Open-plan office noise levels, annoyance and countermeasures in Egypt

2011 ◽  
Vol 59 (2) ◽  
pp. 186
Author(s):  
Sayed Abas Ali
Keyword(s):  
Noise Levels ◽  
Open Plan

scholarly journals Reducing Indoor Noise Levels Using People’s Perception on Greenery

2013 ◽  
Vol 11 ◽  
pp. 19-27
Author(s):  
Christina E. Mediastika ◽  
Floriberta Binarti
Keyword(s):  
Prior Knowledge ◽  
Indoor Environment ◽  
Noise Levels ◽  
People’S Perception ◽  
Open Plan ◽  
Insignificant Difference ◽  
Lower Noise

Abstract Employees working in cubicles of open-plan offices in Indonesia were studied in regard to their perception on the ability of indoor greenery to reduce noise levels. Sansevieria trifasciata and Scindapsus sp were used. Each was placed in the cubicle and noise levels were measured without plants, with Sansevieria, and with Scindapsus in place. The meters showed very insignificant difference. However, responses to surveys indicated a perception of lower noise in the presence of greenery. This seemed to be supported by prior knowledge and preconception and may be useful in creating a “quieter” indoor environment.

scholarly journals A Comparison of Sound Levels in Open Plan Versus Pods in a Neonatal Intensive Care Unit

2016 ◽  
Vol 10 (3) ◽  
pp. 30-39 ◽  
Author(s):  
Karlie Ramm ◽  
Trudi Mannix ◽  
Yvonne Parry ◽  
Mary P. (Caroline) Gaffney
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Neonatal Intensive Care Unit ◽  
Observational Data ◽  
Neonatal Intensive Care ◽  
Careful Consideration ◽  
Noise Levels ◽  
Sound Levels ◽  
Open Plan ◽  
Average Noise Level

Objective: The objective of this study was to compare the noise levels recorded in two different neonatal intensive care unit (NICU) settings: a pod and an open plan NICU located in the same hospital. Background: The NICU is a busy environment with ambient noise levels that often exceed established recommendations. This noise deleteriously affects the physiological stability and developmental outcomes of sick and preterm infants. Pods have reduced numbers of cots (in this case, 6) compared to open plan NICUs (in this case, 11), yet the noise levels in pods have not been reported. Method: This study compared real-time decibel (dB) levels in an A-weighted scale, captured continuously by sound dosimeters mounted in both NICU settings for a period of 4 weeks: a pod setting and an open plan NICU. Researchers also collected observational data. Results: The average noise level recorded in the pod was 3 dBs less than in the open plan NICU. This result was statistically significant. However, dB recordings in both areas were over the recommended limits by 4–6 dBs, with isolated peaks between 74.5 dBs (NICU) and 75.9 dBs (pod). Observational data confirmed this correlation. Conclusions: Further research to evaluate interventions to decrease the noise levels in both settings are needed, especially during times of peak activity. Staff working in these settings need to be more aware that control of acoustic levels is important in the neuroprotection of neonates. Coupling this with careful consideration to structural components and evidence-based design planning may contribute to lowering dB levels in the NICU environment.

The Development of the Mealings, Demuth, Dillon, and Buchholz Classroom Speech Perception Test

2015 ◽  
Vol 58 (4) ◽  
pp. 1350-1362 ◽  
Author(s):  
Kiri T. Mealings ◽  
Katherine Demuth ◽  
Jörg Buchholz ◽  
Harvey Dillon
Keyword(s):  
Speech Perception ◽  
Future Research ◽  
Noise Levels ◽  
Helpful Tool ◽  
Perception Task ◽  
Performance Accuracy ◽  
Classroom Speech ◽  
Open Plan ◽  
Children's Speech ◽  
Noisy Condition

PurposeOpen-plan classroom styles are increasingly being adopted in Australia despite evidence that their high intrusive noise levels adversely affect learning. The aim of this study was to develop a new Australian speech perception task (the Mealings, Demuth, Dillon, and Buchholz Classroom Speech Perception Test) and use it in an open-plan classroom to assess how intrusive noise affects speech perception.MethodThe first part of this article describes how the online 4-picture choice speech perception task materials were created. The second part focuses on the study involving twenty-two 5- to 6-year-old children in an open-plan classroom who completed the task while other classes engaged in quiet and noisy activities.ResultsChildren's performance accuracy, number of responses, and speed were lower in the noisy condition compared with the quiet condition. In addition, children's speech perception scores decreased the farther away they were seated from the loudspeaker. Overall, the children understood and were engaged in the task, demonstrating that it is an appropriate tool for assessing speech perception live in the classroom with 5- to 6-year-old children.ConclusionsThe results suggest that the Mealings, Demuth, Dillon, and Buchholz Classroom Speech Perception Test is a helpful tool for assessing speech perception in classrooms and that it would be beneficial to use in future research investigating how classroom design and noise affect speech perception.

