Study the spatial variability of the noise levels inside two commercial poultry housing with different adiabatic evaporative cooling systems

The objective of the present work was to determinate the map the spatial distribution of noise levels inside two commercial poultry housing having different adiabatic evaporative cooling systems, during the life cycle of birds. The noise level was assessed by a digital sound level meter. The data were measured manually at each point in six predetermined sections, totaling 36 points. Spatial distribution maps of noise were generated for the inside of each animal facility, using geostatistics technique through semivariogram analysis and interpolation by ordinary kriging. It concludes that the birds were, in general, subjected to noise levels above 62.0 dBA and during clean and disinfect (decontamination period) the sheds were at approximately 35.0 dBA. The spatial profile of the noise level to the productive environment provide for the attainment of more detailed information about the studied system.

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Assessment of traffic noise due to transverse rumble strips at residential areas

MATEC Web of Conferences ◽

10.1051/matecconf/201825002006 ◽

2018 ◽

Vol 250 ◽

pp. 02006

Author(s):

Zaiton Haron ◽

Darus Nadirah ◽

Supandi Mohamad Afif ◽

Yahya Khairulzan ◽

Nordiana Mashros ◽

...

Keyword(s):

Noise Level ◽

Traffic Noise ◽

Middle Layer ◽

Sound Level ◽

Skid Resistance ◽

Residential Areas ◽

Noise Levels ◽

Traffic Characteristics ◽

Level Meter ◽

Road Characteristics

Transverse rumble strips (TRS) are commonly being installed to alert the drivers through sound and vibration effects. The sound produced affects the existing traffic noise level which caused noise annoyance to the nearby residents. This study aims to assess the traffic noise due to TRS at residential areas by determining the roadside noise levels, traffic and road characteristics and evaluating the relationship between these parameters. Middle overlapped (MO), middle layer overlapped (MLO) and raised rumbler (RR) TRS profiles with same thickness were selected. The measurements of roadside noise levels and skid resistance were conducted using sound level meter (SLM) and British pendulum tester (BPT) respectively. Traffic characteristics were evaluated using previous data measured using automatic traffic counter (ATC). In overall, MLO produced highest roadside noise levels with increase of 20.5dBA from baseline. Generally, the increase of roadside noise level due to TRS is strong with speed, weak to medium with skid resistance of TRS and no relationship with traffic volume. Based on three TRS profile types, MLO is not suitable to be installed on the roadways adjacent to the residential areas as the increase of roadside noise level is significant which is more than 5dBA compared to MO and RR.

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Effect of distance from road intersection on developed traffic noise levels

Canadian Journal of Civil Engineering ◽

10.1139/l04-016 ◽

2004 ◽

Vol 31 (4) ◽

pp. 533-538 ◽

Cited By ~ 8

Author(s):

Saad Abo-Qudais ◽

Arwa Alhiary

Keyword(s):

Noise Level ◽

Traffic Noise ◽

Sound Level ◽

Signalized Intersections ◽

Environment Pollution ◽

Noise Levels ◽

The Road ◽

Traffic Intersection ◽

Noise Measurements ◽

Level Meter

The main objective of this study was to evaluate the variation in traffic equivalent noise levels as distance from the road intersection increases. To achieve this objective, traffic volume and equivalent noise level were monitored at 40 signalized intersections in Amman, the capital of Jordan. An integrated sound level meter (ISLM) was used to measure 1 min equivalent noise level along all approaches of the evaluated intersections. A total of 3326 noise measurements were performed. The collected data were analyzed to evaluate the variation of noise levels as distance from the intersection increases. The results indicated that equivalent noise levels were significantly affected by distance from the signal stop line. The equivalent noise levels at distances 50 and 100 m from the intersection were found to be 1.5 to 2.0 dB less than those at 0 m. While at 200, 250, and 300 m from the intersection, the monitored equivalent noise levels were found to be 3.8 to 4 dB higher than that at 0 m. At distances farther than 250 m, the measured equivalent noise levels tend to keep constant value of equivalent noise level as distance increased.Key words: noise, traffic, intersection, environment, pollution.

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Traffic Intersections Noise Levels and Daily Noise Exposure in Chandrapur City, Central India

Indonesian Journal of Environmental Management and Sustainability ◽

10.26554/ijems.2019.3.3.80-92 ◽

2019 ◽

Vol 3 (3) ◽

pp. 80-92

Author(s):

Rahul K. Kamble

Keyword(s):

