sound pressure level meter
ASSESSMENT AND MODELLING OF NOISE DUE TO RAILWAY ASSETS FOR LUCKNOW CITY
... 1 sound pressure level meter was used to measure the sound level produced at each ...point.The sound pressure level meter was placed at a height of ...
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The Influences of Individual Sensitivity, Sound Frequency, and Sound Pressure Level on Cognitive Performances of Students
... noise level meter (SVANTEK 971 model, made in Poland -America) based on the IEC 61672 ...the sound levels at either 1:1 or 1: 3-octave ...noise level in the chamber is lower than 30 dB when ...
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Noise Levels in a Medical Intensive Care Unit
... Integrated Sound Level Meter (China) was used for continuous every five seconds one week noise levels ...decibel meter was used for recording different location of isolation rooms and open ...
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A STUDY OF NOISE LEVEL IN TRIMBAKESHWAR AND IGATPURI TOWN BELONGING TO NASHIK DISTRICT IN MAHARASHTRA STATE DURING NORMAL DAYS.
... blood pressure, Johnson and Hansin (1977) in one of their studies found that systolic and diastolic blood pressures were significantly higher in industrial workers because of continuous exposure to ...noise ...
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A study on ambient and traffic noise pollution in Vijayawada, Andhra Pradesh, India
... unwanted sound that is harmful, annoying, causes disturbance and may adversely impact the work efficiency and ...Noise level increases with traffic volume in an exponential manner and depends on several ...
9
Monitoring of Noise During Ganeshotsav
... ‘Sound Level Meter’ is an instrument used for measurement of ...the sound in approximately same way as human ear perceives it, ...of pressure difference. Some sound level ...
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Active noise cancellation in the rectangular enclosure systems
... The Sound Pressure Level (SPL) was measured to determine the frequency that will be used to conduct an experimental work regarding to performance of the ANC ...the Sound Level ...
5
Assessment of Sound Levels in a Neonatal Intensive Care Unit in Tabriz, Iran
... of sound have several negative effects, such as noise-induced hearing loss and delayed growth and development, on premature infants in neonatal intensive care units ...reduce sound levels, they should first ...
8
Conditioned hearing sensitivity reduction in a bottlenose dolphin (Tursiops truncatus)
... loud sound can result in a temporary or permanent reduction of hearing sensitivity, manifesting itself in temporary or permanent threshold shifts (TTS or ...loud sound was presented many times during an ...
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Influence of motorcycle and operator characteristics on sound pressure level measured at the ear of the operator.
... In 1 9 6 3 , a paper written by Karl D. Kryter (13) contained the opening sentence; "For the past 15 years or so there has been considerable speculation about so called damage risk criteria for exposure to ...
172
Airborne sound insulation in terms of a loudness model
... For the weighting, it is assumed that two psychoacoustic parameters can be applied, namely, the specific fluctuation strength, Fls’ (vacil), and the specific roughness, R’ (asper), because they are related to the ...
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Echolocation signal structure in the Megachiropteran bat Rousettus aegyptiacus Geoffroy 1810
... Microchiropteran bats possess sophisticated echolocation systems, which are well matched to their ecological niche (Fenton, 1995). They employ a range of call types, consisting of frequency modulated and/or constant ...
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Underwater Hearing in the Frog, Rana Catesbeiana
... Comparable auditory sound pressure level SPL and sound intensity level SIL threshold curves were determined in air and under water in Rana catesbeiana.. Threshold curves were determined [r] ...
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Investigation Vehicle Cabin Noise Using Arduino Data Logger
... vibration level in various degrees affected by different roads for example more vibration will contribute on rough ...that level of sound can be produced differences by the characteristics of the ...
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A Study Of Safety And Health Awareness And Noise Assessment At Stamping Die Company
... Laporan ini disediakan untuk menerangkan kajian kesedaran keselamatan dan kesihatan di kalangan pekerja dan penilaian bunyi di syarikat acuan dan alat tekan. Kajian ini meliputi Akta Keselamatan & Kesihatan Pekerjaan ...
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Population level consequences of seismic surveys on fishes : an interdisciplinary challenge
... What is needed is accurate field data for sound-exposure- induced changes in behavioural and physiological parameters that canenterthemodels.Thesedatashouldbecollectedunderavariety ...
33
Research Study On The Noise Level At The NGV Engine
... noise level area in the aspects of safety, durability and stability that might come from the usage of ...the sound or noise level which can necessarily resulting in the sound pollution and ...
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Sound Source Measurement of a Semi Circular Cylinder in a Uniform Flow by Particle Image Velocimetry
... sound speed diameter of cylinder frequency acoustic sound distance from sound source Reynolds number =UD/ν sound pressure level dB Strouhal number =fD/U velocity vector mean velocities i[r] ...
9
Apparent source levels and active communication space of whistles of free ranging Indo Pacific humpback dolphins (Sousa chinensis) in the Pearl River Estuary and Beibu Gulf, China
... noise level (estimated to be ...noise level at sea state 0 and 4 respectively used for the estimation of the whistle communication range of bottlenose dolphins at Moray Firth (Janik, 2000a), and almost ...
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A low noise duct ventilation using C- transition curve design
... Next, according to Mak (2002), flow-generated noise generated in a ventilation system is the result of interaction between air flow and the duct discontinuities. Thus, it is essential to predict the flow-generated noise ...
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