Lab Report Noise Level Range In Lecture
HK01 Civil Engineering Programme
KA 40701 Makmal IV Journal Reports
Group 6 (C1 -E)
Noise Level Range in Lecture Hall
Nancy Chua Yin Yee, Fashius Mark Marail, Fatin Suraya bte Suhaili, AG.Mohd Taufiq B.Ag.Ali, Syazwan Bin Madso, Dayang Haniza Binti Awang Patra
Abstract:
Sound is technically described in term of loudness (amplitude) of the sound and frequency (pitch) of the sound. The standard unit measurement of the loudness of sound is the decibel (dB). Noise can be taken as pollution because it causes disruption which, in return may cause hearing impairment at critical conditions. The locations of experiment that were selected are DKP 7, DKP 8 and DKP 9 in UMS. At an interval of 5 minutes for one hour duration, the sound pressure level (LP) and maximum noise values were recorded. A total 12 readings for one location were obtained. The average maximum sound value for DKP 7, DKP 8, and DKP 9 are 83.7, 79.2, and 81.3 respectively. The results in each location do not differ a lot due to the similar factors contributing to noise level in lecture hall.
Keywords: Noise pollution, Lecture hall, Sound, Decibel (dB), Sound level meter
1. Introduction
Sound is technically described in term of loudness (amplitude) of the sound and frequency (pitch) of the sound. The standard unit measurement of the loudness of sound is the decibel (dB). Everyday sounds normally range from 30 dB (very quite) to 100 dB (very loud). Generally, noise increase of less than 3 dB is not detectable by human ears. Because the human ear is not equally sensitive to sound at all frequencies, community noise levels are measured in term of the “A-weighted decibel,” abbreviated dBA. [Lab Manual]
Davis and Cornwell (2008) defined that noise is unwanted sound. It is an environmental phenomenon to which we are exposed before birth and throughout life. Noise is any sound which is independent of loudness that can produce an undesired physiological effect in an individual, and that may interfere with the
KA 40701 Makmal IV Journal Reports
Group 6 (C1 -E)
Noise Level Range in Lecture Hall
Nancy Chua Yin Yee, Fashius Mark Marail, Fatin Suraya bte Suhaili, AG.Mohd Taufiq B.Ag.Ali, Syazwan Bin Madso, Dayang Haniza Binti Awang Patra
Abstract:
Sound is technically described in term of loudness (amplitude) of the sound and frequency (pitch) of the sound. The standard unit measurement of the loudness of sound is the decibel (dB). Noise can be taken as pollution because it causes disruption which, in return may cause hearing impairment at critical conditions. The locations of experiment that were selected are DKP 7, DKP 8 and DKP 9 in UMS. At an interval of 5 minutes for one hour duration, the sound pressure level (LP) and maximum noise values were recorded. A total 12 readings for one location were obtained. The average maximum sound value for DKP 7, DKP 8, and DKP 9 are 83.7, 79.2, and 81.3 respectively. The results in each location do not differ a lot due to the similar factors contributing to noise level in lecture hall.
Keywords: Noise pollution, Lecture hall, Sound, Decibel (dB), Sound level meter
1. Introduction
Sound is technically described in term of loudness (amplitude) of the sound and frequency (pitch) of the sound. The standard unit measurement of the loudness of sound is the decibel (dB). Everyday sounds normally range from 30 dB (very quite) to 100 dB (very loud). Generally, noise increase of less than 3 dB is not detectable by human ears. Because the human ear is not equally sensitive to sound at all frequencies, community noise levels are measured in term of the “A-weighted decibel,” abbreviated dBA. [Lab Manual]
Davis and Cornwell (2008) defined that noise is unwanted sound. It is an environmental phenomenon to which we are exposed before birth and throughout life. Noise is any sound which is independent of loudness that can produce an undesired physiological effect in an individual, and that may interfere with the
References: Andrew, J. 2012. How loud is too loud? Retrieved 11 December 2013, from http://www.deafnessresearch.org.uk/content/your-hearing/looking-after-your-hearing/how-loud-is-too-loud/ Aziz H.A Goines, L. & Hagler, L. 2007. Noise Pollution: A Modern Plague. South Medical Journal 100(3): 287-294. Ikenberry and Larry, D Noise Pollution Guideline Value. 1995. World Health Organisation (WHO). Slater and Barbara R. 1968. Effects of Noise on Pupil Performance. Journal of Educational Psychology 59:239-243. Smith, K. 2012. Understanding Noise Pollution. Retrieved 11 December 2013, from http://www.conserve-energy-future.com/causes-and-effects-of-noise-pollution.php Spector, K The Planning Guidelines for Environmental Noise Limits and Control. 2007. Department of Environment of Ministry of Natural Resources and Environment Malaysia. Zulkepli, I. And Hazel, K.R. 2000. Noise Pollution at School Environment Located in Residential Area. Journal of Civil Engineering 12:47-62.