Low Frequency Noise and Annoyance in Classroom
نویسندگان
چکیده
منابع مشابه
Low frequency noise and annoyance.
Low frequency noise, the frequency range from about 10 Hz to 200 Hz, has been recognised as a special environmental noise problem, particularly to sensitive people in their homes. Conventional methods of assessing annoyance, typically based on A-weighted equivalent level, are inadequate for low frequency noise and lead to incorrect decisions by regulatory authorities. There have been a large nu...
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In order to study how acoustical factors influence annoyance responses to low frequency noise with tonal components, this research has selected 220 kV and 500 kV transformer noises as examples and an 11point numerical scale as an evaluation tool, in which the percentage of highly annoyed (%HA) and mean annoyance (MA) are chosen to represent annoyance caused by noises. Results show that a logist...
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This paper presents the results of low-frequency noise (LFN) annoyance tests in laboratory conditions on a model workstation conceptual mental work. Group of volunteers: 60 persons (30 women and 30 men) participated in the experiment consisting in completing psychological tests in three different acoustic conditions. The tests results have shown significant differences in subjective assessment ...
متن کاملA study of annoyance caused by low-frequency noise during mental work.
This article presents the results of an analysis of annoyance caused by low-frequency noise (including infrasonic noise) that occurs at work stations located in offices. The tests covered measurements of acoustic parameters specific for this type of noise and a survey conducted in the working environment and in laboratory conditions at a model of a work station.
متن کاملAssessment of annoyance from low frequency and broadband noises.
OBJECTIVES It has been shown that low frequency noise (LFN), defined as broadband noise with dominant content of low frequencies (10-250 Hz), may be annoying to exposed subjects. The aim of the study was to compare the degree of annoyance caused by LFN with that caused by broadband noise (BBN) without dominant low frequency components at similar A-weighted sound pressure levels. MATERIALS AND...
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ژورنال
عنوان ژورنال: Journal of Low Frequency Noise, Vibration and Active Control
سال: 2000
ISSN: 1461-3484,2048-4046
DOI: 10.1260/0263092001493010