Analisis Pengaruh Volume Rongga Terhadap Kinerja Skyline Quadratic Residue Diffuser Resonator (SQRD-R) Sebagai Pengendali Kebisingan

Syamsia, Rahmawati Nurul (2021) Analisis Pengaruh Volume Rongga Terhadap Kinerja Skyline Quadratic Residue Diffuser Resonator (SQRD-R) Sebagai Pengendali Kebisingan. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kebisingan merupakan bunyi yang tidak dikehendaki. Kebisingan dapat dikendalikan dengan menambahkan material akustik pada ruangan seperti difuser, absorber berpori dan resonator. Berdasarkan penelitihan yang telah dilakukan oleh Lianto dilakukan pengembangan dan analisis desain SQRD yang merupakan material akustik, dimana SQRD di desain sehingga dapat menggabungkan dua fungsi yaitu sebagai difuser dan resonator. Panel SQRD dibuat dengan menggunakan kabel duct PVC pada konfigurasi 11 x 11 dengan lebar sekuen 5cm. Terdapat 3 variasi panel yang dibuat, yaitu SQRD-R tanpa tutup, SQRD-R tutup lubang dan SQRD-R variasi volume. Pemberian rongga dan tutup lubang menambahkan fungsi sebagai resonator. Dilakukan pula pengaturan volume rongga resonator dengan tujuan mengendalikan kebisingan pada frekuensi 63-103 Hz. Untuk menganalisa panel yang telah dibuat, dilakukan pengujian di Laboratorium Fisika Akustik dan Bangunan ITS untuk memperoleh direktifitas SPL, koefisien difus, koefisien hamburan dan nilai insertion loss. Melalui penelitihan yang telah dilakukan terjadi atenuasi bunyi pada frekuensi resonansi masing-masing variasi dan terjadi pula peningkatan difusifitas bunyi. Berdasarkan penelitian yang telah dilakukan, diperoleh hasil yang menunjukkan bahwa variasi volume pada masing-masing sekuen dapat meningkatkan kualitas kinerja resonator pada frekuensi 63 Hz -103 Hz yang dapat dilihat dari nilai IL berada pada rentang -6,5 dB hingga 21.9 dB dan kualitas kinerja difuser dapat dilihat pada nilai koefisien difus berada pada rentang 0.5 - 0.8. Serta, diperoleh 3 frekuensi pada koefisien hamburan (scattering) yang berada pada rentang nilai 0.5 – 1.
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Noise is an undesirable sound. Noise can be controlled by adding acoustic materials to the room such as diffusers, porous absorbers and resonators. Based on the research that has been done by Lianto conducted the development and analysis of SQRD design which is an acoustic material, where SQRD is designed so that it can combine two functions, as a diffuser and resonator. SQRD panels are made using PVC duct cables in a configuration of 11 x 11 with a 5 cm sequencing width. There are 3 panel variations created, namely SQRD-R without top, SQRD-R with hole in the top and SQRD-R volume variation. The adding of cavities and hole in the top gave a function as a resonator. The volume adjustment of the resonator cavity is also performed with the aim of controlling noise at a frequency of 63-103 Hz. To analyze the panels that have been created, tests were conducted at its Acoustic physics and building laboratory to obtain the SPL directive, diffusion coefficient, scatter coefficient and insertion loss value. Through research that has been done there is a sound attenuation at the resonance frequency of each variation and there is also an increase in the diffusion of sound. Based on the research that has been done, the results showed that the volume variation in each sekuen can improve the quality of resonator performance at a frequency of 63 Hz -103 Hz which can be seen from il values in the range of -6.5 dB to 21.9 dB and the quality of diffuser performance can be seen in the value of the diffuse coefficient is in the range of 0.5 - 0.8. Also, 3 frequencies are obtained in the scattering coefficient which is in the range of values 0.5 – 1.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	direktifitas SPL, insertion loss, koefisien difus, koefisien hamburan, SQRD. insertion loss, diffusion coefficient, scatter coefficient, SPL directive, SQRD.
Subjects:	Q Science > QC Physics Q Science > QC Physics > QC221 Acoustics. Sound
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Rahmawati Nurul Syamsia
Date Deposited:	26 Aug 2021 08:04
Last Modified:	26 Aug 2021 08:04
URI:	http://repository.its.ac.id/id/eprint/90051

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