Acoustics
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In our eReader you can find the full English version of the book. Read Acoustics Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Acoustics
What reading level is Acoustics book?
To quickly assess the difficulty of the text, read a short excerpt:
The following assumptions are made: Floor, Concrete.
Side-walls, Plaster on Tile.
Ceiling, Plaster on metal lath.
Area of glass windows, 500 square feet.
450 seats.
Correct conditions desired, when 70 persons are present.
Sabine formula for reverbera- tion is: ^j r = k- a where "r" equals reverberation in seconds; V equals volume in cubic feet; "a" equals open window units of sound absorption; "k" is a constant and is .05 when foot- second units are used. A sound is used having an intensity of ...1,000,000 times the minimum audible intensity and of pitch one octave above Middle "C" on the piano.
Area concrete floor 60' x 100' = 6,000 sq. ft.
Co-efficient of absorption of concrete is .015.
6,000 sq. ft. X .015 =P(? units.
Area side-wall surfaces (60-1-60-1- lOO-f 100) 20 = 6400 sq. ft.
Area of glass windows = 500 sq. ft.
Net area plaster on hollow tile =5900 sq. ft.
Co-efBcient of plaster on hollow tile is .025.
5900 sq. ft. X .025 = 147.5 units.
Area of glass 500 sq. ft.; co-efficient .027.
What to read after Acoustics?
You can find similar books in the "Read Also" column, or choose other free books by Hannam, George C to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The following assumptions are made: Floor, Concrete.
Side-walls, Plaster on Tile.
Ceiling, Plaster on metal lath.
Area of glass windows, 500 square feet.
450 seats.
Correct conditions desired, when 70 persons are present.
Sabine formula for reverbera- tion is: ^j r = k- a where "r" equals reverberation in seconds; V equals volume in cubic feet; "a" equals open window units of sound absorption; "k" is a constant and is .05 when foot- second units are used. A sound is used having an intensity of ...1,000,000 times the minimum audible intensity and of pitch one octave above Middle "C" on the piano.
Area concrete floor 60' x 100' = 6,000 sq. ft.
Co-efficient of absorption of concrete is .015.
6,000 sq. ft. X .015 =P(? units.
Area side-wall surfaces (60-1-60-1- lOO-f 100) 20 = 6400 sq. ft.
Area of glass windows = 500 sq. ft.
Net area plaster on hollow tile =5900 sq. ft.
Co-efBcient of plaster on hollow tile is .025.
5900 sq. ft. X .025 = 147.5 units.
Area of glass 500 sq. ft.; co-efficient .027.
What to read after Acoustics?
You can find similar books in the "Read Also" column, or choose other free books by Hannam, George C to read onlineMoreLess
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