On the effect of fundamental frequency on amplitude and frequency modulation patterns in speech resonances

Tsiakoulis, P; Potamianos, A

dc.contributor.author	Tsiakoulis, P	en
dc.contributor.author	Potamianos, A	en
dc.date.accessioned	2014-03-01T02:52:43Z
dc.date.available	2014-03-01T02:52:43Z
dc.date.issued	2010	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36019
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-79959853790&partnerID=40&md5=405163bbc6ce3d827ec42b9330d90b8e	en
dc.subject	AM-FM	en
dc.subject	Fundamental frequency	en
dc.subject	Modulation	en
dc.subject	Pitch harmonics	en
dc.subject	Speech analysis	en
dc.subject.other	AM-FM	en
dc.subject.other	Amplitude and frequency modulations	en
dc.subject.other	Formant values	en
dc.subject.other	Fundamental frequencies	en
dc.subject.other	Glottal source	en
dc.subject.other	Modulation patterns	en
dc.subject.other	Non-linear phenomena	en
dc.subject.other	Nonlinear interactions	en
dc.subject.other	Pitch harmonics	en
dc.subject.other	Resonant signal	en
dc.subject.other	Speech production	en
dc.subject.other	Speech signals	en
dc.subject.other	Vocal-tracts	en
dc.subject.other	Amplitude modulation	en
dc.subject.other	Frequency modulation	en
dc.subject.other	Natural frequencies	en
dc.subject.other	Speech communication	en
dc.subject.other	Continuous speech recognition	en
dc.title	On the effect of fundamental frequency on amplitude and frequency modulation patterns in speech resonances	en
heal.type	conferenceItem	en
heal.publicationDate	2010	en
heal.abstract	Amplitude modulation (AM) and frequency modulation (FM) in speech signals are believed to reflect various non-linear phenomena during the speech production process. In this paper, the amplitude and frequency modulation patterns are analyzed for the first three speech resonances in relation to the fundamental frequency (F0). The formant tracks are estimated, and the resonant signals are extracted and demodulated. The Amplitude Modulation Index (AMI) and Frequency Modulation Index (FMI) are computed, and examined in relation to the F0 value, as well as the relation between F0 and the first formant value (F1). Both AMI and FMI are significantly affected by pitch, with modulations being more frequently present in low F0 conditions. Evidence of non-linear interaction between the glottal source and the vocal tract is found in the dependence of the modulation patterns on the ratio of F1 over F0. AMI is amplified when pitch harmonics coincide with F1, while FMI shows complementary behavior. © 2010 ISCA.	en
heal.journalName	Proceedings of the 11th Annual Conference of the International Speech Communication Association, INTERSPEECH 2010	en
dc.identifier.spage	649	en
dc.identifier.epage	652	en