Download or read book The subjective evaluation of noise from light aircraft written by Kevin P. Shepherd and published by . This book was released on 1976 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Subjective Evaluation of General Aviation Aircraft Noise written by Wyle Laboratories and published by . This book was released on 1968 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Subjective Evaluation of Synthesized STOL Airplane Noises written by Clemans A. Powell and published by . This book was released on 1973 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Subjective Evaluation of General Aviation Aircraft Noise written by J. B. Ollerhead and published by . This book was released on 1968 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment was conducted, in a progressive wave field, in which a group of subjects evaluated the noisiness of recorded general aviation aircraft sounds in comparison to jet transport flyover noise. The aircraft studied were piston engined, turboprop and turbojet aircraft in the weight range 2000 to 13,000 lbs. Twenty-eight noise rating scales were evaluated and it was found that of currently used scales, Perceived Noise Level, corrected for pure tone content, gave the best correlation with the subjective results. For the signals studied, duration appeared to have little influence on the subjective noisiness of flyover sounds. By comparing the results for a number of simulated flyover sounds it was concluded that an explanation lies in the influence of the Doppler frequency shift, which tends to cancel the effects of duration. A Doppler correction for current noise rating methods is presented which generally improves their correlation with observed results. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book NASA Technical Paper written by and published by . This book was released on 1978 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Paper written by United States. National Aeronautics and Space Administration and published by . This book was released on 1979 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Federal Information Processing Standards Publication written by and published by . This book was released on with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aircraft Noise Evaluation written by United States. Federal Aviation Administration and published by . This book was released on 1968 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Federal Aviation Administration, in response to Public Law 90- 411, has begun the rule making process leading to the certification of aircraft for noise. The basic element in the regulation criteria is the noise evaluation measure designated as effective perceived noise level, EPNL, which is a single number evaluator of the subjective effects of aircraft noise on human beings. Simply stated, EPNL consists of instantaneous perceived noise level corrected for tones and duration. The history of the development of EPNL is presented and a critical evaluation of its validity is made. The computational procedures are described in detail including both integration and approximate methods for calculating duration corrections. Examples are given in the appendices.

Download or read book Review of Subjective Measures of Human Response to Aircraft Noise written by Jimmy M. Cawthorn and published by . This book was released on 1976 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aircraft Noise written by Oleksandr Zaporozhets and published by CRC Press. This book was released on 2011-05-13 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aircraft noise has adverse impacts on passengers, airport staff and people living near airports, it thus limits the capacity of regional and international airports throughout the world. Reducing perceived noise of aircraft involves reduction of noise at source, along the propagation path and at the receiver. Effective noise control demands highly skilled and knowledgeable engineers. This book is for them. It shows you how accurate and reliable information about aircraft noise levels can be gained by calculations using appropriate generation and propagation models, or by measurements with effective monitoring systems. It also explains how to allow for atmospheric conditions, natural and artificial topography as well as detailing necessary measurement techniques.

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1986 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Federal Register written by and published by . This book was released on 1975-01-02 with total page 1790 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1978 with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1978 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Duration and Other Noise Characteristics on the Annoyance Caused by Aircraft flyover Noise written by David A. McCurdy and published by . This book was released on 1979 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA SP written by and published by . This book was released on 1988 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: