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Titlebook: Lecture Notes on Acoustics and Noise Control; Hejie Lin,Turgay Bengisu,Zissimos P. Mourelatos Textbook 2021 The Editor(s) (if applicable)

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21#
發(fā)表于 2025-3-25 06:19:05 | 只看該作者
Sound Pressure Levels and Octave Bands,In the field of noise control, noise is quantified by sound pressure level (SPL). SPL can be either unweighted or weighted. In this chapter, you will learn how to calculate both unweighted SPL and weighted SPL. This chapter is divided into four sections and is summarized as follows:
22#
發(fā)表于 2025-3-25 08:26:23 | 只看該作者
Room Acoustics and Acoustical Partitions,This chapter introduces room acoustics and acoustical partitions. Room acoustics studies the change of energy density at different locations due to the conditions of direct and reflected sound. Acoustical partitions are used to reduce noise from a source.
23#
發(fā)表于 2025-3-25 13:47:57 | 只看該作者
24#
發(fā)表于 2025-3-25 17:38:11 | 只看該作者
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25#
發(fā)表于 2025-3-25 23:43:46 | 只看該作者
Solutions of Acoustic Wave Equation, chapter. We will limit the scope of this chapter to only one-dimensional plane waves. Spherical waves will be constructed by solving the acoustic wave equation derived in spherical coordinate systems in Chap. ..
26#
發(fā)表于 2025-3-26 00:57:59 | 只看該作者
27#
發(fā)表于 2025-3-26 04:21:24 | 只看該作者
Acoustic Waveguides,re-reflection) and a backward traveling wave (post-reflection). In this chapter, we will study the propagation of plane waves in acoustic waveguides, as shown on the right-hand side of the figure below. In acoustic waveguides, traveling waves propagate along waveguides and have no returning waves; standing waves exist in lateral directions.
28#
發(fā)表于 2025-3-26 09:58:31 | 只看該作者
29#
發(fā)表于 2025-3-26 14:07:18 | 只看該作者
Textbook 2021sics. It is designed for those who are new to acoustics and noise control, and includes all the necessary material for a comprehensive understanding of the topic. It is written in lecture-note style and can be easily adapted to an acoustics-related one semester course at the senior undergraduate or
30#
發(fā)表于 2025-3-26 18:00:44 | 只看該作者
Complex Numbers for Harmonic Functions,complex exponential functions. Even though we are more familiar with trigonometric functions such as a cosine or a sine function, the complex exponential functions are commonly used due to their compact and elegant form for derivation and integration in vibration and acoustic analysis.
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