8/16/2019 Ass2 Broadcast Final

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Sound Source Sound Power (W) Sound Power

Level

(db ref 10-12 W)

Ambulance siren 1 120

City trac (insidecar)

3.16 x 10-4

85

Classrooms 10-8 40!and drill 6.31 x 10-3 98!and-"eld circular

saw at 1 metre

316.23 x 10-3 115

#2-$au$e s"ot$un 10000 160Lar$e Lecture

room

3.16 x 10-9 35

Lar$e %ces 3.16 x 10-8 – 1 x 10-7 45-50Level of !earin$

Loss

1 x 10-3 – 3.16 x 10-3 90-95

&usic room 10-9 30'ewsaer ress 3.16 x 10-3 95%ces 10-8-3.16 x 10-8 40-45Pain in ears 3.16 125Passen$er car 0

*m er "our at 20

metres

3.16 x 10-6

65

Pneumatic c"ier

at 1 metre

316.23 x 10-3 115

Power mower 0.05 107Sand +lastin$ 316.23 x 10-3 115Subway train at

200,

3.16 x 10-3 95

ele"one dial

tone

0.0001 80

e.tile loom 0.02 103rain w"istle/

truc* trac

1 x 10-3 90

Was"in$ mac"ine 10−5 70

8/16/2019 Ass2 Broadcast Final

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List of Sound Sources with their computed power and 

their corresponding sound power level