Experimental and Numerical Investigations of Acoustic Variations in a Classroom Environment
The acoustic behaviour of a classroom is vital for an effective teaching-learning process. The present work aims to experimentally determine the acoustic performance of a typical classroom. The full-scale experiment was conducted at the Seminar Hall, the Department of Applied Mechanics, MNNIT Allaha...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2025-03-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/4122 |
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| author | Amit Kumar Singh CHAUHAN Ajitanshu VEDRTNAM Suryappa Jayappa PAWAR |
| author_facet | Amit Kumar Singh CHAUHAN Ajitanshu VEDRTNAM Suryappa Jayappa PAWAR |
| author_sort | Amit Kumar Singh CHAUHAN |
| collection | DOAJ |
| description | The acoustic behaviour of a classroom is vital for an effective teaching-learning process. The present work aims to experimentally determine the acoustic performance of a typical classroom. The full-scale experiment was conducted at the Seminar Hall, the Department of Applied Mechanics, MNNIT Allahabad, Prayagraj, using a method with limited resource requirements. The Seminar Hall was divided into four planes by threads, and the sound pressure level (SPL) was measured at 30 coordinates in each plane for the specified sound source location. Data were collected from three different sound source locations. The study revealed that the sound source location and frequency significantly influence the sound pressure levels in the classroom, impacting its acoustic performance. The broader implications of interior materials, such as wall material and the position of elements like the teaching board, door, and podium, are highlighted as critical considerations for future classroom acoustic optimization. Furthermore, a numerical model was developed to predict the variation in the SPL with change in the sound source locations and frequencies. The collected data validated with the finite element (FE) model. The verification experiments for the modeling results were performed for each plane. The results of the FE model and experiments were found consistent across all four planes of the seminar hall and the various sound source locations. |
| format | Article |
| id | doaj-art-1c8a8212c7224beaada269bb7a96bc9f |
| institution | Kabale University |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-1c8a8212c7224beaada269bb7a96bc9f2025-08-20T03:34:05ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2025-03-0150114715710.24425/aoa.2025.1536553695Experimental and Numerical Investigations of Acoustic Variations in a Classroom EnvironmentAmit Kumar Singh CHAUHAN0https://orcid.org/0000-0001-9452-1234Ajitanshu VEDRTNAM1https://orcid.org/0000-0002-6286-9663Suryappa Jayappa PAWAR2https://orcid.org/0000-0003-0309-7939Department of Mechanical Engineering, Motilal Nehru National Institute of Technology AllahabadDepartment of Mechanical Engineering, Invertis UniversityDepartment of Applied Mechanics, Motilal Nehru National Institute of Technology AllahabadThe acoustic behaviour of a classroom is vital for an effective teaching-learning process. The present work aims to experimentally determine the acoustic performance of a typical classroom. The full-scale experiment was conducted at the Seminar Hall, the Department of Applied Mechanics, MNNIT Allahabad, Prayagraj, using a method with limited resource requirements. The Seminar Hall was divided into four planes by threads, and the sound pressure level (SPL) was measured at 30 coordinates in each plane for the specified sound source location. Data were collected from three different sound source locations. The study revealed that the sound source location and frequency significantly influence the sound pressure levels in the classroom, impacting its acoustic performance. The broader implications of interior materials, such as wall material and the position of elements like the teaching board, door, and podium, are highlighted as critical considerations for future classroom acoustic optimization. Furthermore, a numerical model was developed to predict the variation in the SPL with change in the sound source locations and frequencies. The collected data validated with the finite element (FE) model. The verification experiments for the modeling results were performed for each plane. The results of the FE model and experiments were found consistent across all four planes of the seminar hall and the various sound source locations.https://acoustics.ippt.pan.pl/index.php/aa/article/view/4122acoustic measurementsfinite element methodroom acousticssound pressure levelsound source location |
| spellingShingle | Amit Kumar Singh CHAUHAN Ajitanshu VEDRTNAM Suryappa Jayappa PAWAR Experimental and Numerical Investigations of Acoustic Variations in a Classroom Environment Archives of Acoustics acoustic measurements finite element method room acoustics sound pressure level sound source location |
| title | Experimental and Numerical Investigations of Acoustic Variations in a Classroom Environment |
| title_full | Experimental and Numerical Investigations of Acoustic Variations in a Classroom Environment |
| title_fullStr | Experimental and Numerical Investigations of Acoustic Variations in a Classroom Environment |
| title_full_unstemmed | Experimental and Numerical Investigations of Acoustic Variations in a Classroom Environment |
| title_short | Experimental and Numerical Investigations of Acoustic Variations in a Classroom Environment |
| title_sort | experimental and numerical investigations of acoustic variations in a classroom environment |
| topic | acoustic measurements finite element method room acoustics sound pressure level sound source location |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/4122 |
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