Budhiarso, Harits Surya (2019) Smart Amplifier: Pengaturan Gain Amplifier Berdasarkan Arah dan Jarak Audiens. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Audio amplifier merupakan sebuah device yang digunakan untuk menguatkan sinyal suara sebelum diumpankan ke loudspeaker. Penggunaan amplifier dan loudspeaker tidak dapat dipisahkan. Loudspeaker sering kita jumpai sehari-hari di dalam dan luar ruangan. Loudspeaker biasanya digunakan untuk menyampaikan informasi kepada audiens. Tentunya suara yang dihasilkan harus jelas agar tidak menimbulkan kebisingan. Terkadang loudspeaker juga tetap mengeluarkan suara meski tidak ada audiens. Tentunya hal tersebut merupakan pemborosan daya. Salah satu cara untuk mengatasi masalah tersebut adalah dengan mendeteksi keberadaan audiens dan mengarahkan suaranya sehingga dapat mengurangi penggunaan dayanya. Pada tugas akhir ini dibuat sebuah sistem Smart Amplifier yang merupakan pengarah suara berdasarkan arah dan jarak audiens. Sistem yang dibuat terdiri dari termal kamera AMG8833, mikrokontroler Arduino Mega 2560, 3 buah PGA, 3 buah amplifier TDA2030, dan 3 buah loudspeaker. Termal kamera digunakan untuk mendeteksi arah dan jarak audiens. Sedangkan PGA digunakan untuk mengatur penguatan suara agar intensitas suara dapat diatur sesuai arah dan jarak audiens. Hasilnya, sistem mampu mengarahkan suara di dalam ruangan pada sudut -30° sampai +30° dengan rata-rata kesalahan 3,33% pada jarak 1m, 5,6% pada jarak 1,5m, 7,27% pada jarak 2m, dan 20% pada jarak 2,5m. Sedangkan di luar ruangan memiliki rata-rata kesalahan 7,78% pada jarak 1,5m. Diharapkan sistem ini mampu mengurangi penggunaan daya dan menekan biaya pengeluaran yang ditimbulkan akibat penggunaan audio amplifier.
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Audio amplifier is a device to amplify sound signals before its fed to the loudspeaker. Both devices cannot be separated. Loudspeakers are easily found in indoor and outdoor. Loudspeakers are usually used to give information to an audience. The sound produced by loudspeaker must be
clear so that it doesn’t cause noise. Sometimes the loudspeaker still makes a sound even though there is no audience. This is a waste of power. To overcome this problem, the solution is to detect the presence of the
audience and direct the sound so that it can reduce its power usage. In this final project, a Smart Amplifier system is created which is a sound guide based on the direction and distance of the audience. The system consisted of AMG8833 thermal camera, Arduino Mega microcontroller 2560, 3 pieces of PGA, 3 pieces of TDA2030 amplifiers, and 3 pieces of
loudspeakers. Thermal cameras are used to detect the direction and distance of the audience. PGA is used to regulate sound reinforcement so that the sound intensity can be adjusted according to the direction and distance of the audience. As a result, the system is be able to direct sound in the room at an angle of -30° to +30° with an average error of 3.33% at 1m of distance, 5.6% at 1.5m of distance, 7.27% at 2m of distance, and 20% at 2.5m of distance. Whereas outdoors has an average error of 7.78% at 1.5m of distance. The system is expected to reduce power usage and reduce the costs incurred due to the use of audio amplifiers.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSE 621.381 535 Bud s-1 2019 |
| Uncontrolled Keywords: | Amplifier, Arduino, PGA, Termal Kamera |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7871.58 Audio amplifiers--Design and construction. |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Harits Surya Budhiarso |
| Date Deposited: | 24 Mar 2023 01:47 |
| Last Modified: | 24 Mar 2023 01:47 |
| URI: | http://repository.its.ac.id/id/eprint/63862 |
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