Download or read book Cumulative Annoyance Due to Multiple Aircraft Flyover with Differing Peak Noise Levels written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-26 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A laboratory study in which 160 subjects judged the annoyance of 30 minute sessions of aircraft noise is described. Each session contained nine flyovers consisting of various combinations of three takeoff recordings of Boeing 727. The subjects were asked to judge their annoyance in the simulated living room environment of the laboratory and also to assess how annoyed they would be if they heard the noise in their home during the day, evening, and night periods. The standard deviation of the sound level did not improve the predictive ability of L sub eq (equivalent continuous sound level) which performed as well or better than other noise measured. Differences were found between the projected home responses for the day, evening, and nighttime periods. Time of day penalties derived from these results showed reasonable agreement with those currently used in community noise indices. Shepherd, K. P. Unspecified Center NASA-CR-3417 NAS1-14970; RTOP 505-35-13-01
Download or read book Cumulative Annoyance Due to Multiple Aircraft Flyover with Differing Peak Noise Levels written by and published by . This book was released on 1981 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulative Annoyance Due to Multiple Aircraft Flyovers with Differing Peak Noise Levels written by Kevin P. Shepherd and published by . This book was released on 1981 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A laboratory study in which 160 subjects judged the annoyance of 30 minute sessions of aircraft noise is described. Each session contained nine flyovers consisting of various combinations of three takeoff recordings of Boeing 727. The subjects were asked to judge their annoyance in the simulated living room environment of the laboratory and also to assess how annoyed they would be if they heard the noise in their home during the day, evening, and night periods. The standard deviation of the sound level did not improve the predictive ability of L sub eq (equivalent continuous sound level) which performed as well or better than other noise measured. Differences were found between the projected home responses for the day, evening, and nighttime periods. Time of day penalties derived from these results showed reasonable agreement with those currently used in community noise indices.
Download or read book Annoyance Due to Multiple Airplane Noise Exposure written by C. A. Powell and published by . This book was released on 1980 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page 1370 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 Effects of Conversation Interference on Annoyance Due to Aircraft Noise written by Kelli Francisco Key and published by . This book was released on 1980 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiple event Airplane Noise Annoyance written by Clemans A. Powell and published by . This book was released on 1983 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Annoyance due to multiple airplane noise exposure written by Clemans A. Powell and published by . This book was released on 1980 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sonic boom Research written by Harvey H. Hubbard 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 Effects of Activity Interference on Annoyance Due to Aircraft Noise written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-14 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of aircraft flyover noise on annoyance were compared for face to face conversation, reverie, and television viewing. Eighteen 5 minute sessions, each composed of three flyovers, were presented on each of 2 days to subjects in a simulated living room. Twelve pairs of females and 12 pairs of males were tested, once before and once after work. Flyovers varied in peak noise level from 53 to 83 dB, A weighted. On each day, subjects engaged in 18 sessions, six of conversation, six of television viewing, and six of reverie. The subjects completed subjective ratings of annoyance and acceptability following every session. Annoyance and unacceptability rating scores were significantly higher for the activity of television viewing compared to conversation or reverie. There was no difference between judgments during the latter two activities. No differences were found in the judgments when compared on the basis of "fatigue" (before/after work) or sex of the subject. Willshire, K. F. and Powell, C. A. Langley Research Center NASA-TP-1938, L-14808 RTOP 505-35-13-01...
Download or read book Effects of Sound Level Fluctuations on Annoyance Caused by Aircraft flyover Noise written by David A. McCurdy and published by . This book was released on 1979 with total page 44 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 Aircraft and Background Noise Annoyance Effects written by and published by . This book was released on 1984 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annoyance Caused by Propeller Airplane Flyover Noise written by David A. McCurdy and published by . This book was released on 1984 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Descriptions of Flyover Noise Signals Produced by Various Jet Transport Aircraft written by Dwight E. Bishop and published by . This book was released on 1967 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report provides descriptions of maximum levels and time durations for 45 flyover noise signals produced by a variety of turbojet and turbofan transport aircraft in current airline service. The descriptions are based upon one-third octave band noise spectra determined at one-half second intervals throughout the flyover time histories. Comparisons are provided between integrated perceived noise levels, effective perceived noise levels, perceived noise levels calculated from the maximum third-octave band noise levels occurring during the flyover and N-weighted noise levels. Comparison of various duration measurements and corrections are also presented for durations measured at levels of 10 dB and 20 dB down from the maximum flyover levels. Comparisons indicate high correlation among many of the different measures describing maximum noise levels and duration.
Download or read book Expanded East Coast Plan Changes in Aircraft Flight Patterns Over the State of NJ written by and published by . This book was released on 1995 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
