NASA Technical Reports Server (NTRS) : Subjective pdf

NASA Technical Reports Server (NTRS) : Subjective_bookcover

NASA Technical Reports Server (NTRS) : Subjective

More Book Details

Description of the Book:

Subjects, located outdoors and indoors, judged the noisiness and other subjective noise characteristics of flyovers of two helicopters and a propeller driven airplane as part of a study of the effects of impulsiveness on the subjective response to helicopter noise. In the first experiment, the impulsive characteristics of one helicopter was controlled by varying the main rotor speed while maintaining a constant airspeed in level flight. The second experiment which utilized only the helicopters, included descent and level flight operations. The more impulsive helicopter was consistently judged less noisy than the less impulsive helicopter at equal effective perceived noise levels (EPNL). The ability of EPNL to predict noisiness was not improved by the addition of either of two proposed impulse corrections. A subjective measure of impulsiveness, however, which was not significantly related to the proposed impulse corrections, was found to improve the predictive ability of EPNL

  • Creator/s: NASA Technical Reports Server (NTRS
  • Date: 4/1/1981
  • Year: 1981
  • Book Topics/Themes: NASA Technical Reports Server (NTRS), AIRCRAFT NOISE, EFFECTIVE PERCEIVED NOISE LEVELS, HELICOPTERS, NOISE PREDICTION (AIRCRAFT), PSYCHOACOUSTICS, DATA ACQUISITION, IMPULSES, REGRESSION ANALYSIS, ROTARY WINGS, ROTOR SPEED, TABLES (DATA), Powell, C. A

An excerpt captured from the PDF book

NASA Technical Reports Server (NTRS) : Subjective_book-excerpt

Report Broken Link

File Copyright Claim

Comments

Leave a Reply

Your email address will not be published. Required fields are marked *

Categories

You might be also interested in these Books

Related Posts
PDF Viewer

الرجاء الانتظار بينما يتم تحميل الـ PDF…
HTML Popup Example