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An evaluation of methods for scaling aircraft noise perceptionOne hundred and twenty recorded sounds, including jets, turboprops, piston engined aircraft and helicopters were rated by a panel of subjects in a paired comparison test. The results were analyzed to evaluate a number of noise rating procedures in terms of their ability to accurately estimate both relative and absolute perceived noise levels. It was found that the complex procedures developed by Stevens, Zwicker and Kryter are superior to other scales. The main advantage of these methods over the more convenient weighted sound pressure level scales lies in their ability to cope with signals over a wide range of bandwidth. However, Stevens' loudness level scale and the perceived noise level scale both overestimate the growth of perceived level with intensity because of an apparent deficiency in the band level summation rule. A simple correction is proposed which will enable these scales to properly account for the experimental observations.
Document ID
19720005339
Document Type
Contractor Report (CR)
Authors
Ollerhead, J. B. (Wyle Labs., Inc. Hampton, VA, United States)
Date Acquired
September 2, 2013
Publication Date
October 1, 1971
Subject Category
AIRCRAFT
Report/Patent Number
NASA-CR-1883
Funding Number(s)
CONTRACT_GRANT: NAS1-9257
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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