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A platform for research: civil engineering, architecture and urbanism
Attenuation of sound in lined ducts with and without air flow
Review of literature on studies of transmission of sound in lined ducts; attenuation studies conducted under 2 conditions that include speaker noise only with no air flow, and speaker noise with air flow rates of from 2000 to 5000 fpm are discussed; to simulate broad-band sound spectrum typical of air-conditioning equipment, random-noise generator was used as noise source coupled to 15-in. speaker through amplifier.
Attenuation of sound in lined ducts with and without air flow
Review of literature on studies of transmission of sound in lined ducts; attenuation studies conducted under 2 conditions that include speaker noise only with no air flow, and speaker noise with air flow rates of from 2000 to 5000 fpm are discussed; to simulate broad-band sound spectrum typical of air-conditioning equipment, random-noise generator was used as noise source coupled to 15-in. speaker through amplifier.
Attenuation of sound in lined ducts with and without air flow
ASHRAE -- Trans
Kerka, W.F. (author)
1963
10 pages
Article (Journal)
English
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