eprintid: 20301
rev_number: 20
eprint_status: archive
userid: 1903
dir: disk0/00/02/03/01
datestamp: 2014-03-14 07:41:56
lastmod: 2016-04-21 23:03:21
status_changed: 2014-03-14 07:41:56
type: conference_item
metadata_visibility: show
item_issues_count: 0
creators_name: Godino Llorente, Juan Ignacio
creators_name: Gómez García, J.A.
creators_name: Castellanos Dominguez, G.
title: Influence of delay time on regularity estimation for voice pathology detection
ispublished: pub
subjects: desconocida
subjects: robotica
abstract: The employment of nonlinear analysis techniques for automatic voice pathology detection systems has gained
popularity due to the ability of such techniques for dealing
with the underlying nonlinear phenomena. On this respect,
characterization using nonlinear analysis typically employs
the classical Correlation Dimension and the largest Lyapunov
Exponent, as well as some regularity quantifiers computing the system predictability. Mostly, regularity features highly depend on a correct choosing of some parameters. One of those, the delay time �, is usually fixed to be 1. Nonetheless, it has been stated that a unity � can not avoid linear correlation of the time series and hence, may not correctly capture system nonlinearities. Therefore, present work studies the influence of the � parameter on the estimation of regularity features.
Three � estimations are considered: the baseline value 1; a �
based on the Average Automutual Information criterion; and
� chosen from the embedding window. Testing results obtained
for pathological voice suggest that an improved accuracy might be obtained by using a � value different from 1, as it accounts for the underlying nonlinearities of the voice signal.
date: 2012
date_type: published
publisher: IEEE
full_text_status: public
pres_type: paper
pages: 4
event_title: 34th Annual International Conference of the IEEE EMBS San Diego, California USA, 28 August - 1 September, 2012
event_location: San Diego (California)
event_dates: 28/08/2012 al 1/09/2012
event_type: conference
institution: E_Telecomunicacion
department: Ingenieria_Circuitos
refereed: TRUE
isbn: 978-1-4577-1787-1
book_title: 34th Annual International Conference of the IEEE EMBS San Diego, California USA, 28 August - 1 September, 2012
rights: by-nc-nd
citation:   Godino Llorente, Juan Ignacio and Gómez García, J.A. and Castellanos Dominguez, G.  (2012).  Influence of delay time on regularity estimation for voice pathology detection.  In: "34th Annual International Conference of the IEEE EMBS San Diego, California USA, 28 August - 1 September, 2012", 28/08/2012 al 1/09/2012, San Diego (California). ISBN 978-1-4577-1787-1.    
document_url: https://oa.upm.es/20301/1/INVE_MEM_2012_133831.pdf