scholarly journals Office types and workers' cognitive vs affective evaluations from a noise perspective

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tobias Otterbring ◽  
Christina Bodin Danielsson ◽  
Jörg Pareigis
Keyword(s):  
Design Methodology ◽  
Empirical Support ◽  
Well Being ◽  
Subjective Well Being ◽  
Noise Levels ◽  
Content Type ◽  
Cognitive Evaluation ◽  
Evaluation Scores ◽  
Significant Difference ◽  
Open Plan

PurposeThis study aims to examine the links between office types (cellular, shared-room, small and medium-sized open-plan) and employees' subjective well-being regarding cognitive and affective evaluations and the role perceived noise levels at work has on the aforementioned associations.Design/methodology/approachA survey with measures of office types, perceived noise levels at work and the investigated facets of subjective well-being (cognitive vs affective) was distributed to employees working as real estate agents in Sweden. In total, 271 useable surveys were returned and were analyzed using analyses of variance (ANOVAs) and a regression-based model mirroring a test of moderated mediation.FindingsA significant difference was found between office types on the well-being dimension related to cognitive, but not affective, evaluations. Employees working in cellular and shared-room offices reported significantly higher ratings on this dimension than employees working in open-plan offices, and employees in medium-sized open-plan offices reported significantly lower cognitive evaluation scores than employees working in all other office types. This pattern of results was mediated by perceived noise levels at work, with employees in open-plan (vs cellular and shared-room) offices reporting less satisfactory noise perceptions and, in turn, lower well-being scores, especially regarding the cognitive (vs affective) dimension.Originality/valueThis is one of the first studies to compare the relative impact of office types on both cognitive and affective well-being dimensions while simultaneously testing and providing empirical support for the presumed process explaining the link between such aspects.

Damage Risk: An Evaluation of the Effects of Exposure to 85 versus 90 dBA of Noise

1976 ◽  
Vol 19 (2) ◽  
pp. 216-224 ◽  
Author(s):  
James T. Yates ◽  
Jerry D. Ramsey ◽  
Jay W. Holland
Keyword(s):  
White Noise ◽  
Statistical Difference ◽  
Noise Exposure ◽  
Threshold Shift ◽  
Temporary Threshold Shift ◽  
Noise Levels ◽  
Potential Damage ◽  
Full Day ◽  
Damage Risk

The purpose of this study was to compare the damage risk of 85 and 90 dBA of white noise for equivalent full-day exposures. The damage risk of the two noise levels was determined by comparing the temporary threshold shift (TTS) of 12 subjects exposed to either 85 or 90 dBA of white noise for equivalent half- and full-day exposures. TTS was determined by comparing the pre- and postexposure binaural audiograms of each subject at 1, 2, 3, 4, 6, and 8 kHz. It was concluded that the potential damage risk, that is, hazardous effect, of 90 dBA is greater than 85 dBA of noise for equivalent full-day exposures. The statistical difference between the overall effects of equivalent exposures to 85 dBA as compared to 90 dBA of noise could not be traced to any one frequency. The damage risk of a full-day exposure to 85 dBA is equivalent to that of a half-day exposure to 90 dBA of noise. Within the limits of this study, TTS t was as effective as TTS 2 for estimating the damage risk of noise exposure.

Environmental Satisfaction in Open-Plan Offices: 1. Scale Validation

2002 ◽  
Author(s):  
Kelly M.J. Farley ◽  
Jennifer A. Veitch
Keyword(s):  
Scale Validation ◽  
Open Plan

Determination of the Probability Distribution of the Mean Sound Level

2010 ◽  
Vol 35 (4) ◽  
pp. 543-550 ◽  
Author(s):  
Wojciech Batko ◽  
Bartosz Przysucha
Keyword(s):  
Probability Distribution ◽  
Probability Distribution Function ◽  
Mean Value ◽  
Sound Level ◽  
Function Form ◽  
Noise Levels ◽  
Logarithmic Mean ◽  
The Mean ◽  
Estimation Of Uncertainty

AbstractAssessment of several noise indicators are determined by the logarithmic mean <img src="/fulltext-image.asp?format=htmlnonpaginated&src=P42524002G141TV8_html\05_paper.gif" alt=""/>, from the sum of independent random resultsL1;L2; : : : ;Lnof the sound level, being under testing. The estimation of uncertainty of such averaging requires knowledge of probability distribution of the function form of their calculations. The developed solution, leading to the recurrent determination of the probability distribution function for the estimation of the mean value of noise levels and its variance, is shown in this paper.

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