Noise Level ◽

Noise Exposure ◽

Health And Safety ◽

Central India ◽

Sound Level ◽

Control Measures ◽

Noise Levels ◽

Road Design ◽

Traffic Intersections ◽

Level Meter

Noise level monitoring was carried out at nine important traffic intersections of the Chandrapur city to ascertain noise levels and daily noise exposure. A pre-calibrated mini sound level meter was used for noise measurement. Observations were recorded for 24 hours and noise level during the day, night and for 24-hours was computed. Maximum noise level during daytime was 84.27 dB(A) at Bangali camp square; whereas, minimum 79.23 dB(A) at Priyadarshani square. In case of nighttime maximum 85.90 dB(A) was at Warora naka square and minimum 70.06 dB(A) at the Jatpura gate. Minimum noise level during 24-hours was at Bagla square 84.34 dB(A) and maximum 91.14 dB(A) at Warora naka square. Noise level during day and night were above the Indian noise standard for the commercial area. The Bangali camp square was identified as the most ear-splitting square during daytime and Warora naka square at nighttime and for 24-hours also. Peak noise was recorded from 10.00 am to 11.00 am and 3.00 pm to 7.00 pm. Vehicular noise, horns, and improper road design contributed significantly to noise levels at traffic intersections. Daily noise exposure analysis by Health and Safety Executive, UK software revealed Bangali camp square and Ramnagar police station square’s daily noise exposure for 0.25 hour was maximum 70 LEP,d and minimum at Gandhi square and Bagla square 65 LEP,d. Noise levels indicated no immediate effect for hearing loss. Control measures for reduction of noise levels at traffic intersections have also been proposed.

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Noise Level Status in Siddharthanagar Municipality, Rupandehi, Nepal

Himalayan Physics ◽

10.3126/hj.v5i0.12873 ◽

2015 ◽

Vol 5 ◽

pp. 69-74

Author(s):

Lakshmi Nath Bhattarai

Keyword(s):

Noise Level ◽

Sound Level ◽

Sound Level Meter ◽

Noise Levels ◽

Medical College ◽

Commercial Area ◽

Human Hearing ◽

Level Meter ◽

High Level ◽

Digital Sound

Undesirable sound for human hearing is called as noise. It was measured at the selected locations of silent, residential and commercial zones of Siddharthanagar Municipality by using Dick Smith Digital Sound Level Meter Q 1362 for ‘A’ weighting in day time at 9:00 AM to 6:00 PM in the month of November and December 2012. The result shows that at each location the Leq noise levels are above than the noise level standard prescribed by Government of Nepal and WHO. Maximum Leq of 81.9 dB(A) was observed at the Bus park of commercial area and minimum 54.5 dB(A) was observed at Medical College area of silent zone. In other places, the Leq lie in the range 56.2 dB(A) to 81.9 dB(A). The study showed that the places lying along highways have high level of noise which is due to bad condition of roads, vehicles and unnecessary use of horns The Himalayan Physics Vol. 5, No. 5, Nov. 2014 Page: 69-74

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ANALISIS KEBISINGAN PADA INSTITUSI PENDIDIKAN DI FRONTAGE ROAD SISI TIMUR JALAN A.YANI SURABAYA

Al-Ard Jurnal Teknik Lingkungan ◽

10.29080/alard.v3i2.331 ◽

2018 ◽

Vol 3 (2) ◽

pp. 70-77

Author(s):

Widya Nilandita ◽

Dyah Ratri Nurmaningsih ◽

Shinfi Wazna Auvaria

Keyword(s):

Noise Level ◽

Teaching And Learning ◽

Negative Impact ◽

Educational Institution ◽

Quality Standard ◽

Sound Level ◽

Educational Institutions ◽

Sound Level Meter ◽

Noise Levels ◽

Level Meter

Noise can occur anywhere, including at educational institutions. Noise research at educational institutions began to be studied a lot because of the negative impact on the teaching and learning process and disrupt the performance of teachers and students. Some studies show that schools or universities located on the edge of the road, show noise levels that exceed quality standards. This research was conducted at educational institutions located along the east Frontage Road Jl A.Yani Road, Surabaya, by measuring noise levels at 3 locations, in daylighting measurements with 4 measurement times (L1-L4). Data collection and processing was carried out by referring to the quality standard of KEPMENLH No. 48 of 1996. Data was measured using a sound level meter for 10 minutes for each measurement, with a reading every 5 seconds to obtain 120 data. Data processing results are compared with the standard noise level. The noise value at SD Margorejo I / 403 is 82.2 dB, UIN Sunan Ampel Surabaya is 79.76 dB, and SMK 3 Surabaya is 80.06 dB. The noise level value has exceeded the established quality standard, which has maximum of 55 dB for the educational intitutions area. The source of noise comes from the activities of motorized vehicles in and around educational institution that is quite crowded. Another cause of the high noise value is the train activities along the east frontage road Jl A.yani Surabaya, as well as the distance of the noise source with research location that relatively close. Keywords: noise, educational institution, sound level meter

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A Study on Environmental Sound of Tourist Attraction by Sound Level Meter: Busan Ocean Festival in Korea

