Fundamentals of Sound and Vibration

Abstract

Introduction Frank Fahy Sound and noise Vibration Signal processing and analysis Experimental methods and equipment Need for noise and vibration control technology Challenges of noise and vibration control technology Can software solve the problem? An exciting field Reference Fundamentals of acoustics David Thompson and Philip Nelson Introduction to sound One-dimensional wave equation Acoustic energy density and intensity The wave equation in three dimensions Multipole sources Enclosed sound fields Room acoustics Further reading Questions References Fundamentals of vibration Brian Mace Introduction Free vibration of an SDOF system Time-harmonic forced vibration of an SDOF system Response of an SDOF system to general excitation Multiple degrees of freedom systems Forced response of MDOF systems Continuous systems Concluding remarks Questions References Fundamentals of signal processing Joe Hammond and Paul White Introduction Fourier analysis of continuous time signals Some results in signal and system analysis Effects of sampling Random processes Input-output relationships and system identification Random processes and estimation Concluding remarks Questions References Noise control David Thompson Introduction Sound sources: categories and characterisation Noise source quantification Principles of noise control Sound radiation from vibrating structures Sound transmission through partitions Noise control enclosures Noise barriers Sound absorption Vibration control for noise reduction Further reading Questions References Human response to sound Ian Flindell Introduction Auditory anatomy and function Auditory capabilities and acoustic metrics Range of noise effects on people References Human responses to vibration Michael J. Griffin Introduction Measurement of vibration Whole-body vibration Motion sickness Hand-transmitted vibration References Measurement of audio-frequency sound in air Frank Fahy Introduction Condenser microphone Preamplifiers and transducer electronic data systems (TEDS) Calibration Specialised microphone applications Sound level meters and their use Sound intensity Applications of sound intensity measurement References Vibration testing Tim Waters Introduction General test set-up Sensors Using an electrodynamic shaker Using an instrumented hammer