ENVIRONMENTAL NOISE SURVEY STUDY
(EXPERIMENT 3)
COURSE NAME:
COURSE CODE:
DEPARTMENT:
INSTRUMENTATION PRACTICAL II
SCT 222
SCIENCE LABORATORY
TECHNOLOGY
2C2
5
10TH JULY, 2023
CLASS:
GROUP:
DATE OF SUBMISSION:
NAME
INDEX NUMBER
SAMUEL ASIGBEE
MARVIN YARTEY-BOI ANNAAN
GIFTY MINGLE
FAUZIA AWUDU
PRISCILLA ANKRAH
01211921D
01213353D
01210669D
01212591D
01215752D
1
ABSTRACT
This lab report summarizes the results of a noise from the environment survey investigation
done with a sound level meter. The purpose of this study was to analyse noise levels in three
different areas and identify probable causes of noise pollution. The sound level meter was used
to measure noise levels at various times of the day and in various locations. The survey findings
were examined in order to identify regions with high noise levels and to compare them to the
standard noise levels.
INTRODUCTION
Environmental noise pollution has become a major problem due to its negative consequences
on human health and well-being. This lab report attempts to analyse noise levels in various
places and give insights into probable sources of noise pollution. Measurements were
collected at several sites with a sound level meter to investigate the changes in noise levels.
The sound level meter used in this environmental noise survey is a portable electronic device
specifically designed for measuring sound pressure levels. It consists of a microphone to
capture sound, an analogue-to-digital converter to convert the analogue sound signals into
digital data, and a display to show the measured sound levels in decibels (dB).
The survey results will help to design noise management measures and promote a calmer and
healthier atmosphere.
AIM
The aim of the study is to understand the variations in noise levels across different locations,
identify areas with excessive noise levels, and to compare the results to a given standard
OBJECTIVES
To measure and assess the levels of environmental noise in different locations. This includes
identifying areas with high noise levels and determining the sources of noise contributing to
the overall noise pollution.
To identify the specific sources of noise in the environment. This can include (such as road
traffic, market, and education facilities) noise.
MATERIALS
Sound Level Meter (in A-rated reading)
2
PROCEDURE
The noise meter was set-up to measure environmental sound equivalent level (L90)
L90 was measured at 15 selected sites with same noise sources
The measurement procedure was repeated at three different sites with noise sources
RESULT
ENVIRONMENTAL NOISE (MARKET)
90
86,2
85,75
83,7
AVERAGE L90 (dB)
85
80,85
80
77,1
81,45
81,05
80,85
79,7
78,35
77,3 77,8
74,95
74,45
75
73,05
70
65
1:00 1:01 1:02 1:03 1:04 1:05 1:06 1:07 1:08 1:09 1:10 1:11 1:12 1:13 1:14
Time (mins)
ENVIRONMENTAL NOISE (STREETS)
90
87,5
85
Average L90 (dB)
85
80
78,4 78,95
82,2
82
81,88
79,45
79,45
79,3
76,9
76,8
75,1 75,1
75
73,2
70
65
12:39 12:40 12:41 12:42 12:43 12:44 12:45 12:46 12:47 12:48 12:49 12:50 12:51 12:52 12:53
Time (mins)
3
ENVIRONMENTAL NOISE (EDUCATIONAL FACILTY)
90
80
Average L90 (dB)
70
73,4
68,3
72,45 70,85
65,8
71,3
68,4
65,85
63,3
63,35
1:25
1:26
76,2
78,3
73,15
72,25
56,25
60
50
40
30
20
10
0
1:17
1:18
1:19
1:20
1:21
1:22
1:23
1:24
1:27
1:28
1:29
1:30
Time (mins)
COMPARING THE OVERALL AVERAGE OF NOISE OF THE THREE AREAS
COMPARISON OF NOISE LEVELS IN THE THREE AREAS
82
80
78
AVERAGE L90 (dB)
76
74
72
70
68
66
64
MARKET
STREETS
Area
4
EDUCATIONAL FACILITY
1:31
DISCUSSION
The findings of this study highlight the presence of noise pollution in various locations, with
hawkers and major roadways being the primary sources of high noise levels. Comparing the
results to the lab manual it can be said that the averages of our findings are within the range for
a market, streets (roadways) and educational facilities. As seen from the graph the educational
facility has a low level of noise compared to the market and the streets. This could be that the
noise source from the market and the streets are absent in the educational facility. Comparing
the educational facility to the lab manual our findings is higher this is due to a construction site
on the facility.
The excessive noise can negatively impact human health, causing stress, sleep disturbances,
and reduced quality of life. The identification of specific noise sources allows for targeted noise
control measures such as stricter regulations for noise-emitting activities. These measures can
help mitigate the noise levels and create a more peaceful living environment for residents.
CONCLUSION
The environmental noise survey study conducted using a sound level meter provided valuable
insights into the noise levels in different areas. The results emphasized the presence of noise
pollution, particularly on the street and in the market place. The identification of specific noise
sources enables the implementation of appropriate noise control strategies to mitigate the
adverse effects on human health and well-being. By addressing noise pollution, we can create
a more serene and liveable environment for the community.
REFERENCE
World Health Organization. (2011). Guidance on environmental noise. Retrieved from
https://www.who.int/tools/compendium-on-health-and-environment/environmental-noise
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