Audiology and Speech Research ◽

10.21848/asr.190104 ◽

2020 ◽

Vol 16 (1) ◽

pp. 77-83

Author(s):

Limsoo Shin

Keyword(s):

Noise Level ◽

Sound Level ◽

Main Stage ◽

Tourist Attraction ◽

Noise Levels ◽

Environmental Sound ◽

Sound Sources ◽

Tourist Attractions ◽

Before And After ◽

Level Meter

The environmental sound from festival tourist attractions at Haeundae and Gwangalli in Korea was measured and ascertained exposured environments to constant noise by comparing with precedent researches, the law of execution and demonstration, and conditions of festival sites. Noise sound from array speakers for the main stage at Ocean festival in Busan determined not only differences in accordance with distance such as 0, 1, 5, 10, 15, and 20 meters from the speakers but also station coordinate and altitude were used by an application program. As a result, measured noise before and after sunset showed meaningful difference (p < 0.05) and a station 20 meters away reported as the loudest level in Haeundae case. Noise level difference by distance from sound sources before sunset was significantly existed (p < 0.05). Otherwise, it significantly recorded different noise levels between before and after sunset in Gwangalli tourist attraction (p < 0.05). The noise level of farther station (20 m) was the lowest before sunset and noise level by distance statistically was significant (p < 0.05). In conclusion, Gwangalli tourist attraction generally had bigger noise sound than Haeundae’s. Flying array speakers could make the sound measurement different by studying advanced research and temperature would also influence on the noise level between day and night times.

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The assessment of the sawmill noise

Journal of Agricultural Engineering ◽

10.4081/jae.2013.397 ◽

2013 ◽

Vol 44 (2s) ◽

Author(s):

P. D’Antonio ◽

C. D’Antonio ◽

C. Evangelista ◽

V. Doddato

Keyword(s):

Data Processing ◽

Sound Pressure Level ◽

Noise Level ◽

Sound Pressure ◽

Sound Level ◽

Pressure Level ◽

Published Data ◽

Noise Levels ◽

Different Types ◽

Level Meter

Noise is a serious and widespread problem in many workplaces like in sawmill. The published data for the year 2010 about the total number of pathologies from work in Italia due to the noise, showed 5222 cases divided by sex, in fact for females there are instances in number of 221 while the male has a number of cases is equal to 4961. The aim of this work was to detect the sound level caused by the use of the machineries in a sawmill. The measurements were carried out through an instrument known as noise level meter, equipped with a microphone and connected to a computer for data processing and analysis of variance to a factor in excel, and able to assess noise levels at any particular point in the mill. The machines were subjected in relief and with several different types of wood materials. Obviously, in our case a fundamental role takes the moisture of wood. The drying operation is intended to obtain that degree of humidity of the wood, generally it must be between 7 and 16%, compatible with the type of glue used and, above all, appropriate to the target structures. The machines that have the highest sound pressure levels were trimmer and profiler, with values ranging between 85 dB(A) and 110 dB(A). Finally, it’s possible conclude that the sound pressure level increases when the aspiration equipment is turned on, the noise of machinery decreases during the processing of wood and that, increasing the thickness, decreased the noise emitted by the machine.

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Assessment of Noise Pollution in Different Hatbazars of Butwal City, Rupandehi, Nepal

Himalayan Physics ◽

10.3126/hj.v6i0.18362 ◽

2017 ◽

pp. 61-64

Author(s):

Kamal Bahadur Rayamajhi

Keyword(s):

Noise Level ◽

Noise Pollution ◽

Sound Level ◽

Sound Level Meter ◽

Specific Time ◽

Noise Levels ◽

Metropolitan City ◽

Commercial Activities ◽

Level Meter ◽

Digital Sound

The study was carried out to ascertain the level of noise pollution at five different hatbazars (periodic markets) of Butwal Sub-Metropolitan city by using Dick Smith Digital Sound Level Meter Q 1362 in the specific time from 4:00 PM to 5:00PM in the month of June 2016 on a hatbazar day and a usual day. The result shows that the heighest Leq of 79.8 dB(A) was observed on hatbazar day at Butwal hatbazar. However, on non hatbazar day the highest Leq of 71.9 dB(A) was observed at Purano bus park hatbazar. The lowest Leq of 64.9 dB(A) and 54.6 dB(A) were respectively observed on hatbazar day and non hatbazar day at Majhagaun hatbazar. The study shows that the noise level was found to be higher on hatbazar day as compared to non hatbazar day in all sampling sites. The commercial activities, crowd of people, unnecessary advertisement of goods, blasting of horns increase noise levels in hatbazars.The Himalayan Physics Vol. 6 & 7, April 2017 (61-64)

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S254 – Bone Conduction Noise Exposure via Ventilators in the NICU

