Helicopter Noise Analysis--Round-Robin Test

Helicopter Noise Analysis--Round-Robin Test

This report documents the results of an international round robin test on the analysis of helicopter noise. Digital spectral noise data of a 3.5-second simulated helicopter flyover and identical analog test tapes containing helicopter noise data, reference signals, test tones and time code signals w...

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Bibliographische Detailangaben
1. Verfasser: Rickley,Edward J
Format: Report
Sprache:eng
Schlagworte:
ACOUSTIC DATA
ACOUSTIC MEASUREMENT
ACOUSTIC SIGNALS
Acoustics
AIRCRAFT NOISE
ANALOG SYSTEMS
CORRECTIONS
DATA REDUCTION
DIGITAL SYSTEMS
Helicopters
INDEXES(RATIOS)
METEOROLOGICAL DATA
OVERFLIGHT
Reference signals
SIGNAL PROCESSING
SIMULATION
SOUND TRANSMISSION
SPECTRAL ENERGY DISTRIBUTION
SPECTRUM ANALYSIS
STANDARDIZATION
TAPE RECORDING
TEST AND EVALUATION
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Beschreibung
Zusammenfassung:This report documents the results of an international round robin test on the analysis of helicopter noise. Digital spectral noise data of a 3.5-second simulated helicopter flyover and identical analog test tapes containing helicopter noise data, reference signals, test tones and time code signals were sent to 13 participating organizations. The purpose of the test was to evaluate data reduction systems and procedures; to determine the magnitude of the variability between representative systems and organizations; and to identify potential causes and assist in establishing recommended procedures designed to minimize the variablity. (Author)