38.1 Introduction

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This chapter considers the characteristics of human hearing. After a brief description of the anatomy

and function of the hearing mechanism, those aspects of hearing that are important in noise control

are discussed. The perception of sound by the human ear is a complicated process, dependent both

on the frequency and pressure amplitude of the sound. We shall consider the structure of the ear and

hearing mechanism. We will also briefly discuss various means of measuring the psychological effects

of noise.

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