Dwiyanti, Evi (2017) Studi Awal Pengukuran Koefisien Hamburan Dan Pola Hamburan Concaveconvex Difuser Dari Tempurung Kelapa Muda. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Peneltian tentang pengukuran koefisien hamburan dan pola
hamburan pada concave-convex difuser dengan tujuan untuk
mengetahui nilai koefisien hamburan concave-convex difuser dan
mengetahui pola hamburan concave-convex difuser. Pada
penelitian ini digunakan reverberation room dan anechoic
chamber fisika fmipa ITS. Berdasarkan hasil pengukuran yang
telah dilakukan disimpulkan bahwa pada sudut 0 derajat nilai yang
paling besar adalah difuser dengan pola concave 100% pada
frekuesi 500 Hz yaitu 0,84.Pada sudut 30 derajat nilai yang paling
besar adalah difuser dengan pola concave 100% pada frekuensi
250 Hz yaitu 0,53 . Pada sudut 60 derajat nilai yang paling besar
pada pola concave-convex pada frekuensi 4000 Hz yaitu 0,99.
Pada pola hamburan, berdasarkan pengukuran didapat bahwa
semakin tinggi frekuensi sumber bunyi yang diberikan semakin
besar pula penambahan SPL yang terjadi. Pada pola hamburan
difuser convex 50% memiliki karakter yang signifikan di frekuensi
tinggi.
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Research on measurement of scattering coefficient and
scattering patterns in concave-convex diffuser to determine the
value of the scattering coefficient concave-convex diffuser and
determine the pattern of concave-convex scattering diffuser. This
research used reverberation room and anechoic chamber in ITS
Physics Laboratory. Results of measurements that have been
carried out concluded that the angle of 0 degrees greatest value is
the diffuser with a concave pattern of 100% at 500 Hz which
frekuesi 0,84.Pada 30 degree angle greatest value is the diffuser
with a concave pattern of 100% at a frequency of 250 Hz is 0.53.
At an angle of 60 degrees the largest value in the concave-convex
pattern at a frequency of 4000 Hz is 0.99. In the scattering patterns,
found that the higher the frequency of the sound source is given the
greater the addition of SPL happened. In the scattering pattern
convex diffuser 50% had a significant character in the high
frequencies.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Scattering coeffient, Scattering pattern, Young coconut Shell Koefisien hamburan, Pola hamburan, Tempurung kelapa muda. |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | EVI EVI DWIYANTI |
| Date Deposited: | 02 May 2017 04:49 |
| Last Modified: | 08 Mar 2019 03:30 |
| URI: | http://repository.its.ac.id/id/eprint/3452 |
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