Journal ArticleDOI
Relating human productivity and annoyance to indoor noise criteria systems
Erica E. Bowden,Lily M. Wang +1 more
TLDR
To support the use of any individual criterion, subjective testing was performed under a range of background noise situations and statistically related to the various noise criteria predictors listed above.Abstract:
The goal of this research is to determine a noise criteria system which best relates the effects of background noise to human productivity and annoyance. A number of indoor noise criteria systems are currently used to rate the background noise in built environments, including noise criteria (NC), balanced noise criteria (NCB), room criteria (RC), room criteria Mark II (RC‐Mark II), and others. Many questions still remain about the accuracy of these predictors in assessing human response to background noise under the variety of ambient noise situations encountered. To support the use of any individual criterion, subjective testing was performed under a range of background noise situations and statistically related to the various noise criteria predictors listed above. Subjects completed an annoyance survey and performed typing and proofreading tasks in an acoustically controlled environment under 12 simulated background noise settings. These settings varied across three sound levels and four spectral qualities. Subjective testing methodology and results are presented. [Work supported by INCE and ASHRAE.]read more
Citations
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Journal ArticleDOI
Effects of noise on mental performance and annoyance considering task difficulty level and tone components of noise.
TL;DR: The results show the effect of tonal noise on annoyance and mental performance especially in different levels of task difficulty, and suggest that neural network models have high accuracy and efficiency, and can be used to predict noise annoyance.
An analytical model for broadband sound transmission loss of a Finite Single Leaf Wall using a two degree of freedom resonant Metamaterial
TL;DR: In this article, the authors investigated the possibility of using AMs for increasing the sound insulation of finite single leaf walls (SLW), focusing on the coincidence effect problem, and derived formulas using a variational technique for the forced sound transmission of finite SLW with a coupled array of two degree of freedom resonators.
Relationship productivity with noise patterns found in cycles of loading and transport in open quarries
TL;DR: A metodologia de recolha de dados de níveis sonoros, seguiu e teve em conta as principais etapas, sugeridas pela legislação e normalização em vigor, acompanhado pela análise do conteúdo do trabalho desenvolvido nos postos de trabalhe em análeise, de modo a também permitir que passassem a ser tratados de uma forma individual
Journal ArticleDOI
Occupational risk in a glass manufacturing industry unit
TL;DR: In this paper, a preliminary evaluation of a welding plant and, from the different measurable parameters, noise was considered the most critical, and another approach that may allow us to identify the technique with which a weld is being performed.
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