scholarly journals Analisis Reverberation Time Terhadap Kenyamanan Audial pada Ruang Auditorium Menara Pinisi UNM

2019 ◽  
Vol 22 (1) ◽  
pp. 49-56
Author(s):  
Zainatun Zainatun
Keyword(s):  
Qualitative Method ◽  
Quantitative Methods ◽  
Sound Pressure ◽  
Sound Level ◽  
Reverberation Time ◽  
Measuring Point ◽  
Qualitative And Quantitative Methods ◽  
Acoustic Comfort ◽  
Level Meter ◽  
Level Of Sound Pressure

Auditorium space is one of the building functions that must be supported will be acoustic comfort. This research aimed (1) to determine the condition of auditory comfort in the auditorium space according to the opinion of the space users; (2) to investigate the value of the existing reverberation time in the space. The research used two methods, namely the qualitative and quantitative methods; the qualitative method was conducted by distributing questionnaires, interviews and direct observation in the field. The results of the questionnaires were analyzed using SPSS version 22, while the quantitative method was conducted by measuring the sound pressure level using the Sound Level Meter (SLM) and calculation of the Reverbertion Time (RT) by using the Sabine Equation and the simulation was conducted using the Ecotect Software. The research results indicated that, based on the questionnaires distribution to the space user, and according to the seat position, 44.3% of the older users felt comfortable about the spread of sound in the space, while 41.3% did not feel comfortable with the position of the seats and the sound they received, and only 2.0% felt very comfortable with the distribution spread of sound in the space. Meanwhile,  the results of the measurement of the highest Level of Sound Pressure showed that at the measuring point of 31 was 94.0 dB and the lowest at point of 22 was 60.8 dB. The results of the  RT calculation at the auditorium when the auditorium was empty was about 0.45-0.40 seconds at the frequency of 500hz.

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

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.

scholarly journals Evaluating of Noise Pollution in the Airside of Imam Khomeini International Airport

2017 ◽  
Vol 11 (6) ◽  
pp. 47
Author(s):  
Shabani Sh. ◽  
Zarei Sh.
Keyword(s):  
Sound Pressure ◽  
Noise Pollution ◽  
Sound Level ◽  
Environmental Standards ◽  
Analysis Method ◽  
Measurement Evaluation ◽  
International Airport ◽  
Level Measurement ◽  
Management Principle ◽  
Level Meter

Detection, measurement and monitoring of environmental pollution are considered as one of the decision basics in the environmental management. Principle planning for solving environmental problems is not possible without reliance to assured measurement with the help of new and powerful systems in monitoring. In this regard the noise pollution of airports is of great importance. In this paper by using device analysis method and utilizing a calibrated sound level meter device, sources of noise pollution recognition, noise and sound pressure level measurement, evaluation and comparison of them with environmental standards, and airside control actions of the Imam Khomeini international airport have been performed and it was showed, that the runway, ground safety and the dock have been respectively the main pollutants, so that noise pollution in the Apron area and runway at night have been 80.7% more than Iran standards and the ground safety site while alarm broadcasting has been 53.1% at daytime and 61.1% at night more than standards and these values for Dock has been 20.88% and also the value of noise pollutants in water refinery sites, watchtower, taxi parking and pilgrim terminals have met standards. Finally some solutions against noise pollution have been proposed.

scholarly journals Community Participation In Tourism Management In Busai Village Homestay, Wangnamkheo District, Nakhon Ratchasima Province, Thailand

2010 ◽  
Vol 9 (1) ◽  
Author(s):  
Aree Naipinit ◽  
Thirachaya Maneenetr
Keyword(s):  
Natural Resources ◽  
Community Participation ◽  
Qualitative Method ◽  
Quantitative Methods ◽  
Local People ◽  
Tourist Attractions ◽  
Administrative Organization ◽  
Qualitative And Quantitative Methods ◽  
Tourism Management ◽  
Medium Level

