
1 vídeo (total de (Total 10 mín.) min)
1 vídeos
Introduction9min
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 vídeos (total de (Total 128 mín.) min), 1 teste
8 videos
Lecture 1-1 Part 1. String Vibration 19min
Lecture 1-1 Part 2. One Dimensional Wave Equation 25min
Lecture 1-2 Part 1. Specific Impedance 20min
Lecture 1-2 Part 2. The Governing Equation of a String 17min
Lecture 1-2 Part 3. Driving Point Impedance 21min
Lecture 1-3 Use of Complex Function 17min
Week 1 Summary Video3min
1 exercício prático
Quiz for Week 1 (Vibration & Waves)12min
Semana
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 vídeos (total de (Total 132 mín.) min), 2 testes
8 videos
Week 2: Introduction 1min
Lecture 2-1 Part 1. 1-Dimensional Wave Equation 1 19min
Lecture 2-1 Part 2. 1-Dimensional Wave Equation 2 16min
Lecture 2-1 Part 3. 1-Dimensional Wave Equation 3 26min
Week 2 Summary Video3min
Lecture 2-2 Part 1. Acoustic Intensity & Energy 116min
Lecture 2-2 Part 2. Acoustic Intensity & Energy 213min
Lecture 2-2 Part 3. Units of Sound (dB Scale) 33min
2 exercícios práticos
Quiz for Week 2-1 (Wave Equation)6min
Quiz for Week 2-2 (Basic Measurement)6min
Semana
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 vídeos (total de (Total 129 mín.) min), 1 teste
8 videos
Week 3: Introduction 1min
Lecture 3-1 Part 1. Acoustic Intensity & Energy 135min
Lecture 3-1 Part 2. Acoustic Intensity & Energy 214min
Lecture 3-1 Part 3. The Units of Sound 15min
Lecture 3-2 Part 1. Review: Intensity & Units 11min
Lecture 3-2 Part 2. Listening Demonstration 27min
Lecture 3-2 Part 3. Solutions of the Wave Equation 19min
Week 3 Summary Video2min
1 exercício prático
Quiz for Week 3 (Wave Equation & Basic Measures)14min
Semana
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 vídeos (total de (Total 126 mín.) min), 1 teste
8 videos
Week 4: Introduction 3min
Lecture 4-1 Part 1. Normal Incidence on a Flat Surface of Discontinuity 1 22min
Lecture 4-1 Part 2. Normal Incidence on a Flat Surface of Discontinuity 2 22min
Lecture 4-1 Part 3. The Mass Law 1 14min
Lecture 4-2 Part 1. Review: Normal Incidence on a Flat Surface of Discontinuity 15min
Lecture 4-2 Part 2. The Mass Law 2 29min
Lecture 4-2 Part 3. The Mass Law 3 (demonstration) 15min
Week 4 Summary Video3min
1 exercício prático
Quiz for Week 4 (Waves on a Flat Surface of Discontinuity)14min
Instrutores
Yang-Hann Kim
ProfessorMechanical Engineering
Sobre Instituto Avançado de Ciência e Tecnologia da Coreia do SulInstituto Avançado de Ciência e Tecnologia da Coreia do Sul
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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