Dissertação
Simulação acústica de salas de aula em escolas de educação básica: uma proposta tipológica para prática musical
Fecha
2012-09-24Registro en:
BRUM, Cristhian Moreira. Acoustic simulation of classrooms in basic education schools: a tipology for the music practice. 2012. 150 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal de Santa Maria, Santa Maria, 2012.
Autor
Brum, Cristhian Moreira
Institución
Resumen
The study of room acoustics is linked to the importance of sound inside a room, so the architectural characteristics of the internal space determine the acoustic
behavior. To get better acoustics of a room there are computational methods that
simulate the acoustic behavior of a room before his execution, providing the
prediction of the simulated environment behavior from the acoustic point of view. The
acoustic parameters of the resulting acoustic simulations as Reverberation Time,
Initial Decay Time, Clarity, Sharpness and Speech Transmission Index, are
responsible for identifying the acoustic conditions of the geometric model of a
classroom.
This geometric model used as sample classrooms of different types of municipal
schools in Santa Maria - RS, with the aim of developing a classroom typology for the
music teaching from virtual acoustic models using computing simulation. Geometric
models of classrooms for teaching music were developed using as input data,
dimensions, shapes and elements usually used in these environments and
developed representative virtual acoustic models these virtual classrooms, in which
were measured acoustic parameters related to the reverberation time from the
impulse response of the acoustic models of virtual rooms.
We analyzed the experimental results and simulated with and without furniture for the
acoustic parameters, and these comparisons were related to the values of JND (Just
Noticeable Difference) near the standard tolerance according to ISO 3382/2009 with
normalized values of 500 Hz to 1000 Hz. A geometric study was developed based on
Bolt (1946) which defined the appropriate geometric measures of the room. Thus, a
functional typology was originated which meets the architectural acoustic
requirements and the initial proposal of presenting a music classroom typology
providing an environment with acoustic quality, according to Law number
11.769/2008 that inserts education music in schools on a mandatory basis.