The objective of this research was 1) to study community participation in tourism management at Busai Village Home Stay, Wangnamkheo District, Nakhon Ratchasim Province, and 2) to study the effect of the attitudes upon local tourism, particularly in Busai Village Homestay, Wangnamkheo District, Nakhon Ratchasima Province. This research used both qualitative and quantitative methods, and the population studied was 155 family leaders of households in Busai Village Homestay. In addition, we used content analysis in the qualitative method, and in the quantitative method, we analyzed 155 questionnaires utilizing percentage, arithmetic mean, and standard deviation with the SPSS/PC program. The findings were as follows: Community participation was high with regard to developing ideas for tourism management, in planning locations for tourist attractions and use of natural resources, in budgeting for supporting and developing tourist attractions, and  in viewing tourist attractions as financially beneficial for the community. Villagers’ participation in keeping attractions clean and safe, in beautifying the attractions, and in receiving information on tourism were also high. The community’s overall attitude toward tourism was at a medium level. A widely held opinion was that Tambon Administrative Organization (TAO) should accept the people’s ideas in order to develop a tourism management system because TAO has not cooperated with the local people in tourism management as it should have. Apart from this, the local people believe that all people are the owners of natural resources serving as tourist attractions and that all should be responsible for taking care of them.. The local people should not protest tourism management, and neither should they consider it as the responsibility of TAO only.

scholarly journals STUDI ETNOBOTANI TUMBUHAN BERKHASIAT OBAT YANG DIMANFAATKAN MASYARAKAT SUKU MELAYU KABUPATEN LINGGA PROVINSI KEPULAUAN RIAU

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Ufara Qasrin ◽  
Agus Setiawan ◽  
Yulianty Yulianty ◽  
Afif Bintoro
Keyword(s):  
Medicinal Plants ◽  
Qualitative Method ◽  
Quantitative Methods ◽  
Sampling Method ◽  
Ordinary People ◽  
Snowball Sampling ◽  
Qualitative And Quantitative ◽  
Qualitative And Quantitative Methods ◽  
Plant Parts ◽  
Descriptive Research

Medicinal plants have long been used by traditional communities, one of them is the Malay people in Lingga Regency, Riau Islands Province in healing various diseases. This study aims to determine the types of medicinal plants based on local knowledge of the indigenous Malay people. The population of this research is the native Malay people of Lingga Regency and the sampling is done using the snowball sampling method so that the selected respondents are following the required data. This type of research is descriptive research with qualitative and quantitative methods. The qualitative method was used to find out the use of medicinal plants used by the community by interview while the quantitative method was used to find out the percent of the use of medicinal plants by the Malays from the interviews. Based on the results of the study there were 102 types of medicinal plants in 53 families. The most commonly used plant parts are leaves (45.10%) by boiling and the least used are seeds and bark (1.96%). The most used habitats were herbs (27.45%) and trees (26.47%) and the least used were liana (8.82%) and terna (3.92%). Diseases that are usually treated by people with plants are diseases that are commonly suffered by ordinary people such as fever, diarrhea, coughing, toothaches, itching and mouth sores.

scholarly journals THICKNESS INFLUENCE ON ABSORBING PROPERTIES OF STRATIFIED COMPOSITE MATERIALS

2015 ◽  
Vol 21 (4) ◽  
pp. 28-34
Author(s):  
IULIANA IAȘNICU (STAMATE) ◽  
OVIDIU VASILE ◽  
RADU IATAN
Keyword(s):  
Composite Material ◽  
Sound Pressure ◽  
Layered Composite ◽  
Sound Level ◽  
Pressure Level ◽  
Sound Level Meter ◽  
Absorbing Materials ◽  
Absorbing Material ◽  
Study Case ◽  
Level Meter

Plates known as sound absorbing materials: textiles recovered fabrics plus polyethylene are made layered composite material intended to be used to encapsulate industrial engines, as sources of noise in the production departments. Influence of thickness sound-absorbing material can be supported by the values obtained for the absorption coefficient, but it can be studied as a study case in the anechoic chamber, where the sound pressure level is measured with a sound level meter. Cases captured: a free engine; the engine placed in a metallic cube and motor inserted; metal cube that was doubled separately with one material and then with the composite material proposed. For each situation are eight determinations on the perimeter of a circle with a radius of one meter from the source of the noise. Plot a graph of experimental results that support the idea: greater thickness of the layer of material will cause a better absorption of noise.

scholarly journals Influence of Contextual Factors on Soundscape in Urban Open Spaces

2018 ◽  
Vol 8 (12) ◽  
pp. 2524 ◽  
Author(s):  
Xiaolong Zhao ◽  
Shilun Zhang ◽  
Qi Meng ◽  
Jian Kang
Keyword(s):  
Sound Pressure ◽  
Contextual Factors ◽  
Open Spaces ◽  
Acoustic Environment ◽  
Crowd Density ◽  
Significant Difference ◽  
Parabolic Shape ◽  
Acoustic Comfort ◽  
Level Of Sound Pressure ◽  
Central Avenue

