Add to ORKGProgress is reported in the development of hardware and software for an experiment to detect and measure sound transmission through air
The major tasks undertaken were (1) analytical and laboratory experiments on the propagation of soun...
Long range sound propagation is an aspect of many acoustical problems ranging from en route aircraft...
Sound becomes inaudible if it consists of frequencies lower than 20 Hz, i.e. the human hearing thres...
Parts were fabricated for the acoustic ground impedance meter and the instrument was tested. A rubbe...
The fabrication of parts for the acoustic ground impedance meter was completed, and the instrument t...
The infrasonic signatures generated by the main blade slap rate of a helicoper were used in an effor...
The final report for progress during the period from 15 Nov. 1988 to 14 Nov. 1991 is presented. Rese...
The results of an exploratory NASA study, leading to a better understanding of the effects of meteor...
The propagation of sound waves at infrasonic frequencies (oscillation periods 1.0 - 1000 seconds) in...
Probe separates sound waves from turbulent flow pressure fluctuations in ducted airstreams by using ...
Extreme Endeavors is collaborating with NASA Langley Research Center (LaRC) in the development, test...
Exposure pattern development, propagation through inhomogeneous atmosphere, and effects on people an...
Thirty sets of sound absorption measurements in air at a pressure of 1 atmosphere are presented at t...
This report describes the activities during the fifth six month period of the investigation of acous...
The article of record as published may be found at http://dx.doi.org/10.1121/1.400176Best current ex...
The major tasks undertaken were (1) analytical and laboratory experiments on the propagation of soun...
Long range sound propagation is an aspect of many acoustical problems ranging from en route aircraft...
Sound becomes inaudible if it consists of frequencies lower than 20 Hz, i.e. the human hearing thres...
Parts were fabricated for the acoustic ground impedance meter and the instrument was tested. A rubbe...
The fabrication of parts for the acoustic ground impedance meter was completed, and the instrument t...
The infrasonic signatures generated by the main blade slap rate of a helicoper were used in an effor...
The final report for progress during the period from 15 Nov. 1988 to 14 Nov. 1991 is presented. Rese...
The results of an exploratory NASA study, leading to a better understanding of the effects of meteor...
The propagation of sound waves at infrasonic frequencies (oscillation periods 1.0 - 1000 seconds) in...
Probe separates sound waves from turbulent flow pressure fluctuations in ducted airstreams by using ...
Extreme Endeavors is collaborating with NASA Langley Research Center (LaRC) in the development, test...
Exposure pattern development, propagation through inhomogeneous atmosphere, and effects on people an...
Thirty sets of sound absorption measurements in air at a pressure of 1 atmosphere are presented at t...
This report describes the activities during the fifth six month period of the investigation of acous...
The article of record as published may be found at http://dx.doi.org/10.1121/1.400176Best current ex...
The major tasks undertaken were (1) analytical and laboratory experiments on the propagation of soun...
Long range sound propagation is an aspect of many acoustical problems ranging from en route aircraft...
Sound becomes inaudible if it consists of frequencies lower than 20 Hz, i.e. the human hearing thres...