Implementation of a sound-source localization method for calling frog in an outdoor environment using a wireless sensor network

2016 ◽  
Author(s):  
Yasuharu Hirano ◽  
Takuya Iwai ◽  
Daichi Kominami ◽  
Ikkyu Aihara ◽  
Masayuki Murata
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Source Localization ◽  
Sound Source ◽  
Outdoor Environment ◽  
Wireless Sensor ◽  
Sound Source Localization ◽  
Localization Method

Design and Assessment of Sound Source Localization System with a UAV-Embedded Microphone Array

2017 ◽  
Vol 29 (1) ◽  
pp. 154-167 ◽  
Author(s):  
Kotaro Hoshiba ◽  
◽  
Osamu Sugiyama ◽  
Akihide Nagamine ◽  
Ryosuke Kojima ◽  
...  
Keyword(s):  
Source Localization ◽  
Sound Source ◽  
Microphone Array ◽  
Outdoor Environment ◽  
Sound Source Localization ◽  
Detection Accuracy ◽  
Localization Method ◽  
Localization System ◽  
Target Sound ◽  
Sound Environment

[abstFig src='/00290001/15.jpg' width='300' text='Visualization of localization result' ] We have studied on robot-audition-based sound source localization using a microphone array embedded on a UAV (unmanned aerial vehicle) to locate people who need assistance in a disaster-stricken area. A localization method with high robustness against noise and a small calculation cost have been proposed to solve a problem specific to the outdoor sound environment. In this paper, the proposed method is extended for practical use, a system based on the method is designed and implemented, and results of sound source localization conducted in the actual outdoor environment are shown. First, a 2.5-dimensional sound source localization method, which is a two-dimensional sound source localization plus distance estimation, is proposed. Then, the offline sound source localization system is structured using the proposed method, and the accuracy of the localization results is evaluated and discussed. As a result, the usability of the proposed extended method and newly developed three-dimensional visualization tool is confirmed, and a change in the detection accuracy for different types or distances of the sound source is found. Next, the sound source localization is conducted in real-time by extending the offline system to online to ensure that the detection performance of the offline system is kept in the online system. Moreover, the relationship between the parameters and detection accuracy is evaluated to localize only a target sound source. As a result, indices to determine an appropriate threshold are obtained and localization of a target sound source is realized at a designated accuracy.

scholarly journals Sound Source Localization in Wide-Range Outdoor Environment Using Distributed Sensor Network

2020 ◽  
Vol 20 (4) ◽  
pp. 2234-2246 ◽  
Author(s):  
Mohammad Mahdi Faraji ◽  
Saeed Bagheri Shouraki ◽  
Ensieh Iranmehr ◽  
Bernabe Linares-Barranco
Keyword(s):  
Sensor Network ◽  
Source Localization ◽  
Sound Source ◽  
Outdoor Environment ◽  
Sound Source Localization ◽  
Distributed Sensor ◽  
Distributed Sensor Network ◽  
Wide Range
Sign in / Sign up

Export Citation Format

Share Document