Analisis Pengaruh Perubahan Posisi Sekuen Terhadap Kinerja Skyline Quadratic Residue Diffuser Resonator (SQRD-R)

Rifdah, Dzakirotur (2021) Analisis Pengaruh Perubahan Posisi Sekuen Terhadap Kinerja Skyline Quadratic Residue Diffuser Resonator (SQRD-R). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Skyline Quadratic Residue Diffuser Resonator (SQRD-R) merupakan panel dengan prinsip diffuser dan resonator. Terdapat dua variasi SQRD-R pada penelitian ini yaitu SQRD-R berongga (tanpa tutup) dengan menggunakan prinsip frekuensi resonansi pada pipa organa tertutup dan SQRD-R berlubang (tutup lubang) dengan prinsip Resonator Helmholtz. SQRD-R disusun dengan pola yang sama seperti QRD multidimensional. Penelitian ini bertujuan mengamati pengaruh perubahan posisi sekuen pada panel QRD Skyline, SQRD-R berongga, dan SQRD-R berlubang terhadap kinerja masing-masing panel. Dengan menggunakan ukuran panel N=11 dan variasi pergeseran posisi mulai dari konfigurasi simetri (V0), pergeseran satu (V1) hingga pergeseran lima (V5) didapatkan nilai dari beberapa parameter yaitu direktifitas SPL, koefisien difus, insertion loss dan koefisien hamburan. Hasil menunjukkan perubahan posisi sekuen pada QRD Skyline tidak mengalami perubahan yang signifikan. Sedangkan pada SQRD-R berongga dan SQRD-R berlubang akan terdapat perbedaan saat posisi panel memiliki konfigurasi simetri (S=0 berada di tengah). Pada konfigurasi tersebut SQRD-R berongga dan SQRD-R berlubang pada frekuensi resonansi memiliki kinerja yang lebih baik daripada variasi pergeseran lainnya.
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Skyline Quadratic Diffuser Resonator (SQRD-R) is a panel with the diffuser and resonator principles. There are two variations of SQRD-R in this research, a first SQRD-R Without Top using the resonant frequency principle on the one open end organ pipe and the second a SQRD-R With Hole with Helmholtz's resonator principle. SQRD-R is structured in the same pattern as multidimensional QRD. This research aims to observe effects of sequencing changes in QRD Skyline panels, SQRD-R Without Top panels, and SQRD-R With Hole panels in each panel's performance. Using the size of the N =11 panels and variations of the shifting positions ranging from symmetrical configuration (V0), one-shift (V1) to a five-shift (V5) got a value from the multiple parameters of the SPL directivity, diffusion coefficient, insertion loss and scattering coefficient. The results show a sequel change in QRD Skyline did not change significantly. Whereas a SQRD-R Without Top and a SQRD-R With Hole will make a difference when the position of the panel has a symmetrical configuration (S=0 being in the middle). In these configurations, SQRD-R Without Top and SQRD-R With Hole at resonant frequencies have better performance than other shift variations.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Frekuensi resonansi, Koefisien dfusi, Koefisien hamburan, QRD Skyline, SQRD-R, Diffusion coefficient, QRD Skyline, Resonant frequency, Scattering coefficient, SQRD-R
Subjects:	Q Science > QC Physics > QC221 Acoustics. Sound
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Dzakirotur Rifdah
Date Deposited:	27 Aug 2021 04:02
Last Modified:	27 Aug 2021 04:02
URI:	http://repository.its.ac.id/id/eprint/90029

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