Use of unidirectional microphones and signal processing for the localization of sound sources

Piervincenzo Rizzo; Giacomo Bordoni; Alessandro Marzani

doi:10.1117/12.819271

11 May 2009 Use of unidirectional microphones and signal processing for the localization of sound sources

Piervincenzo Rizzo, Giacomo Bordoni, Alessandro Marzani

Proceedings Volume 7336, Signal Processing, Sensor Fusion, and Target Recognition XVIII; 73361F (2009) https://doi.org/10.1117/12.819271
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

Targeting people or objects by passive acoustic sensors is of relevant interest in several military and civil applications, spanning from surveillance and patrolling systems to teleconferencing and human-robot interaction. To date methods and patents focused solely on the use of beamforming algorithms to compute the time of arrival of sounds detected by using omnidirectional microphones (OM) sparsely deployed. This paper describes the preliminary results of a novel approach devoted to the localization of ground borne acoustic sources. It is demonstrated that an array made of at least three unidirectional microphones can be exploited to detect the position the source. Pulse features extracted either in the time domain or in the frequency domain are used to identify the direction of the incoming sound. This information is then fed into a semi-analytical algorithm devoted to the identification of the source location. The novelty of the method presented here consists on the use of unidirectional microphones rather than omnidirectional microphones and on the ability to extract the sound direction by considering features like the pulse amplitude rather than the pulse arrival time. It is believed that this method may pave the road toward a new generation of reduced size sound detectors and localizers.

Citation Download Citation

Piervincenzo Rizzo, Giacomo Bordoni, and Alessandro Marzani "Use of unidirectional microphones and signal processing for the localization of sound sources", Proc. SPIE 7336, Signal Processing, Sensor Fusion, and Target Recognition XVIII, 73361F (11 May 2009); https://doi.org/10.1117/12.819271

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Acoustics

Plasma display panels

Sensors

Signal processing

Feature extraction

Roads

Signal detection

Show All Keywords

Keywords/Phrases

Search In:

Publication Years