A new method for analysis of the modal characteristics of small rectangular rooms
The main aim of the study was to compare acoustic comfort in eighteen rectangular classrooms, using a new method for modal analysis. Taking into regard the Schroeder frequency as the upper frequency limit, a statistical fluctuation in frequency spacing was calculated for all modes (parameters A and...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2014-04-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/739 |
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| author | M. A. Błaszak |
| author_facet | M. A. Błaszak |
| author_sort | M. A. Błaszak |
| collection | DOAJ |
| description | The main aim of the study was to compare acoustic comfort in eighteen rectangular classrooms, using a new method for modal analysis. Taking into regard the Schroeder frequency as the upper frequency limit, a statistical fluctuation in frequency spacing was calculated for all modes (parameters A and B) and axial modes separately (parameters C and D). Considering the range extended by about 30% towards higher frequencies, when compared to Bolt assumptions, it appeared that the rooms did not satisfy the Bolt criterion changed significantly their modal regularity. The enclosure with the ideal proportions, according to R.H. Bolt (1 : 1.5 : 2.5) had the A value higher than a few rooms of other proportions and hence, was characterized by greater statistical fluctuation in frequency spacing. |
| format | Article |
| id | doaj-art-03f8753c4abb45f6936efe5c727d0b97 |
| institution | Kabale University |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2014-04-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-03f8753c4abb45f6936efe5c727d0b972025-08-20T03:50:45ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2014-04-01314A new method for analysis of the modal characteristics of small rectangular roomsM. A. Błaszak0Adam Mickiewicz University, Institute of AcousticsThe main aim of the study was to compare acoustic comfort in eighteen rectangular classrooms, using a new method for modal analysis. Taking into regard the Schroeder frequency as the upper frequency limit, a statistical fluctuation in frequency spacing was calculated for all modes (parameters A and B) and axial modes separately (parameters C and D). Considering the range extended by about 30% towards higher frequencies, when compared to Bolt assumptions, it appeared that the rooms did not satisfy the Bolt criterion changed significantly their modal regularity. The enclosure with the ideal proportions, according to R.H. Bolt (1 : 1.5 : 2.5) had the A value higher than a few rooms of other proportions and hence, was characterized by greater statistical fluctuation in frequency spacing.https://acoustics.ippt.pan.pl/index.php/aa/article/view/739classroomseigenmodes |
| spellingShingle | M. A. Błaszak A new method for analysis of the modal characteristics of small rectangular rooms Archives of Acoustics classrooms eigenmodes |
| title | A new method for analysis of the modal characteristics of small rectangular rooms |
| title_full | A new method for analysis of the modal characteristics of small rectangular rooms |
| title_fullStr | A new method for analysis of the modal characteristics of small rectangular rooms |
| title_full_unstemmed | A new method for analysis of the modal characteristics of small rectangular rooms |
| title_short | A new method for analysis of the modal characteristics of small rectangular rooms |
| title_sort | new method for analysis of the modal characteristics of small rectangular rooms |
| topic | classrooms eigenmodes |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/739 |
| work_keys_str_mv | AT mabłaszak anewmethodforanalysisofthemodalcharacteristicsofsmallrectangularrooms AT mabłaszak newmethodforanalysisofthemodalcharacteristicsofsmallrectangularrooms |