Foundations of Acoustics: Vibrations to Wave Propagation
Master fundamental acoustic concepts from vibrations to wave equations, using the impedance approach for practical applications.
Master fundamental acoustic concepts from vibrations to wave equations, using the impedance approach for practical applications.
This intermediate-level course introduces the fundamental principles of acoustics using the concept of impedance. Over six modules, students progress from basic vibrations and waves to complex acoustic phenomena. The curriculum begins with one-dimensional vibrations and waves, demonstrating how vibration can be conceptualized as a type of wave, both mathematically and physically. Students will derive the one-dimensional wave equation from string vibration and explore acoustic intensity, energy, and the decibel scale. The course then advances to wave behavior at discontinuities, covering topics such as normal incidence, the mass law, and Snell's Law. Throughout the course, emphasis is placed on practical applications and physical insights, with demonstrations and listening exercises to reinforce learning. By the end, students will have a solid foundation in acoustic theory and its real-world applications.
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What you'll learn
Understand the relationship between vibration and waves in one-dimensional systems
Derive and interpret the one-dimensional wave equation
Master the concept of impedance and its application in acoustics
Calculate and interpret acoustic intensity and energy
Understand and apply the decibel scale in acoustic measurements
Analyze wave behavior at discontinuities, including reflection and transmission
Skills you'll gain
This course includes:
654 Minutes PreRecorded video
6 quizzes
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There are 6 modules in this course
This course provides a comprehensive introduction to the fundamentals of acoustics, focusing on the concept of impedance as a unifying principle. The curriculum is structured to build a strong theoretical foundation while emphasizing practical applications. Starting with basic vibrations and waves, students learn to derive and understand the one-dimensional wave equation, first through the example of string vibration. The course then progresses to more complex acoustic concepts, including specific and driving point impedance, acoustic intensity and energy, and the decibel scale. A significant portion of the course is dedicated to understanding wave behavior at discontinuities, covering topics such as normal incidence on flat surfaces, the mass law, and Snell's Law. Throughout the course, mathematical concepts are balanced with physical insights and real-world applications. Students engage with the material through video lectures, quizzes, and practical demonstrations, including listening exercises to connect theory with audible phenomena. By the end of the course, learners will have developed a solid understanding of acoustic principles and their applications, preparing them for more advanced studies in acoustics or related fields.
Introduction
Module 1 · 9 Minutes to complete
Vibration and Waves
Module 2 · 2 Hours to complete
Acoustic Wave Equation
Module 3 · 3 Hours to complete
Acoustic Wave Equation and its Basic Physical Measures
Module 4 · 2 Hours to complete
Waves on a Flat Surface of Discontinuity 1
Module 5 · 2 Hours to complete
Waves on a Flat Surface of Discontinuity 2
Module 6 · 2 Hours to complete
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Instructor
Pioneering Advances in Acoustics and Noise Control
Professor Yang-Hann Kim specializes in acoustics and noise/vibration, utilizing experimental approaches and digital signal processing to drive innovative research. His diverse projects encompass sound field visualization, noise source identification through array microphones, detection and estimation of moving noise sources, and active noise and vibration control. Recently recognized as a pioneer in sound visualization and manipulation, he focuses on creating targeted sound fields, private sound zones, and 3D listening environments. Joining KAIST as an Associate Professor in 1989, he previously served at the Korea Institute of Technology and was a research assistant at MIT while earning his Ph.D. in mechanical engineering. With over 100 published papers and numerous awards, including the Rossing Prize from the Acoustical Society of America, Professor Kim is also a Fellow of the Acoustical Society of America and serves on various editorial boards, further solidifying his impact in the field of acoustics.
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4.5 course rating
139 ratings
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