Fly-Ear Inspired Micro-Sensor for Sound Source Localization in Two Dimensions

reportActive / Technical Report | Accession Number: ADA543237 | Open PDF

Abstract:

Inspired by the hearing organ of the fly Ormia ochracea, a miniature sound localization sensor is developed, which can be used to pinpoint a sound source in two dimensions described by the azimuth and elevation angles. The sensor device employs an equilateral triangle configuration consisting of three mechanically coupled circular membranes whose oscillations are detected by a fiber-optic system. The experimental results indicate that significant amplification of the directional cues and directional sensitivity can be achieved with the fly-ear inspired sensor design. This work can provide a basis for the development of miniature sound localization sensors in two dimensions.

Author(s):
Lisiewski, A. P. ; Liu, H. J. ; Yu, M. ; Currano, L. ; Gee, D.
Author Organization(s):
ARMY RESEARCH LAB ADELPHI MD
Descriptive Note:
Journal article
Supplementary Note:
Published in JASA Express Letters, v129 n5 article EL166, May 2011; published online 11 Apr 2011. Prepared in collaboration with Department of Mechanical Engineering, University of Maryland College Park, MD. Sponsored in part by ONR DURIP and DARPA. The original document contains color images.
Pagination:
0007

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
FA9550-08-1-0042
Monitor Series:
AFOSR
 Subject Terms
Joint Capability Areas:
JCA_6_Net Centric; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_6.1.1_Wired Transmission; JCA_1.2.3_Educating; JCA_6.1_Information Transport; JCA_8_Building Partnerships
Modernization Areas:
Microelectronics
Communities of Interest:
Sensors
Descriptor(s):
*DIRECTION FINDING, *TRIANGULATION, *ACOUSTIC SIGNALS, *EAR, BIOMIMETICS, OSCILLATION, MINIATURIZATION, NOISE(SOUND), WINGED INSECTS, ELEVATION, MEMBRANES, TWO DIMENSIONAL, FIBER OPTICS, AZIMUTH
Field(s)/Group(s):
Anatomy and Physiology, Acoustic Detection and Detectors, Acoustics
Keyword(s):
ORMIA OCHRACEA, MECHANICAL COUPLING PRINCIPLE, PHASE DIFFERENCES
Report Date:
2011 May 01
Creation Date:
2011 Jun 15