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Accession Number N20120014574
Title Overview of an Indoor Sonic Boom Simulator at NASA Langley Research Center.
Publication Date Aug 2012
Media Count 12p
Personal Author J. Klos
Abstract A facility has been constructed at NASA Langley Research Center to simulate the soundscape inside residential houses that are exposed to environmental noise from aircraft. This controllable indoor listening environment, the Interior Effects Room, enables systematic study of parameters that affect psychoacoustic response. The single-room facility, built using typical residential construction methods and materials, is surrounded on adjacent sides by two arrays of loudspeakers in close proximity to the exterior walls. The arrays, containing 52 subwoofers and 52 mid-range speakers, have a usable bandwidth of 3 Hz to 5 kHz and sufficient output to allow study of sonic boom noise. In addition to these exterior arrays, satellite speakers placed inside the room are used to augment the transmitted sound with rattle and other audible contact induced noise that can result from low frequency excitation of a residential house. The layout of the facility, operational characteristics, acoustic characteristics and equalization approaches are summarized.
Keywords Aircraft noise
Hearing
Loudspeakers
Noise reduction
Psychoacoustics
Residential areas
Simulators
Sonic booms
Sound transmission
Supersonic flight

 
Source Agency National Aeronautics and Space Administration
NTIS Subject Category 46A - Acoustics
68B - Noise Pollution & Control
89B - Architectural Design & Environmental Engineering
Corporate Author National Aeronautics and Space Administration, Hampton, VA. Langley Research Center.
Document Type Conference proceedings
Title Note N/A
NTIS Issue Number 1308
Contract Number N/A

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