In the previous chapter the physical aspects of sound and its measure ment was discussed. In this chapter the effects of noise on man are examined.
Hearing sound What is heard as sound does not always bear a simple relationship to the sound which is present. This is partly due to the mechanism by which the ear works and hence its response. The ear is a transducer converting sound pressure waves into signals which are sent to the brain (Figs. 7.1-7.3).