Otolaryngology ◽

10.1016/j.otohns.2008.05.430 ◽

2008 ◽

Vol 139 (2_suppl) ◽

pp. P160-P160

Author(s):

Angela P Black ◽

James D Sidman

Keyword(s):

Ambient Noise ◽

Noise Exposure ◽

Bone Conduction ◽

Sound Level ◽

Noise Levels ◽

High Noise ◽

Endotracheal Tubes ◽

Level Meter ◽

Hearing Damage ◽

Air Conduction

Objectives To demonstrate that neonatal ventilators produce high noise levels through bone conduction (BC) via endotracheal tubes, as well as air conduction (AC) from ambient noise. Methods A sound level meter was used to measure the noise levels 4 feet from the ventilator and in direct contact at the end of a balloon attached to the ETT to simulate the noise presented to the infant. 3 commonly used neonatal ventilators (Sensormedics 3100A, VIP Bird and Bunnell Jet) were examined. Results Noise levels were significantly higher (6 – 14 dB) at the end of the ETT than 4 ft from the ventilator for all ventilators studied. Conclusions Previous studies have shown high ambient noise levels in NICUs, but have failed to address the actual noise presented to the infant. ETT transmission of noise as a direct bone stimulus through the skull has been overlooked. This study has shown that high noise intensities are being presented not only as AC, but as BC to the infants though the ETT. This study demonstrates, therefore, that ear protection alone will not save these at-risk infants from hearing damage. More must be done to decrease noise exposure and develop quieter machines.

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ANALISIS TINGKAT KEBISINGAN LINGKUNGAN DI KELURAHAN PAHANDUT KECAMATAN PAHANDUT KOTA PALANGKA RAYA KALIMANTAN TENGAH

Jukung (Jurnal Teknik Lingkungan) ◽

10.20527/jukung.v5i2.7314 ◽

2019 ◽

Vol 5 (2) ◽

Author(s):

Muh Azhari ◽

Rudy Yoga Lesmana

Keyword(s):

Noise Level ◽

Qualitative Method ◽

Air Transportation ◽

Sound Level ◽

Sound Level Meter ◽

Google Maps ◽

Average Value ◽

The Third ◽

Level Ii ◽

Level Meter

Permasalahan lingkungan dari usaha kegiatan manusia untuk memenuhi kebutuhan hidup, seperti sandang, pangan, papan dan transportasi harus dilakukan penanganan dengan baik. Misalnya seperti pengaruh kegiatan transportasi udara terhadap kondisi kualitas lingkungan setempat seperti kegiatan di Bandara Cilik Riwut Kelurahan Pahandut, Kecamatan Pahandut, Kota Palangka Raya Kalimantan Tengah. Metode penelitian yang digunakan merupakan metode kualitatif dengan analisis data instrumen seperti Sound Level Meter Instrument, Anemometer, GPS, Flight Radar, Google Maps Application & WECPNL Instrument (Weighted Equivalent Continuous Perceived Noise Level) dan pengambilan data dilakukan selama tiga hari sesuai dengan kedatangan dan keberangkatan pesawat. Hasil penelitian dengan analisis WECPNL menunjukkan bahwa tingkat kebisingan di hari ke 2 lebih besar dibandingkan hari ke 3 dan hari ke 3 lebih besar dari hari ke 1 (87,2 > 82,2 > 75,9) dengan nilai rata-rata WECPNL sebesar 81,7. Kebisingan di bandara Cilik Riwut di Kota Palangka Raya Kalimantan Tengah termasuk kebisingan regional tingkat II dan III. Kegiatan yang dapat dilakukan untuk meminimalisir Risiko kebisingan tersebut yaitu dengan melakukan kegiatan rekayasa keteknikan dan menanam vegetasi yang berfungsi mengurangi kebisingan Kata kunci: Bandara, Kebisingan, Lingkungan. The environmental problems of the efforts of human activities to meet the needs of life, such as clothing, food, housing and transportation must be handled properly. For example, such as the influence of air transportation activities on local environmental quality conditions such as activities at Cilik Riwut Airport, Pahandut Village, Pahandut District, Palangka Raya City, Central of Kalimantan. The research method used is a qualitative method with data analysis instruments such as Sound Level Meter Instrument, Anemometer, GPS, Flight Radar, Google Maps Application and WECPNL Instrument (Weighted Equivalent Continuous Percepived Noise) and data collection is carried out for three days in accordance with the arrival and departure of the aircraft. Results of research with WECPNL analysis show that the noise level on the second day is greater than the third day and the third day is greater than the first day (87,2 > 82,2 > 75,9) with score average value is 81,7. Noise at Cilik Riwut airport in Palangka Raya City, Central Kalimantan including regional level II and III noise. activities that can be carried out are carrying out engineering activities and planting vegetation which have the function of reducing noise. Keyword: Airport, Environmental, Noice.

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