ION the room, being equal to about .171V in the present experiments,but dependent on the initial intensity of the sound; and finally,that by substituting the value of k thus determined, and also the S s k ?^ ?v, ■^ ==; ::--^ .^ ■^ -^ *=— ~^ ~-~ ^^ 5. -7- ^ -== == =*3 =^ . . ^ J!!;;;; ^ -~~ j^ =… … O 10 20 30 M SO 60 70 80 90 100 110 120 130 140 150 Length of cushions in meters Pig. 9. Curves showing the relation of the duration of the residualsound to the added absorbing material, — rooms 8 to 12. value of a, the absorbing power of the walls, and of x, the absorbingpower of the furniture and…
Architectural acoustics
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