A siren detection system based on mechanical resonant filters

Fragoulis, DK; Avaritsiotis, JN

dc.contributor.author	Fragoulis, DK	en
dc.contributor.author	Avaritsiotis, JN	en
dc.date.accessioned	2014-03-01T01:16:04Z
dc.date.available	2014-03-01T01:16:04Z
dc.date.issued	2001	en
dc.identifier.issn	14248220	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13902
dc.subject	Acoustic filters	en
dc.subject	Mechanical filters	en
dc.subject	Resonant filters	en
dc.subject	Siren detector	en
dc.title	A siren detection system based on mechanical resonant filters	en
heal.type	journalArticle	en
heal.identifier.primary	10.3390/s10400121	en
heal.identifier.secondary	http://dx.doi.org/10.3390/s10400121	en
heal.publicationDate	2001	en
heal.abstract	A system based on mechanical resonant filters is proposed that can be used for the detection of acoustical signals the frequency components of which vary according to specific periodic patterns. Usually, signals of this category produced by the siren of an emergency vehicle. The device essentially implements a mechanical narrow filter bank that covers the frequency range of a typical siren sound. Signal detection is obtained by measuring the time delay between successive activation of the filters of the bank. The whole analysis reveals how a set of simple, low-cost mechanical resonant filters can replace an electronic analog or digital system for the implementation of a filter bank. Moreover, a scaling down procedure is proposed so that a microsystem may be developed. © 2001 by MDPI.	en
heal.journalName	Sensors	en
dc.identifier.doi	10.3390/s10400121	en
dc.identifier.volume	1	en
dc.identifier.issue	4	en
dc.identifier.spage	121	en
dc.identifier.epage	137	en