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# Introduction to Acoustics (Part 2)

### Overview

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Learners might have learned the basic concepts of the acoustics from the â€˜Introduction to Acoustics (Part 1).â€™ Now it is time to apply to the real situation and develop their own acoustical application. Learners will analyze the radiation, scattering, and diffraction phenomenon with the Kirchhoff â€“Helmholtz Equation. Then learners will design their own reverberation room or ducts that fulfill the condition they have set up.

### Syllabus

• INTRODUCTION
• You will be going to learn breathing sphere problem, then compare with the trembling sphere problem.
• K-H Equation & Baffled Piston Problem
• First, you will learn Kirchhoff-Helmholtz equation, then you will adapt into the baffled circular piston problem.
• DIFFRACTION AND SCATTERING
• Using Kirchhoff-Helmholtz equation that you have learned last week, you will apply into diffraction and scattering problem.
• REVERBERATION PERIOD AND ITS DESIGN APPLICATION
• Now you will learn very practical acoustical phenomenon. With reverberation period and Sabine's theorem, you will be able to design an acoustical room that satisfies given condition.
• WAVE PROPAGATION IN SPACE / DUCT ACOUSTICS
• For the last, you will learn Helmholtz Resonator and the phenomenon about the duct acoustics

Yang-Hann Kim

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