Examinando por Materia "Classrooms"
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- PublicaciónAcceso abiertoAnálisis de factores de confort acústico y su relación con variables de ventilación de entrada en aulas de instituciones educativas ubicadas en ciudades de clima tropical (caso de estudio Medellín)(2018) Rendón Giraldo, Jeiser; Tafur Jiménez, Luis Alberto; Morales Maya, CatalinaThe following research framed within the research project "Identification of factors of environmental performance (acoustic, thermal and visual) determinants of the mental health of teachers and students of public schools in Bogotá, Medellín and Cali, evaluates some variables of the current conditions of acoustic comfort and ventilation that public educational institutions of Medellin and the impact of ventilation on acoustic comfort. The analysis starts from the question that arises, before the educational buildings developed after the year 2000, year in which the Colombian Technical Norm NTC4595 "Approach and design of school facilities and environments" was published. It becomes relevant in this investigation to know the conditions of comfort in the educational classrooms and to evaluate the adoption of its content by the construction sector. The methodology used for this research, takes as sample 3 educational institutions, in which 7 classrooms were measured, from each classroom the building, geographical, acoustic information and the typology of the openings used for natural ventilation were raised. In addition, other quantitative variables that could help to clarify the results as they were (internal temperature, internal air velocity at the entrance of the opening, relative humidity and atmospheric pressure). In the analysis of results, it was found that a large percentage of the classrooms comply with the ventilation parameters established by NTC4595 (effective area of ventilation and height); but, they overcome the acoustic variables (background noise, reverberation time and transmission loss).
- PublicaciónAcceso abiertoDeterminación del efecto causado en procesos cognitivos por el tiempo de reverberación y ruido de fondo mediante el uso de auralizaciones(2018) Restrepo Dávila, Felipe; Ochoa Villegas, JonathanIn this work, the experimental design was presented in the form of a replica, in which a sample of sixty university students was evaluated in order to determine the effect caused by reverberation time and background noise on the cognitive processes of memory, attention and executive functions, seeking to contrast the results obtained in previous researches. Statistical analysis is presented in order to relate the effect of these acoustic parameters. Five psychological instruments were applied where four of these psychological instruments were auralized taking into account the acoustic conditions measured and the hypothetical treatment of the mini auditorium 2 of the University of San Buenaventura, San Benito Medellín. For the application of the test, the recording room of studio A of the University of San Buenaventura Medellín was used and the psychological instruments were reproduced using the Opsodis binaural reproduction system as specified in the connection diagram of section VII.A and the distribution within the recording room as shown in Figure 8. It was found that the results found in previous theses where the impact of reverberation time and background noise on cognitive processes was evaluated are similar, corroborating in the same way the foreign investigations, where it is proven that background noise and reverberation time significantly affect attention, memory and executive functions, being reverberation time the most affected acoustic parameter. High background noise causes interference in the communication of verbal messages, causing the individual to remain in an unnecessarily high attention span, which can have negative health effects such as fatigue and stress. The long reverberation time in turn causes loss of speech intelligibility, i.e. verbal messages are partially understood or sometimes confused