Bogen UTI312 User Manual download pdf (Page 14)

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77

SYSTEM DESIGN GUIDE

Typical Ambient Noise Level Typical Environments

Sound Pressure Levels Chart

Very

High

Noise

High

Noise

Medium

Noise

Low

Noise

85-95 dB

75-85 dB

65-75 dB

55-65 dB

Speech

Almost Impossible

To Hear

Speech is Difficult

To Hear

Must Raise Voice

to be Heard

Speech is Easy

To Hear

95 dB

85 dB

75 dB

65 dB

55 dB

Construction Site

Loud Machine Shop

Noisy Manufacturing

Printing Shop

Assembly Line

Crowded Bus/Transit Waiting Area

Machine Shop

Shipping/Warehouse

Supermarket (Peak Time)

Very Noisy Restaurant/Bar

Bank/Public Area

Department Store

Noisy Office

Restaurant/Bar

Supermarket

Transportation Waiting Room

Conversational Speech

Doctor’s Office

Hospital

Hotel Lobby

Quiet Office

Very Quiet Restaurant/Bar

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