31 Noise \'maps\'

· show that the highest noise levels are usually found on roads

· do not show other sources of noise, e.g. when windows are open or people`s neighbours are in their

32 · ignore variations in people`s perceptions of noise

· have made people realize that the noise is a issue that must be dealt with

33 Problems caused by noise

• sleep disturbance

• increase in amount of stress

• effect on the of schoolchildren

34 Different types of noise Some noises can be considered pleasant e.g. the sound of a in a town

35 To investigate this, researchers may use methods from sciences e.g. questionnaires

36 What people want Plenty of activity in urban environments which are , but also allow people to relax

37 But architects and town planners

· do not get much in acoustics

· regard sound as the responsibility of engineers

38 Understanding sound as an art form

We need to know

· how sound relates to · what can be learnt from psychology about the effects of sound

39 · whether physics can help us understand the of sound

40 Virtual reality programs

· advantage: predict the effect of buildings

· current disadvantage: they are