Reduction of exhaust noise by micropore and diffuser mufflers

Conference · Fri Jan 01 04:00:00 EST 1982 · Proc. - Int. Conf. Noise Control Eng.; (United States)

OSTI ID:5912850

Maa, D Y

Exhaust noise is one of the most important noise sources which pollute our environment and its reduction is sought for in many branches of industry. Micropore mufflers have been developed to suppress the exhaust noise, especially that from high presure blow-offs, on the principle that the main part of the noise spectrum is shifted to ultrasonic frequencies by replacing the exhaust nozzle with a large number of minute nozzles, and thus to render it harmless to people and easily attenuated in air.

• Research Organization: Inst. of Acoustics, Peking, China
• OSTI ID: 5912850
• Conference Information: Journal Name: Proc. - Int. Conf. Noise Control Eng.; (United States) Journal Volume: 2
• Country of Publication: United States
• Language: English

Related Subjects

560400* -- Other Environmental Pollutant Effects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACOUSTICS
CALCULATION METHODS
CONTROL
EXHAUST SYSTEMS
FREQUENCY ANALYSIS
NOISE POLLUTION CONTROL
POLLUTION CONTROL
TURBULENCE