PROGRAMM - DAGA 2012

66 DAGA 2012 ProgrammDienstag (bis Mi. 12:00)Geräuschbeurteilung (Poster)A study of acoustic descriptors for an Environmental ImpactAssessment: a case study in Curitiba, BrazilM. Engel, F.H. Ferraz und P.H.T. ZanninFederal University of Parana, BrazilAn analysis was made of acoustic descriptors for the preparation ofan Environmental Impact Study. The parameters evaluated were: noisemeasurement time, the need for triplicate noise measurements, anddetermination of the grid spacing for noise mapping. The noise measurementsfor this study were taken at two distinct points on an avenuewith intense vehicle traffic, for time periods of 10, 15 and 30 min. Thestatistical analysis indicated that a measurement time of 10 min wasadequate for the Environmental Impact Assessment. A linear regressionyielded regression coefficients of 0.94 and 0.97 for the two measuredpoints, indicating that triplicate measures are unnecessary for the noisemeasurements of this case study. Maps were created with 10x10 m,15x15 m, 20x20 m, and 30x30 m grids in order to determine the bestgrid spacing for the noise map of this study. The results indicated thata grid size of 10x10 m is the most representative, since the area underevaluation is located in a densely populated region.Dienstag (bis Mi. 12:00)Geräuschbeurteilung (Poster)Fitness gyms - Evaluation of noise and its perceptionK.L.H. Anjelo, C.R.M. Passero und P.H.T. ZanninFederal University of Parana, BrazilOBJECTIVE: Evaluate the noise levels generated in fitness gym classesand identify the auditory and extra-auditory complaints of gym users.METHOD: The measurements were taken with BK 2238 and BK 2260sound level meters. A questionnaire was applied to ascertain the auditoryand extra-auditory complaints and questions regarding noise frequencyand permanence time. Sampling comprised 24 users dividedamong six fitness gyms. RESULTS: The sound pressure levels variedfrom 73.9 to 94.2dB(A), indicating that the noise levels in some fitnessgyms exceed the limit established by Brazilian legislation on occupationalnoise, which is Leq = 85dB(A). Of the total number of intervieweeswho answered the questionnaire, 88% reported that high sound levelsare stimulating for physical exercising. Only 12% claimed that the noiselevel is disturbing, stating that they have a headache at the end of theirworkout. CONCLUSIONS: Although most of the gym users did not reportbeing disturbed by the noise levels in the fitness gym, these levelsshould be lowered urgently, since the cases evaluated here revealedmeasured noise levels similar to those found in industrial environments.