The acoustic environment in urban open spaces has played a key role for users. This study analyzed the different effects of contextual factors, including shop openness, season, and commercial function, on the soundscape in two typical commercial pedestrian streets. The following observations were based on a series of measurements, including crowd measurements, acoustic environment measurements, and a questionnaire survey. First, the number of talkers in Central Avenue was greater than the number of talkers in Kuan Alley in cases with the same crowd density, while there was no significant difference in the sound pressure level. When the crowd density increased, acoustic comfort trended downward in Kuan Alley, while the value of acoustic comfort in Central Avenue took a parabolic shape. Second, there was no significant difference between the number of talkers in summer and the number of talkers in winter; however, when crowd density increased by 0.1 persons/m2, the level of sound pressure increased by 1.3 dBA in winter and 2.2 dBA in summer. Acoustic comfort took a parabolic shape that first increased and then decreased in both winter and summer. Regarding commercial function, as the crowd density increased, the number of talkers and the level of sound pressure both increased, while acoustic comfort decreased in three zones with different commercial functions. In addition, a cross-tab analysis was used to discuss the relationship between the number of talkers and the level of sound pressure, and it was found to be positive.

scholarly journals Investigation of the Acoustical Environment in A Shopping Mall and Its Correlation to the Acoustic Comfort of the Workers

2020 ◽  
Vol 10 (3) ◽  
pp. 1170 ◽  
Author(s):  
Nasim Alnuman ◽  
Mhd Ziad Altaweel
Keyword(s):  
Speech Intelligibility ◽  
Sound Pressure ◽  
Early Morning ◽  
Shopping Mall ◽  
Reverberation Time ◽  
Shopping Malls ◽  
Sound Levels ◽  
Shopping Area ◽  
Acoustic Comfort ◽  
Main Entrance

Noise in shopping centers and restaurants can reduce intelligibility and affect the comfort of the employees working for long periods in such environments. In this study, the interior acoustics of a shopping mall are studied by measuring the reverberation time (RT), with no occupation, and the equivalent sound pressure levels (LAeq), with occupations at different times of the day, over a period of one week. The measurements were done at different locations, chosen based on their usage (shopping areas, entrances, food courts, and playing area). The values are correlated to the subjective acoustic comfort and the experience of loudness of the staff working at these locations, as measured through a questionnaire. The average RT values that were measured ranged between 0.9 s in the food court and 1.4 s for the main entrance. The LAeq was measured with a minimum of 58 dB in the shopping area in the early morning and a maximum of 83 dB in the playing area in the evening. The results showed an increase in the LAeq for the afternoon and evening in comparison with the early morning and midday time (p < 0.05); similarly, the sound levels for the weekends were higher than the weekdays (p < 0.05). The questionnaire results showed that headaches and difficulties in communicating with others (speech intelligibility) are the most important problems induced by the noise in shopping malls, occurring for 47.1% and 38.2% of respondents, respectively.

Research on the Vibration Measurement Approach to the On-Line Noise Evaluation for Vehicle Transmissions

2012 ◽  
Vol 562-564 ◽  
pp. 1163-1167
Author(s):  
Feng Qiang Zhao ◽  
Guang Qiang Li ◽  
Hong Ying Hu ◽  
Jia Lu Du ◽  
Chen Guo
Keyword(s):  
Sound Pressure Level ◽  
Production Line ◽  
Background Noise ◽  
Sound Pressure ◽  
Sound Level ◽  
Pressure Level ◽  
Vibration Measurement ◽  
Vehicle Transmissions ◽  
Quality Of Transmission ◽  
Level Meter

At present, the common method of testing noise generated by vehicle transmission before delivery is to measure the noise sound pressure level by means of sound level meter. Since the measurement result is susceptible to background noise, the method can only be operated in anechoic chamber. In this paper, in order to measure sound pressure level directly on production-line, a new vibration measurement method and its relevant formula are presented. The proposed method can effectively avoid being affected by background noise and obtain the sound pressure level of transmission noise on production-line by testing the vibration acceleration signals of transmission box. It’s proved that the new method makes the delivery test of transmission noise more convenient and effective. Moreover, it can improve the delivery quality of transmission as well as the performance of whole vehicle.

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