Evaluasi Kinerja Loudspeaker Polyhedral Berdasarkan Pola Radiasi Driver Speaker.

Putri, Puspita Yuandika (2022) Evaluasi Kinerja Loudspeaker Polyhedral Berdasarkan Pola Radiasi Driver Speaker. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian sebelumnya telah dibuat Vibrastic Dodecahedron dengan tiga dimensi yang digunakan sebagai sumber suara dalam pengukuran akustik. Pada tugas akhir ini dilakukan analisis terhadap parameter directivity, respon frekuensi dan tingkat tekanan bunyi untuk mengetahui pengaruh kinerja driver speaker, serta simulasi loudspeaker polyhedral selain dodecahedron dengan ukuran 2.5 inch untuk mengetahui pola radiasinya. Untuk driver speaker 5 inch menghasilan pola keterarahan yang omnidirectional pada frekuensi 125 Hz – 250 Hz dan mampu menghasilkan 61 dBA – 96 dBA dengan flat response pada frekuensi 2000 Hz - 4000 H. Untuk driver speaker 4 inch menghasilan pola keterarahan yang omnidirectional pada frekuensi 500 Hz dan mampu menghasilkan 55 dBA – 92 dBA dengan flat response pada frekuensi 4000 Hz hingga 8000 Hz. Untuk driver speaker 2.5 bersifat directional dan menghasilkan 59 dBA – 83 dBA dengan flat response yang terjadi pada rentang frekuensi 1000 Hz hingga 2000 Hz. Hasil simulasi loudspeaker polyhedral dengan driver speaker 2.5 inch menunjukkan bahwa hexahedron menghasilkan kinerja sebagai sumber omnidirectional yang baik dibandingkan bentuk yang lain. Pada penelitian ini juga dilakukan perhitungan untuk memprediksi error yang dihasilkan loudspeaker polyhedral berdasarkan akumulasi dari ketidakpastian pengukuran driver speaker. Driver speaker yang menunjukkan prediksi akumulasi error terkecil pada loudspeaker dengan sisi terkecil yaitu tetrahedron menggunakan driver speaker 5 inch dengan error sebesar 0.4%.
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Vibrastic Dodecahedrin with three dimensions has been designed in previous research which is used as a sound source in acoustic measurements. In this final project, analysis of directivity parameters, frequency response and sound pressure has been done to determine the effect of driver speaker performance on polyhedral loudspeaker performance by measuring driver speaker, and simulation of polyhedral loudspeakers other than dodecahedron with a size of 2.5 inches to determine the radiation pattern. The 5 inch speaker driver produces an omnidirectional pattern at a frequency of 125 Hz – 250 Hz and is capable of producing 61 dBA – 96 dBA with a flat response at a frequency of 2000 Hz - 4000 H. For the 4 inch speaker driver produces an omnidirectional pattern at a frequency of 500 Hz and capable of producing 55 dBA – 92 dBA with a flat response at a frequency of 4000 Hz to 8000 Hz. The 2.5 inch speaker driver produces a directional pattern and capable of producing 59 dBA – 83 dBA with a flat response that occurs in the 1000 Hz to 2000 Hz frequency range. The simulation results of a polyhedral loudspeaker with a 2.5 inch speaker driver shows that the hexahedron produces better performance as an omnidirectional source compared to other forms. In this research a calculation also has been conducted to predict error that will be produced by loudspeaker polyhedral using the uncertainty of the driver speaker measurements. It shows that the smallest error accumulation prediction on the loudspeaker is tetrahedron with 5 inch driver speakers and produces an error of 0.4%.

Item Type:	Thesis (Other)
Additional Information:	RSF 621.382 84 Put e-1 2022
Uncontrolled Keywords:	Loudspeaker Polyhedral, Driver Speaker, Pola Keterarahan. Loudspeaker Polyhedral, Driver Speaker, Directivity Pattern.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	11 May 2026 03:22
Last Modified:	11 May 2026 03:22
URI:	http://repository.its.ac.id/id/eprint/133108

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