Acoustech: low-cost acoustic design and treatment in ece classrooms with integrated sound system/ Raven Charles M. Aguilar, Jhone Reynald D. Apostol, Ellezar Von O. Canivel, Gherrish Maye L. Jerusalem, Charls Justin S. Panlilio, and Jaque Faith M. Uson.--

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Aguilar, Raven Charles M [author]

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TextPublication details: Manila: Technological University of the Philippines, 2025.Description: xxx, 388pages: 29cmContent type:

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BTH TK 870 A38 2025

Dissertation note: College Of Engineering.-- Bachelor of science in electronics engineering: Technological University of the Philippines, 2025. Summary: Poor acoustics in classrooms, including excessive noise, reverberation, and unclear speech transmission, severely hindered students' ability to concentrate and comprehend lessons, ultimately affecting their academic performance. Previous research had established the negative impact of inadequate acoustic environments on learning, with studies highlighting how noise and high reverberation levels disrupted speech clarity and focus (Choi et al., 2018; Damián-Chávez et al., 2021). To address these issues, this study focused on improving the acoustics of five Electronics Engineering (ECE) classrooms at the Technological University of the Philippines – Manila by designing and implementing a low-cost acoustic treatment plan. Sound parameters such as clarity index, sound pressure level (SPL), and reverberation time (RT) were measured under three (3) conditions using REW software and testing equipment. Based on the findings, the COE52 and E34 shows a necessity for an acoustic treatment. Following the implementation of the acoustic treatment, a sound system was designed thru correct positioning in the room to enhance speech intelligibility and reduce vocal strain for instructors. The results demonstrated significant improvements in all the parameters which created a more conducive learning environment. The reverberation time of room COE52 improved from 0.96s to 0.72s, its clarity index from 113dBA to 93dBA, and its SPL from 134dBA to 101dBA. The parameters for room E34 has also improved from 1.45s to 0.76s reverberation time, from 128dBA to 105dBA clarity index, and from 113dBA to 103dBA for SPL, both under condition 2 and covers all the frequencies for RT. This study offered valuable insights into the application of affordable acoustic treatments in educational settings, contributing to the enhancement of classroom acoustics and student engagement.

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Bachelor's thesis

College Of Engineering.--
Bachelor of science in electronics engineering: Technological University of the Philippines,
2025.

Includes bibliographic references and index.

Poor acoustics in classrooms, including excessive noise, reverberation, and unclear
speech transmission, severely hindered students' ability to concentrate and comprehend lessons,
ultimately affecting their academic performance. Previous research had established the negative
impact of inadequate acoustic environments on learning, with studies highlighting how noise and
high reverberation levels disrupted speech clarity and focus (Choi et al., 2018; Damián-Chávez et
al., 2021). To address these issues, this study focused on improving the acoustics of five
Electronics Engineering (ECE) classrooms at the Technological University of the Philippines –
Manila by designing and implementing a low-cost acoustic treatment plan. Sound parameters
such as clarity index, sound pressure level (SPL), and reverberation time (RT) were measured
under three (3) conditions using REW software and testing equipment. Based on the findings, the
COE52 and E34 shows a necessity for an acoustic treatment. Following the implementation of the
acoustic treatment, a sound system was designed thru correct positioning in the room to enhance
speech intelligibility and reduce vocal strain for instructors.
The results demonstrated significant improvements in all the parameters which created a
more conducive learning environment. The reverberation time of room COE52 improved from
0.96s to 0.72s, its clarity index from 113dBA to 93dBA, and its SPL from 134dBA to 101dBA.
The parameters for room E34 has also improved from 1.45s to 0.76s reverberation time, from
128dBA to 105dBA clarity index, and from 113dBA to 103dBA for SPL, both under condition 2
and covers all the frequencies for RT. This study offered valuable insights into the application of
affordable acoustic treatments in educational settings, contributing to the enhancement of
classroom acoustics and student engagement.

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