Proposta de solução acústica para sala de música utilizando painéis de fibra de coco e drywall: um estudo aplicado à Escola de Música Maestro Almir Garcez Assaí, em Bacabal – MA

Abstract

This work proposes an innovative acoustic solution for classrooms, using panels made from coconut fiber waste in conjunction with the drywall system. The research was applied at the Maestro Almir Garcez Assaí Music School (EMMAGA) in Bacabal-MA, aiming to address the growing need for sustainable solutions in civil construction and the potential of green coconut husk fiber, an abundant waste in Brazil, as a sound-absorbing material. Initially, the sound conditions of room D-01 at EMMAGA were assessed through measurements of sound pressure levels, according to NBR 10152:2020, and estimation of reverberation time, using the Norris Eyring formula with the Reverb software, identifying deficiencies that compromise acoustic comfort. Subsequently, the performance of the proposed intervention, which combines coconut panels and double wall gypsum board, was simulated again adopting the absorption coefficients of the fiber panels and absorbing elements for calculation purposes, eleven musicians seated with instruments. The simulation results demonstrated a significant reduction and balance in reverberation, validating the effectiveness of the proposed solution. It is concluded that this combination of materials represents a viable, sustainable, and high-performance alternative for sound optimization in educational environments.