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TRG-TRC007-EN iii
Contents
period one Fundamentals of Sound ..................................... 1
What is Sound? ....................................................... 2
Octave Bands ......................................................... 6
Sound Power and Sound Pressure ........................... 9
period two Sound Perception and Rating Methods ...... 15
Human Ear Response ............................................ 15
Single-Number Rating Methods ............................. 17
Octave-Band Rating Method .................................. 28
period three Acoustical Analysis ............................................ 29
Setting a Design Goal ............................................ 30
Source–Path–Receiver Analysis ............................. 32
Sound-Path Modeling ............................................ 37
Terms Used in Sound-Path Modeling ..................... 41
period four Equipment Sound Rating ................................ 47
Fields of Measurement ......................................... 48
HVAC Equipment Sound Rating ............................. 54
period five Review ................................................................... 63
Quiz ......................................................................... 68
Answers ................................................................ 70
Glossary ................................................................ 71