Asfari, Mohamad (2017) Penentuan Arah Sumber Suara Dengan Metode Interaural Time Difference Menggunakan Mikrokontroler Stm32f4. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sistem pendengaran manusia dapat mengestimasi lokasi sumber suara dari pengamatan sinyal suara binaural dengan akurasi yang cukup tinggi. Manusia dapat mengenali lokasi suara secara 3 dimensi dan bahkan dapat mengenali keberadaan sumber suara pada posisi belakang dimana tidak terdapat informasi visual. Sudah banyak dilakukan penelitian mengenai pengenalan lokasi sumber suara menggunakan beberapa array mikrofon yang memakai lebih dari 3 buah mikrofon, akan tetapi penelitian sistem pengenalan lokasi sumber suara yang menggunakan 2 buah mikrofon seperti pendengaran manusia masih jarang dilakukan.
Para penelitian ini merancang suatu sistem pendeteksi sumber suara dengan menggunakan 2 buah mikrofon dan mikrokontroler STM32F4 sebagai prosesor utama. Metode Interaural Time Difference digunakan untuk menentukan arah dengan cara membandingkan perbedaan waktu sampai sebuah suara yang dipancarkan oleh sumber suara.
Berdasarkan hasil pengujian, sistem ini dapat menentukan arah sumber suara dari nilai antara 00 dan 180o dengan jarak sumber suara di bawah 40 cm dan intensitas suara sebesar 73 dB. Tingkat kesalahan pada penentuan arah tersebut adalah sebesar 38,31%. Diharapkan alat ini dapat diaplikasikan dalam sistem pengusir hama burung untuk menentukan arah suara pengusir.
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Human audition system
is capable of estimating the location of
sound source from observed binaural audio s
ignals with moderate
accuracy
. This hearing ability is referred to as the sound source
localization. Humans can perform sound localization in three
dimensional space and c
an even recognize the existence of sound source
behind their back where no visual information is available.
Numerous
works have been done to implement audio perception capability to robots,
mainly on systems which use multiple microphone array containing m
ore
than
three
microphones. Developments of robotic audition systems which
uses only two microphones like humans do, however, are less active as
comp
ared to array signal processing.
This research has developed a sound source localization system
using 2 microphones and microcontroller STM32F4 as main processor
unit. The Interaural Time Difference method is used to locate the sound
source by comparing the difference in the arrival time
between each
microphones from the sound
source
.
Based on the testing result, the sound localization can operate
at 0
o
to 180
o
range with the
sound source at below 40 cm distance
and the
sound intensity at above 73 dB. This system has an average of error a
t
31,87%.
This system is expected to be able to be implemented in the bird’s
pest repellent system to determine the repellent’s direction
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Arah Sumber Suara, Interaural Time Difference, STM32F4 |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5105 Data Transmission Systems |
| Divisions: | Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Mohamad Asfari |
| Date Deposited: | 04 Dec 2017 02:32 |
| Last Modified: | 06 Mar 2019 06:35 |
| URI: | http://repository.its.ac.id/id/eprint/46230 |
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