So, the noise level that should not be exceeded for daylight hours was taken 55 Leq
dB(A), considering the values given in related documents (WHO 1996; RENAM 2010).
The highest conversion can be obtained when using molar ratio of ATA and TBAB to MAn at 3eq and leq
Exposure to equivalent noise level (Leq
) in each station was 8 hours of daily exposure and 40 hours of weekly exposure.
(2011) developed the Learning and Engagement Questionnaire (LEQ
) as a tool for teachers to measure their perceived use of instructional and environmental variables associated with learner engagement.
A continuacion vamos a presentar parte de los resultados de la tesis doctoral "Estudio de la influencia de determinadas variables en el ruido urbano producido por el trafico de vehiculos" desarrollada en el Departamento de Ingenieria Civil: Construccion, en la cual se ha medido la Leq
en 519 puntos de calles de Madrid, a diferentes horas y en diferentes dias.
Octave band equivalent sound levels (Leq
, integrated average over measurement time span) were examined for ambient conditions near the existing chiller (with the chiller off) and at the nearest residential property line with the chiller running at 25% capacity.
Additional funding was sourced from the Assembly Government's Local Environmental Quality (LEQ
) fund and Cardiff council's Tidy Towns fund.
The recommended basic methods for evaluating acoustical performance of commercial buildings include an occupant survey to identify perceived acoustical problems in the building and a survey of the A-weighted sound pressure level (Leq
in dBA) in occupied spaces.
En la Tabla II se presenta la medicion del ruido ambiental en las 10 areas evaluadas, encontrandose que el 78% (7/9) de ellas tenian niveles de ruido continuo equivalente (Leq
) que excedieron 85 dB(A), el cual es el nivel permisible recomendado en la NVC 1565-95.
Park size, tree density and tree canopy cover were determined, and the equivalent noise level (LEQ
) during 8-23min per site was measured.